CHANGELOG

3.14.0

ENHANCEMENTS

Include drivers for P6e-GB200 and P6-B200 instances. ParallelCluster sets up Slurm topology plugin to handle P6e-GB200 UltraServers. See limitations section for important additional setup requirements.
Support prioritized and capacity-optimized-prioritized Allocation Strategy. This allows users to prioritize subnets for instance placement to optimize costs and performance.
Add build-image support for Amazon Linux 2023 AMIs based on kernel 6.12 (in addition to 6.1).
Support DCV on Amazon Linux 2023.
Echo chef-client logs in the instance console when a node fails to bootstrap. This helps with investigating bootstrap failures in cases CloudWatch logs are not available.

LIMITATIONS

P6e-GB200 instances are only tested on Amazon Linux 2023, Ubuntu 22.04 and Ubuntu 24.04.
Using IMEX on P6e-GB200 requires additional setup. Please refer to the dedicated tutorial in our public documentation.
P6-B200 instances are only tested on Amazon Linux 2023, RHEL 8 & 9, Rocky 8 & 9, Ubuntu 22.04 and Ubuntu 24.04.

CHANGES

Install nvidia-imex for all OSs except Amazon Linux 2.
Remove UnkillableStepTimeout from slurm.conf and let slurm set this value.
Upgrade Python runtime used by Lambda functions to Python 3.12 (from 3.9). See Lambda Documentation for important information about Python 3.9 EOL: https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html
Support encryption of EFS file system used for the head node internal shared storage via a new configuration parameter HeadNode/SharedStorageEfsSettings/Encrypted
Add validator that warns against using non GPU instances with DCV.
Upgrade Slurm to version 24.11.6 (from 24.05.8).
Upgrade EFA installer to 1.43.2 (from 1.41.0).
- Efa-driver: efa-2.17.2-1
- Efa-config: efa-config-1.18-1
- Efa-profile: efa-profile-1.7-1
- Libfabric-aws: libfabric-aws-2.1.0-5
- Rdma-core: rdma-core-58.0-1
- Open MPI: openmpi40-aws-4.1.7-2 and openmpi50-aws-5.0.6-11
Upgrade Cinc Client to version 18.4.12 (from 18.2.7).
Upgrade NVIDIA driver to version 570.172.08 (from 570.86.15) for all OSs except Amazon Linux 2.
Upgrade CUDA Toolkit to version 12.8.1 (from 12.8.0) for all OSs except Amazon Linux 2.
Upgrade DCGM to version 4.4.1 (from 3.3.6) for all OSs except Amazon Linux 2.
Upgrade Python to 3.12.11 (from 3.12.8) for all OSs except Amazon Linux 2.
Upgrade Python to 3.9.23 (from 3.9.20) for Amazon Linux 2.
Upgrade Intel MPI Library to 2021.16.0 (from 2021.13.1).
Upgrade DCV to version 2024.0-19030.
Upgrade the official ParallelCluster Amazon Linux 2023 AMIs to kernel 6.12 (from 6.1).

BUG FIXES

Prevent build-image stack deletion failures by deploying a global role that automatically deletes the build-image stack after images either succeed or fail the build. The role is meant to exist even after the stack has been deleted. See #5914.
Fix an issue where Security Group validation failed when a rule contained both IPv4 ranges (IpRanges) and security group references (UserIdGroupPairs).
Fix build-image failure on Rocky 9, occurring when the parent image does not ship the latest kernel version on the latest Rocky minor version.
Fix cluster id mismatch issue which causes cluster update failures when slurm accounting is used.
Fix a race condition in CloudWatch Agent startup that could cause node bootstrap failures.

DEPRECATIONS

The configuration parameter LoginNodes/Pools/Ssh/KeyName has been deprecated, and it will be removed in future releases. The CLI now returns a warning message when it is used in the cluster configuration. See #6811.
Ubuntu 20.04 is no longer supported.

3.13.2

BUG FIXES

Fix a bug which may cause update-cluster and update-compute-fleet to fail when compute resources reference an expired Capacity Reservation that is no longer accessible via EC2 APIs.
Fix build-image failure on Rocky 9, occurring when the parent image does not ship the latest kernel version. See #6874.

3.13.1

CHANGES

Upgrade Slurm to version 24.05.8.
Upgrade EFA installer to 1.41.0 (from 1.38.1).
- Efa-driver: efa-2.15.0-1
- Efa-config: efa-config-1.18-1
- Efa-profile: efa-profile-1.7-1
- Libfabric-aws: libfabric-aws-2.1.0-1
- Rdma-core: rdma-core-57.0-1
- Open MPI: openmpi40-aws-4.1.7-2 and openmpi50-aws-5.0.6
Upgrade amazon-efs-utils to version 2.3.1 (from v2.1.0) for non-Amazon Linux AMI's.
Support DCV in us-isob-east-1 and us-iso-east-1.
Support FSX for Lustre and Ontap in us-isob-east-1 and us-iso-east-1.

BUG FIXES

Fix a bug in the installation of ARM Performance Library that was causing the build image fail in isolated environments.
Fix a bug that was preventing the script 'update_directory_service_password.sh' from updating the AD password.

3.13.0

DEPRECATIONS

This is the last ParallelCluster release supporting Ubuntu 20.04
as Ubuntu 20.04 will be in End-Of-Standard-Support on May 2025.

ENHANCEMENTS

Add support for Ubuntu 24.04.
Add support for ap-southeast-7 region.
Add support for ap-southeast-5 region.
Disable unused services cups and wpa_supplicant from Official ParallelCluster AMIs to improve security.

CHANGES

Increase HeadNodeBootstrapTimeout by 5 minutes, making it 35 minutes in total.
Upgrade Slurm to version 24.05.7.
Upgrade NVIDIA driver to version 570.86.15 (from 550.127.08) for all OSs except AL2.
Upgrade CUDA Toolkit to version 12.8.0 (from 12.4.1) for all OSs except AL2.
Upgrade Python to 3.12.8 for all OSs except AL2 (from 3.9.20).
On Ubuntu 22.04, install the Nvidia driver with the same compiler version used to compile the kernel.
Upgrade aws-cfn-bootstrap to version 2.0-33.
Upgrade EFA installer to 1.38.0 (from 1.36.0).
- Efa-driver: efa-2.13.0-1
- Efa-config: efa-config-1.17-1
- Efa-profile: efa-profile-1.7-1
- Libfabric-aws: libfabric-aws-1.22.0-1
- Rdma-core: rdma-core-54.0-1
- Open MPI: openmpi40-aws-4.1.7-1 and openmpi50-aws-5.0.5
Upgrade amazon-efs-utils to version 2.1.0.
Remove third-party cookbook: apt-7.5.22 and pyenv-4.2.3.
Upgrade third-party cookbook dependencies:
- line-4.5.21 (from line-4.5.13)
- nfs-5.1.5 (from nfs-5.1.2)
- openssh-2.11.14 (from openssh-2.11.12)
- yum-7.4.20 (from yum-7.4.13)
- yum-epel-5.0.8 (from yum-epel-5.0.2)
Upgrade Pmix to 5.0.6 (from 5.0.3).
Upgrade ARM PL to version 24.10 (from 23.10).
Upgrade Python to version 3.12.8 (from 3.9.17) in Lambda layer and installer.
Upgrade NodeJS to version 20.18.3 (from 18.20.3) in Lambda layer and installer.
Remove generation of DSA keys for login nodes as DSA, which became unsupported in OpenSSH 9.7+.
Set instance ID and instance type information in Slurm upon compute nodes launch.
Install NVIDIA drivers without the option 'no-cc-version-check', which is now deprecated in the NVIDIA installer.
Add validator to enforce up to 10- login node pools.
Update the default root volume size to 45 GB.

BUG FIXES

Remove usage of cfn-init for compute node bootstrapping to reduce node scale up time.
Fix an issue causing compute node bootstrap failure when a proxy is used.
On Ubuntu 22.04, install the Nvidia driver with the same compiler version used to compile the kernel to prevent inmstallation failures.- Fix the execution of overriding aws-parallelcluster-node package only on the head node during update.
Fix an issue where containerized jobs executed through Pyxis/Enroot in a multi-user environment (integrated with Active Directory) would fail.
Fix usage of authselect causing node bootstrap failures on Rocky 9.5+ when directory service is used.

3.12.0

ENHANCEMENTS

Add new build image configuration section Build/Installation to turn on/off Nvidia software and Lustre client installations. By default, Nvidia software, although included in official ParallelCluster AMIs, is not installed by build-image. By default, Lustre client is installed.
The CLI commands export-cluster-logs and export-image-logs can now by default export the logs to the default ParallelCluster bucket or to the CustomS3Bucket if specified in the config.
Extend Amazon DCV support to Ubuntu2204 on ARM instances.
Add new parameter 'ParallelClusterFunctionAdditionalPolicies' to the ParallelCluster API stack to add custom permissions for the API Lambda role, on top of the default ones.

CHANGES

Upgrade NVIDIA driver to version 550.127.08 (from 550.90.07). This addresses a known issue from Nivdia.
Upgrade Amazon DCV to version 2024.0-18131.
- server: 2024.0-18131-1
- xdcv: 2024.0.631-1
- gl: 2024.0.1078-1
- web_viewer: 2024.0-18131-1
Upgrade EFA installer to 1.36.0.
- Efa-driver: efa-2.13.0-1
- Efa-config: efa-config-1.17-1
- Efa-profile: efa-profile-1.7-1
- Libfabric-aws: libfabric-aws-1.22.0-1
- Rdma-core: rdma-core-54.0-1
- Open MPI: openmpi40-aws-4.1.7-1 and openmpi50-aws-5.0.5
Auto-restart slurmctld on failure.
Upgrade mysql-community-client to version 8.0.39.
Remove support for Python 3.7 and 3.8, which are in end of life.

BUG FIXES

Fix an issue where changes in sequence of custom actions scripts were not detected during cluster updates.
Add missing permissions for ParallelCluster API to create the service linked roles for Elastic Load Balancing and Auto Scaling, that are required to deploy login nodes.
Fix retrieval of regions when managing volumes to correctly handle local zones.
Fix an issue where adding EFS filesystems with AccessPointIds during an update would fail.
Fix an issue where when using PCAPI, cluster update could fail when updating a parameter that is not type String (e.g. MaxCount).
When mounting an external OpenZFS, it is no longer required to set the outbound rules for ports 111, 2049, 20001, 20002, 20003.

3.11.1

CHANGES

Pyxis is now disabled by default, so it must be manually enabled as documented in the product documentation.
Upgrade Python runtime to version 3.12 in ParallelCluster Lambda Layer.
Remove version pinning for setuptools to version prior to 70.0.0.
Upgrade libjwt to version 1.17.0.

BUG FIXES

Fix an issue in the way we configure the Pyxis Slurm plugin in ParallelCluster that can lead to job submission failures. #6459
Fix an issue that was causing failing deployment in configurations with login nodes by add missing permissions required by login nodes in the public template of policies. #6483

3.11.0

ENHANCEMENTS

Add support for custom actions on login nodes.
Allow DCV connection to login nodes.
Add support for ap-southeast-3 region.
Add security groups to login node network load balancer.
Add AllowedIps configuration for login nodes.
Add new configuration SharedStorage/EfsSettings/AccessPointId to specify an optional EFS access point for a mount
Allow up to 10 login node pools.
Install enroot and pyxis in official pcluster AMIs

CHANGES

[BREAKING] The loginNodes field returned by the API DescribeCluster and the CLI command describe-cluster has been changed from a dictionary to an array to support multiple pools of login nodes. This change breaks backward compatibility, making these operations incompatible with clusters deployed with older versions.
Upgrade Slurm to 23.11.10 (from 23.11.7).
Upgrade Pmix to 5.0.3 (from 5.0.2).
Upgrade EFA installer to 1.34.0.
- Efa-driver: efa-2.10.0-1
- Efa-config: efa-config-1.17-1
- Efa-profile: efa-profile-1.7-1
- Libfabric-aws: libfabric-aws-1.22.0-1
- Rdma-core: rdma-core-52.0-1
- Open MPI: openmpi40-aws-4.1.6-3 and openmpi50-aws-5.0.3-11
Upgrade NVIDIA driver to version 550.90.07 (from 535.183.01).
Upgrade CUDA Toolkit to version 12.4.1 (from 12.2.2).
Upgrade Python to 3.9.20 (from 3.9.19).
Upgrade Intel MPI Library to 2021.13.1.769 (from 2021.12.1.8).

BUG FIXES

Fix validator EfaPlacementGroupValidator so that it does not suggest to configure a Placement Group when Capacity Blocks are used.
Fix sporadic cluster creation failures with managed FSx for Lustre.
Fix cluster deletion failure when placement group is enabled.
Fix issue with login nodes being marked unhealthy when restricting SSH access.
Fix retrieve_supported_regions so that it can get the correct S3 url.
Fix describe_images so that it uses pagination.
Fix No route tables found bug when specifying default VPC subnet to LoginNodes/Networking/SubnetIds.

3.10.1

BUG FIXES

Fix image build failure in China regions.

3.10.0

ENHANCEMENTS

Add new configuration section Scheduling/SlurmSettings/ExternalSlurmdbd to connect the cluster to an external Slurmdbd.
Allow build-image to be run in an isolated network.
Add support for Amazon Linux 2023.
Add support for price-capacity-optimized as an AllocationStrategy.
Add validator to prevent the use of Placement Groups with Capacity Blocks.

CHANGES

CentOS 7 is no longer supported.
Upgrade Cinc Client to version to 18.4.12 from 18.2.7.
Upgrade munge to version 0.5.16 (from 0.5.15).
Upgrade Pmix to 5.0.2 (from 4.2.9).
Upgrade third-party cookbook dependencies:
- apt-7.5.22 (from apt-7.5.14)
- openssh-2.11.12 (from openssh-2.11.3)
Remove third-party cookbook: selinux-6.1.12.
Upgrade EFA installer to 1.32.0.
- Efa-driver: efa-2.8.0-1
- Efa-config: efa-config-1.16-1
- Efa-profile: efa-profile-1.7-1
- Libfabric-aws: libfabric-aws-1.21.0-1
- Rdma-core: rdma-core-50.0-1
- Open MPI: openmpi40-aws-4.1.6-3 and openmpi50-aws-5.0.2-12
Upgrade NVIDIA driver to version 535.183.01 (from 535.154.05).
Upgrade Python to 3.9.19 (from 3.9.17).
Upgrade Intel MPI Library to 2021.12.1.8 (from 2021.9.0.43482).

BUG FIXES

Fix Data Repository Associations configuration to make AutoExportPolicy and AutoImportPolicy optional.
Fixed an issue during cluster deletion that now completes compute fleet cleanup when instances are either in shutting-down or terminated state. This is to avoid cluster deletion failures for instance types with longer termination cycles.
Allow cloudwatch dashboard to be enabled and alarms to be disabled in the Monitoring section of the cluster config.
Allow ParallelCluster Custom Resource to suppress validators using PclusterCluster/SuppressValidators.
Removing /etc/profile.d/pcluster.sh so that it's not executed at every user login and cfn_bootstrap_virtualenv is not added in PATH environment variable.
Fix ParallelCluster API spec by replacing field failureReason with failures in DescribeCluster response.
Fix ParallelCluster API spec by adding the CloudFormation stack status that were missing: IMPORT_*, REVIEW_IN_PROGRESS and UPDATE_FAILED.
Fix an issue that prevented cluster updates from including EFS filesystems with encryption in transit.
Fix an issue that prevented slurmctld and slurmdbd services from restarting on head node reboot when EFS is used for shared internal data.
On Ubuntu systems, remove default logrotate configuration for cloud-init log files that clashed with the configuration coming from Parallelcluster.
Fix image build failure with RHEL 8.10 or newer.

3.9.3

ENHANCEMENTS

Add support for FSx Lustre as a shared storage type in us-iso-east-1.

BUG FIXES

Remove cloud_dns from the SlurmctldParameters in the Slurm config to avoid Slurm fanout issues. This is also not required since we set the IP addresses on instance launch.

3.9.2

CHANGES

Upgrade Slurm to 23.11.7 (from 23.11.4).

BUG FIXES

Fix issue with SharedStorageType: Efs not bootstrapping on ARM instances.

3.9.1

BUG FIXES

Remove recursive deletion of shared storage mountdir when unmounting filesystems as part of update-cluster operation.

3.9.0

ENHANCEMENTS

Permit to update the external shared storage of type Efs, FsxLustre, FsxOntap, FsxOpenZfs and FileCache without replacing compute and login fleet.
Permit to update MinCount, MaxCount, Queue and ComputeResource configuration parameters without the need to stop the compute fleet. It's now possible to update them by setting Scheduling/SlurmSettings/QueueUpdateStrategy to TERMINATE. ParallelCluster will terminate only the nodes removed during a resize of the cluster capacity performed through a cluster update.
Add support for RHEL9.
Add support for Rocky Linux 9 as CustomAmi created through build-image process. No public official ParallelCluster Rocky9 Linux AMI is made available at this time.
Remove CommunicationParameters from the Custom Slurm Settings deny list.
Add the configuration parameter DeploymentSettings/DefaultUserHome to allow users to move the default user's home directory to /local/home instead of /home (default).
Add configuration parameter DeploymentSettings/DisableSudoAccessForDefaultUser to disable sudo access of default user in supported OSes.

CHANGES

Upgrade Slurm to 23.11.4 (from 23.02.7).
- Upgrade Pmix to 4.2.9 (from 4.2.6).
Add support for Python 3.11, 3.12 in pcluster CLI and aws-parallelcluster-batch-cli.
Build network interfaces using network card index from NetworkCardIndex list of EC2 DescribeInstances response, instead of looping over MaximumNetworkCards range.
Fail cluster creation when using instance types P3, G3, P2 and G2 because their GPU architecture is not compatible with Open Source Nvidia Drivers (OpenRM) introduced as part of 3.8.0 release.
Upgrade the default FSx Lustre server version managed by ParallelCluster to 2.15.
Upgrade NVIDIA driver to version 535.154.05.
Upgrade EFA installer to 1.30.0.
- Efa-driver: efa-2.6.0-1
- Efa-config: efa-config-1.15-1
- Efa-profile: efa-profile-1.6-1
- Libfabric-aws: libfabric-aws-1.19.0
- Rdma-core: rdma-core-46.0-1
- Open MPI: openmpi40-aws-4.1.6-2 and openmpi50-aws-5.0.0-11
Upgrade NICE DCV to version 2023.1-16388.
- server: 2023.1.16388-1
- xdcv: 2023.1.565-1
- gl: 2023.1.1047-1
- web_viewer: 2023.1.16388-1
Upgrade ARM PL to version 23.10.
Upgrade third-party cookbook dependencies:
- nfs-5.1.2 (from nfs-5.0.0)

BUG FIXES

Refactor IAM policies defined in CloudFormation template parallelclutser-policies.yaml to prevent ParallelCluster API deployment failure caused by policies exceeding IAM limits.

3.8.0

ENHANCEMENTS

Add support for EC2 Capacity Blocks for ML.
Add support for Rocky Linux 8 as CustomAmi created through build-image process. No public official ParallelCluster Rocky8 Linux AMI is made available at this time.
Add Scheduling/ScalingStrategy parameter to control the cluster scaling strategy to use when launching EC2 instances for Slurm compute nodes. Possible values are all-or-nothing, greedy-all-or-nothing, best-effort, with all-or-nothing being the default.
Add HeadNode/SharedStorageType parameter to use EFS storage instead of NFS exports from the head node root volume for intra-cluster shared file system resources: ParallelCluster, Intel, Slurm, and /home data. This enhancement reduces the load on the head node networking.
Allow for mounting home as an EFS or FSx external shared storage via the SharedStorage section of the config file.
Add new parameter SlurmSettings/MungeKeySecretArn to permit to use an external user-defined MUNGE key from AWS Secrets Manager.
Add Monitoring/Alarms/Enabled parameter to toggle Amazon CloudWatch Alarms for the cluster.
Add head node alarms to monitor EC2 health checks, CPU utilization and the overall status of the head node, and add them to the CloudWatch Dashboard created with the cluster.
Add support for Data Repository Associations when using PERSISTENT_2 as DeploymentType for a managed FSx for Lustre.
Add Scheduling/SlurmSettings/Database/DatabaseName parameter to allow users to specify a custom name for the database on the database server to be used for Slurm accounting.
Make InstanceType an optional configuration parameter when configuring CapacityReservationTarget/CapacityReservationId in the compute resource.
Add possibility to specify a prefix for IAM roles and policies created by ParallelCluster API.
Add possibility to specify a permissions boundary to be applied for IAM roles and policies created by ParallelCluster API.
Add support for il-central-1 region.

CHANGES

Upgrade Slurm to 23.02.7 (from 23.02.6).
Upgrade NVIDIA driver to version 535.129.03.
Upgrade CUDA Toolkit to version 12.2.2.
Use Open Source NVIDIA GPU drivers (OpenRM) as NVIDIA kernel module for Linux instead of NVIDIA closed source module.
- This change removes support for P3, G3, P2 and G2 instances with GPU architecture not supported by OpenRM. The Open Source Nvidia only works on platforms that have the GSP (GPU System Processor).
Remove support of all_or_nothing_batch configuration parameter in the Slurm resume program, in favor of the new Scheduling/ScalingStrategy cluster configuration.
Changed cluster alarms naming convention to '[cluster-name]-[component-name]-[metric]'.
Change default EBS volume types in ADC regions from gp2 to gp3, for both the root and additional volumes.
The optional permissions boundary for the ParallelCluster API is now applied to every IAM role created by the API infrastructure.
Upgrade EFA installer to 1.29.1.
- Efa-driver: efa-2.6.0-1
- Efa-config: efa-config-1.15-1
- Efa-profile: efa-profile-1.5-1
- Libfabric-aws: libfabric-aws-1.19.0-1
- Rdma-core: rdma-core-46.0-1
- Open MPI: openmpi40-aws-4.1.6-1
Upgrade GDRCopy to version 2.4 in all supported OSes, except for Centos 7 where version 2.3.1 is used.
Upgrade aws-cfn-bootstrap to version 2.0-28.
Add support for Python 3.10 in aws-parallelcluster-batch-cli.

BUG FIXES

Fix inconsistent scaling configuration after cluster update rollback when modifying the list of instance types declared in the Compute Resources.
Fix users SSH keys generation when switching users without root privilege in clusters integrated with an external LDAP server through cluster configuration files.
Fix disabling Slurm power save mode when setting ScaledownIdletime = -1.
Fix hard-coded path to Slurm installation dir in update_slurm_database_password.sh script for Slurm Accounting.

3.7.2

CHANGES

Upgrade Slurm to 23.02.6.

3.7.1

CHANGES

Upgrade Slurm to 23.02.5 (from 23.02.4).
- Upgrade Pmix to 4.2.6 (from 3.2.3).
- Upgrade libjwt to 1.15.3 (from 1.12.0).
Upgrade EFA installer to 1.26.1, fixing RDMA writedata issue in P5.
- Efa-driver: efa-2.5.0-1
- Efa-config: efa-config-1.15-1
- Efa-profile: efa-profile-1.5-1
- Libfabric-aws: libfabric-aws-1.18.2-1
- Rdma-core: rdma-core-46.0-1
- Open MPI: openmpi40-aws-4.1.5-4

3.7.0

ENHANCEMENTS

Allow configuration of static and dynamic node priorities in Slurm compute resources via the ParallelCluster configuration YAML file.
Add support for Ubuntu 22.
Allow memory-based scheduling when multiple instance types are specified for a Slurm Compute Resource.
Add a queue-level parameter (JobExclusiveAllocation) to ensure nodes in the partition are exclusively allocated to a single job at any given time.
Add support for login nodes.
Add support to mount existing Amazon File Cache as shared storage.

CHANGES

Assign Slurm dynamic nodes a priority (weight) of 1000 by default. This allows Slurm to prioritize idle static nodes over idle dynamic ones.
Make aws-parallelcluster-node daemons handle only ParallelCluster-managed Slurm partitions.
Increase EFS-utils watchdog poll interval to 10 seconds. Note: This change is meaningful only if EncryptionInTransit is set to true, because the watchdog does not run otherwise.
Upgrade EFA installer to 1.25.1
- Efa-driver: efa-2.5.0-1
- Efa-config: efa-config-1.15-1
- Efa-profile: efa-profile-1.5-1
- Libfabric-aws: libfabric-aws-1.18.1-1
- Rdma-core: rdma-core-46.0-1
- Open MPI: openmpi40-aws-4.1.5-4
Change the default value of Imds/ImdsSupport from v1.0 to v2.0.
Upgrade Slurm to version 23.02.4.
Deprecate Ubuntu 18.
Update the default root volume size to 40 GB to account for limits on Centos 7.
Restrict permission on file /tmp/wait_condition_handle.txt within the head node so that only root can read it.
Upgrade NVIDIA driver to version 535.54.03.
Upgrade CUDA library to version 12.2.0.
Upgrade NVIDIA Fabric manager to nvidia-fabricmanager-535

BUG FIXES

Add validation to ScaledownIdletime value, to prevent setting a value lower than -1.
Fix issue causing dangling IAM policies to be created when creating ParallelCluster CloudFormation custom resource provider with CustomLambdaRole.
Fix an issue that was causing misalignment of compute nodes DNS name on instances with multiple network interfaces, when using SlurmSettings/Dns/UseEc2Hostnames equals to True.

3.6.1

ENHANCEMENTS

Add support for Slurm accounting in US isolated regions.

CHANGES

Avoid duplication of nodes seen by clustermgtd if compute nodes are added to multiple Slurm partitions.
ParallelCluster AMI for US isolated regions are now vended with preconfigured CA certificates to speed up node bootstrap.
Replace nvidia-persistenced service with parallelcluster_nvidia service to avoid conflicts with DLAMI.

BUG FIXES

Remove hardcoding of root volume device name (/dev/sda1 and /dev/xvda) and retrieve it from the AMI(s) used during create-cluster.
Fix cluster creation failure when using CloudFormation custom resource with ElasticIp set to True.
Fix cluster creation/update failure when using CloudFormation custom resource with large configuration files.
Fix an issue that was preventing ptrace protection from being disabled on Ubuntu and was not allowing Cross Memory Attach (CMA) in libfabric.
Fix fast insufficient capacity fail-over logic when using multiple instance types and no instances are returned.

3.6.0

ENHANCEMENTS

Add support for RHEL8.7.
Add a CloudFormation custom resource for creating and managing clusters from CloudFormation.
Add support for customizing the cluster Slurm configuration via the ParallelCluster configuration YAML file.
Build Slurm with support for LUA.
Increase the limit on the maximum number of queues per cluster from 10 to 50. Compute resources can be distributed flexibly across the various queues as long as the cluster contains a maximum of 50 compute resources.
Allow to specify a sequence of multiple custom actions scripts per event for OnNodeStart, OnNodeConfigured and OnNodeUpdated parameters.
Add new configuration section HealthChecks/Gpu for enabling the GPU Health Check in the compute node before job execution.
Add support for Tags in the SlurmQueues and SlurmQueues/ComputeResources section.
Add support for DetailedMonitoring in the Monitoring section.
Add mem_used_percent and disk_used_percent metrics for head node memory and root volume disk utilization tracking on the ParallelCluster CloudWatch dashboard, and set up alarms for monitoring these metrics.
Add log rotation support for ParallelCluster managed logs.
Track common errors of compute nodes and longest dynamic node idle time on Cloudwatch Dashboard.
Enforce the DCV Authenticator Server to use at least TLS-1.2 protocol when creating the SSL Socket.
Install NVIDIA Data Center GPU Manager (DCGM) package on all supported OSes except for aarch64 centos7 and alinux2.
Load kernel module nvidia-uvm by default to provide Unified Virtual Memory (UVM) functionality to the CUDA driver.
Install NVIDIA Persistence Daemon as a system service.

CHANGES

Note 3.6 will be the last release to include support for Ubuntu 18. Subsequent releases will only support Ubuntu from version 20.
Upgrade Slurm to version 23.02.2.
Upgrade munge to version 0.5.15.
Set Slurm default TreeWidth to 30.
Set Slurm prolog and epilog configurations to target a directory, /opt/slurm/etc/scripts/prolog.d/ and /opt/slurm/etc/scripts/epilog.d/ respectively.
Set Slurm BatchStartTimeout to 3 minutes so to allow max 3 minutes Prolog execution during compute node registration.
Increase the default RetentionInDays of CloudWatch logs from 14 to 180 days.
Upgrade EFA installer to 1.22.1
- Dkms : 2.8.3-2
- Efa-driver: efa-2.1.1g
- Efa-config: efa-config-1.13-1
- Efa-profile: efa-profile-1.5-1
- Libfabric-aws: libfabric-aws-1.17.1-1
- Rdma-core: rdma-core-43.0-1
- Open MPI: openmpi40-aws-4.1.5-1
Upgrade Lustre client version to 2.12 on Amazon Linux 2 (same version available on Ubuntu 20.04, 18.04 and CentOS >= 7.7).
Upgrade Lustre client version to 2.10.8 on CentOS 7.6.
Upgrade NVIDIA driver to version 470.182.03.
Upgrade NVIDIA Fabric Manager to version 470.182.03.
Upgrade NVIDIA CUDA Toolkit to version 11.8.0.
Upgrade NVIDIA CUDA sample to version 11.8.0.
Upgrade Intel MPI Library to 2021.9.0.43482.
Upgrade NICE DCV to version 2023.0-15022.
- server: 2023.0.15022-1
- xdcv: 2023.0.547-1
- gl: 2023.0.1027-1
- web_viewer: 2023.0.15022-1
Upgrade aws-cfn-bootstrap to version 2.0-24.
Upgrade image used by CodeBuild environment when building container images for AWS Batch clusters, from aws/codebuild/amazonlinux2-x86_64-standard:3.0 to aws/codebuild/amazonlinux2-x86_64-standard:4.0 and from aws/codebuild/amazonlinux2-aarch64-standard:1.0 to aws/codebuild/amazonlinux2-aarch64-standard:2.0.
Avoid to reset FSx and EFS shared folders permissions when mounting them in the compute nodes.

BUG FIXES

Fix EFS, FSx network security groups validators to avoid reporting false errors.
Fix missing tagging of resources created by ImageBuilder during the build-image operation.
Fix Update policy for MaxCount to always perform numerical comparisons on MaxCount property.
Fix an issue that was causing misalignment of compute nodes IP on instances with multiple network interfaces.
Fix replacement of StoragePass in slurm_parallelcluster_slurmdbd.conf when a queue parameter update is performed and the Slurm accounting configurations are not updated.
Fix issue causing cfn-hup daemon to fail when it gets restarted.
Fix issue causing dangling security groups to be created when creating a cluster with an existing EFS.
Fix issue causing NVIDIA GPU compute nodes not to resume correctly after executing an scontrol reboot command.
Fix tags parsing to show a meaningful error message when using a boolean in the Value field of Tags.

3.5.1

ENHANCEMENTS

Add a new way to distribute ParallelCluster as a self-contained executable shipped with a dedicated installer.
Add support for US isolated region us-isob-east-1.

CHANGES

Upgrade EFA installer to 1.22.0
- Efa-driver: efa-2.1.1g
- Efa-config: efa-config-1.13-1
- Efa-profile: efa-profile-1.5-1
- Libfabric-aws: libfabric-aws-1.17.0-1
- Rdma-core: rdma-core-43.0-1
- Open MPI: openmpi40-aws-4.1.5-1
Upgrade NICE DCV to version 2022.2-14521.
- server: 2022.2.14521-1
- xdcv: 2022.2.519-1
- gl: 2022.2.1012-1
- web_viewer: 2022.2.14521-1

BUG FIXES

Fix update cluster to remove shared EBS volumes can potentially cause node launching failures if MountDir match the same pattern in /etc/exports.
Fix for compute_console_output log file being truncated at every clustermgtd iteration.

3.5.0

ENHANCEMENTS

Add official versioned ParallelCluster policies in a CloudFormation template to allow customers to easily reference them in their workloads.
Add a Python library to allow customers to use ParallelCluster functionalities in their own code.
Add logging of compute node console output to CloudWatch on compute node bootstrap failure.
Add failures field containing failure code and reason to describe-cluster output when cluster creation fails.

CHANGES

Upgrade Slurm to version 22.05.8.
Make Slurm controller logs more verbose and enable additional logging for the Slurm power save plugin.
Upgrade EFA installer to 1.21.0
- Efa-driver: efa-2.1.1-1
- Efa-config: efa-config-1.12-1
- Efa-profile: efa-profile-1.5-1
- Libfabric-aws: libfabric-aws-1.16.1amzn3.0-1
- Rdma-core: rdma-core-43.0-1
- Open MPI: openmpi40-aws-4.1.4-3

BUG FIXES

Fix cluster DB creation by verifying the cluster name is no longer than 40 characters when Slurm accounting is enabled.
Fix an issue in clustermgtd that caused compute nodes rebooted via Slurm to be replaced if the EC2 instance status checks fail.
Fix an issue where compute nodes could not launch with capacity reservations shared by other accounts because of a wrong IAM policy on head node.
Fix an issue where custom AMI creation failed in Ubuntu 20.04 on MySQL packages installation.
Fix an issue where pcluster configure command failed when the account had no IPv4 CIDR subnet.

3.4.1

BUG FIXES

Fix an issue with the Slurm scheduler that might incorrectly apply updates to its internal registry of compute nodes. This might result in EC2 instances to become inaccessible or backed by an incorrect instance type.

3.4.0

ENHANCEMENTS

Add support for launching nodes across multiple availability zones to increase capacity availability.
Add support for specifying multiple subnets for each queue to increase capacity availability.
Add new configuration parameter in Iam/ResourcePrefix to specify a prefix for path and name of IAM resources created by ParallelCluster
Add new configuration section DeploySettings/LambdaFunctionsVpcConfig for specifying the Vpc config used by ParallelCluster Lambda Functions.
Add possibility to specify a custom script to be executed in the head node during the update of the cluster. The script can be specified with OnNodeUpdated parameter when using Slurm as scheduler.

CHANGES

Remove creation of EFS mount targets for existing FS.
Mount EFS file systems using amazon-efs-utils. EFS files systems can be mounted using in-transit encryption and IAM authorized user.
Install stunnel 5.67 on CentOS7 and Ubuntu to support EFS in-transit encryption.
Upgrade EFA installer to 1.20.0
- Efa-driver: efa-2.1
- Efa-config: efa-config-1.11-1
- Efa-profile: efa-profile-1.5-1
- Libfabric-aws: libfabric-aws-1.16.1
- Rdma-core: rdma-core-43.0-2
- Open MPI: openmpi40-aws-4.1.4-3
Upgrade Slurm to version 22.05.7.

3.3.1

CHANGES

Allow to use official product AMIs even after the two years EC2 deprecation time.
Increase memory size of ParallelCluster API Lambda to 2048 in order to reduce cold start penalty and avoid timeouts.

BUG FIXES

Prevent managed FSx for Lustre file systems to be replaced during a cluster update avoiding to support changes on the compute fleet subnet id.
Apply the DeletionPolicy defined on shared storages also during the cluster update operations.

3.3.0

ENHANCEMENTS

Add possibility to specify multiple EC2 instance types for the same compute resource.
Add support for adding and removing shared storages at cluster update by updating SharedStorage configuration.
Add new configuration parameter DeletionPolicy for EFS and FSx for Lustre shared storage to support storage retention.
Add new configuration section Scheduling/SlurmSettings/Database to enable accounting functionality in Slurm.
Add support for On-Demand Capacity Reservations and Capacity Reservations Resource Groups.
Add new configuration parameter in Imds/ImdsSettings to specify the IMDS version to support in a cluster or build image infrastructure.
Add support for Networking/PlacementGroup in the SlurmQueues/ComputeResources section.
Add support for instances with multiple network interfaces that allows only one ENI per device.
Add support for hp6id instance type as compute nodes.
Improve validation of networking for external EFS file systems by checking the CIDR block in the attached security group.
Add validator to check if configured instance types support placement groups.
Configure NFS threads to be min(256, max(8, num_cores * 4)) to ensure better stability and performance.
Move NFS installation at build time to reduce configuration time.
Enable server-side encryption for the EcrImageBuilder SNS topic created when deploying ParallelCluster API and used to notify on docker image build events.

CHANGES

Change behaviour of SlurmQueues/Networking/PlacementGroup/Enabled: now it creates a different managed placement group for each compute resource instead of a single managed placement group for all compute resources.
Add support for PlacementGroup/Name as the preferred naming method.
Move head node tags from Launch Template to instance definition to avoid head node replacement on tags updates.
Disable Multithreading through script executed by cloud-init and not through CpuOptions set into Launch Template.
Upgrade Python to version 3.9 and NodeJS to version 16 in API infrastructure, API Docker container and cluster Lambda resources.
Remove support for Python 3.6 in aws-parallelcluster-batch-cli.
Upgrade Slurm to version 22.05.5.
Upgrade NVIDIA driver to version 470.141.03.
Upgrade NVIDIA Fabric Manager to version 470.141.03.
Upgrade NVIDIA CUDA Toolkit to version 11.7.1.
Upgrade Python used in ParallelCluster virtualenvs from 3.7.13 to 3.9.15.
Upgrade Slurm to version 22.05.5.
Upgrade EFA installer to version 1.18.0.
Upgrade NICE DCV to version 2022.1-13300.
Allow for suppressing the SingleSubnetValidator for Queues.
Remove usage of prolog/epilog Slurm configuration when UseEc2Hostnames is set to true.

BUG FIXES

Fix validation of filters parameter in ListClusterLogStreams command to fail when incorrect filters are passed.
Fix validation of parameter SharedStorage/EfsSettings: now validation fails when FileSystemId is specified along with other SharedStorage/EfsSettings parameters, whereas it was previously ignoring them.
Fix cluster update when changing the order of SharedStorage together with other changes in the configuration.
Fix UpdateParallelClusterLambdaRole in the ParallelCluster API to upload logs to CloudWatch.
Fix Cinc not using the local CA certificates bundle when installing packages before any cookbooks are executed.
Fix a hang in upgrading ubuntu via pcluster build-image when Build:UpdateOsPackages:Enabled:true is set.
Fix parsing of YAML cluster configuration by failing on duplicate keys.

3.2.1

ENHANCEMENTS

Improve the logic to associate the host routing tables to the different network cards to better support EC2 instances with several NICs.

CHANGES

Upgrade NVIDIA driver to version 470.141.03.
Upgrade NVIDIA Fabric Manager to version 470.141.03.
Disable cron job tasks man-db and mlocate, which may have a negative impact on node performance.
Upgrade Intel MPI Library to 2021.6.0.602.
Upgrade Python from 3.7.10 to 3.7.13 in response to this security risk.

BUG FIXES

Avoid failing on DescribeCluster when cluster configuration is not available.

3.2.0

ENHANCEMENTS

Add support for memory-based job scheduling in Slurm
- Configure compute nodes real memory in the Slurm cluster configuration.
- Add new configuration parameter Scheduling/SlurmSettings/EnableMemoryBasedScheduling to enable memory-based scheduling in Slurm.
- Add new configuration parameter Scheduling/SlurmQueues/ComputeResources/SchedulableMemory to override default value of the memory seen by the scheduler on compute nodes.
Improve flexibility on cluster configuration updates to avoid the stop and start of the entire cluster whenever possible.
- Add new configuration parameter Scheduling/SlurmSettings/QueueUpdateStrategy to set the preferred strategy to adopt for compute nodes needing a configuration update and replacement.
Improve failover mechanism over available compute resources when hitting insufficient capacity issues with EC2 instances. Disable compute nodes by a configurable amount of time (default 10 min) when a node launch fails due to insufficient capacity.
Add support to mount existing FSx for ONTAP and FSx for OpenZFS file systems.
Add support to mount multiple instances of existing EFS, FSx for Lustre / for ONTAP/ for OpenZFS file systems.
Add support for FSx for Lustre Persistent_2 deployment type when creating a new file system.
Prompt user to enable EFA for supported instance types when using pcluster configure wizard.
Add support for rebooting compute nodes via Slurm.
Improved handling of Slurm power states to also account for manual powering down of nodes.
Add NVIDIA GDRCopy 2.3 into the product AMIs to enable low-latency GPU memory copy.

CHANGES

Upgrade EFA installer to version 1.17.2
- EFA driver: efa-1.16.0-1
- EFA configuration: efa-config-1.10-1
- EFA profile: efa-profile-1.5-1
- Libfabric: libfabric-aws-1.16.0~amzn2.0-1
- RDMA core: rdma-core-41.0-2
- Open MPI: openmpi40-aws-4.1.4-2
Upgrade NICE DCV to version 2022.0-12760.
Upgrade NVIDIA driver to version 470.129.06.
Upgrade NVIDIA Fabric Manager to version 470.129.06.
Change default EBS volume types from gp2 to gp3 for both the root and additional volumes.
Changes to FSx for Lustre file systems created by ParallelCluster:
- Change the default deployment type to Scratch_2.
- Change the Lustre server version to 2.12.
Do not require PlacementGroup/Enabled to be set to true when passing an existing PlacementGroup/Id.
Add parallelcluster:cluster-name tag to all the resources created by ParallelCluster.
Do not allow setting PlacementGroup/Id when PlacementGroup/Enabled is explicitly set to false.
Add lambda:ListTags and lambda:UntagResource to ParallelClusterUserRole used by ParallelCluster API stack for cluster update.
Restrict IPv6 access to IMDS to root and cluster admin users only, when configuration parameter HeadNode/Imds/Secured is true as by default.
With a custom AMI, use the AMI root volume size instead of the ParallelCluster default of 35 GiB. The value can be changed in cluster configuration file.
Automatic disabling of the compute fleet when the configuration parameter Scheduling/SlurmQueues/ComputeResources/SpotPrice is lower than the minimum required Spot request fulfillment price.
Show requested_value and current_value values in the change set when adding or removing a section during an update.
Disable aws-ubuntu-eni-helper service in DLAMI to avoid conflicts with configure_nw_interface.sh when configuring instances with multiple network cards.
Remove support for Python 3.6.
Set MTU to 9001 for all the network interfaces when configuring instances with multiple network cards.
Remove the trailing dot when configuring the compute node FQDN.

BUG FIXES

Fix Slurm issue that prevents idle nodes termination.
Fix the default behavior to skip the ParallelCluster validation and test steps when building a custom AMI.
Fix file handle leak in computemgtd.
Fix race condition that was sporadically causing launched instances to be immediately terminated because not available yet in EC2 DescribeInstances response
Fix support for DisableSimultaneousMultithreading parameter on instance types with Arm processors.
Fix ParallelCluster API stack update failure when upgrading from a previus version. Add resource pattern used for the ListImagePipelineImages action in the EcrImageDeletionLambdaRole.
Fix ParallelCluster API adding missing permissions needed to import/export from S3 when creating an FSx for Lustre storage.

3.1.5

CHANGES

Upgrade EFA installer to 1.18.0
- Efa-driver: efa-1.16.0-1
- Efa-config: efa-config-1.11-1
- Efa-profile: efa-profile-1.5-1
- Libfabric-aws: libfabric-aws-1.16.0~amzn4.0-1
- Rdma-core: rdma-core-41.0-2
- Open MPI: openmpi40-aws-4.1.4-2
Add lambda:ListTags and lambda:UntagResource to ParallelClusterUserRole used by ParallelCluster API stack for cluster update.
Upgrade Intel MPI Library to 2021.6.0.602.
Upgrade NVIDIA driver to version 470.141.03.
Upgrade NVIDIA Fabric Manager to version 470.141.03.

BUG FIXES

Fix Slurm issue that prevents idle nodes termination.

3.1.4

ENHANCEMENTS

Add validation for DirectoryService/PasswordSecretArn to fail in case the secret does not exist.

CHANGES

Upgrade Slurm to version 21.08.8-2.
Build Slurm with JWT support.
Do not require PlacementGroup/Enabled to be set to true when passing an existing PlacementGroup/Id.
Add lambda:TagsResource to ParallelClusterUserRole used by ParallelCluster API stack for cluster creation and image creation.

BUG FIXES

Fix the ability to export cluster's logs when using export-cluster-logs command with the --filters option.
Fix AWS Batch Docker entrypoint to use /home shared directory to coordinate Multi-node-Parallel job execution.

3.1.3

ENHANCEMENTS

Execute SSH key creation alongside with the creation of HOME directory, i.e. during SSH login, when switching to another user and when executing a command as another user.
Add support for both FQDN and LDAP Distinguished Names in the configuration parameter DirectoryService/DomainName. The new validator now checks both the syntaxes.
New update_directory_service_password.sh script deployed on the head node supports the manual update of the Active Directory password in the SSSD configuration. The password is retrieved by the AWS Secrets Manager as from the cluster configuration.
Add support to deploy API infrastructure in environments without a default VPC.
Add validation for DirectoryService/AdditionalSssdConfigs to fail in case of invalid overrides.
Make DirectoryService/AdditionalSssdConfigs be merged into final SSSD configuration rather than be appended.

CHANGES

Disable deeper C-States in x86_64 official AMIs and AMIs created through build-image command, to guarantee high performance and low latency.
OS package updates and security fixes.
Change Amazon Linux 2 base images to use AMIs with Kernel 5.10.

BUG FIXES

Fix build-image stack in DELETE_FAILED after image built successful, due to new EC2ImageBuilder policies.
Fix the configuration parameter DirectoryService/DomainAddr conversion to ldap_uri SSSD property when it contains multiples domain addresses.
Fix DCV not loading user profile at session start. The user's PATH was not correctly set at DCV session connection.

3.1.2

CHANGES

Upgrade Slurm to version 21.08.6.

BUG FIXES

Fix the update of /etc/hosts file on computes nodes when a cluster is deployed in subnets without internet access.
Fix compute nodes bootstrap by waiting for ephemeral drives initialization before joining the cluster.

3.1.1

ENHANCEMENTS

Add support for multiple users cluster environments by integrating with Active Directory (AD) domains managed via AWS Directory Service.
Enable cluster creation in subnets with no internet access.
Add abbreviated flags for cluster-name (-n), region (-r), image-id (-i) and cluster-configuration / image-configuration (-c) to the cli.
Add support for multiple compute resources with same instance type per queue.
Add support for UseEc2Hostnames in the cluster configuration file. When set to true, use EC2 default hostnames (e.g. ip-1-2-3-4) for compute nodes.
Add support for GPU scheduling with Slurm on ARM instances with NVIDIA cards. Install NVIDIA drivers and CUDA library for ARM.
Add parallelcluster:compute-resource-name tag to LaunchTemplates used by compute nodes.
Add support for NEW_CHANGED_DELETED as value of FSx for Lustre AutoImportPolicy option.
Explicitly set cloud-init datasource to be EC2. This save boot time for Ubuntu and CentOS platforms.
Improve Security Groups created within the cluster to allow inbound connections from custom security groups when SecurityGroups parameter is specified for head node and/or queues.
Build Slurm with slurmrestd support.

CHANGES

Upgrade Slurm to version 21.08.5.
Upgrade NICE DCV to version 2021.3-11591.
Upgrade NVIDIA driver to version 470.103.01.
Upgrade CUDA library to version 11.4.4.
Upgrade NVIDIA Fabric manager to version 470.103.01.
Upgrade Intel MPI Library to 2021.4.0.441.
Upgrade PMIx to version 3.2.3.
Disable package update at instance launch time on Amazon Linux 2.
Enable possibility to suppress SlurmQueues and ComputeResources length validators.
Use compute resource name rather than instance type in compute fleet Launch Template name.
Disable EC2 ImageBuilder enhanced image metadata when building ParallelCluster custom images.
Remove dumping of failed compute nodes to /home/logs/compute. Compute nodes log files are available in CloudWatch and in EC2 console logs.

BUG FIXES

Redirect stderr and stdout to CLI log file to prevent unwanted text to pollute the pcluster CLI output.
Fix exporting of cluster logs when there is no prefix specified, previously exported to a None prefix.
Fix rollback not being performed in case of cluster update failure.
Do not configure GPUs in Slurm when NVIDIA driver is not installed.
Fix ecs:ListContainerInstances permission in BatchUserRole.
Fix RootVolume schema for the HeadNode by raising an error if unsupported KmsKeyId is specified.
Fix EfaSecurityGroupValidator. Previously, it may produce false failures when custom security groups were provided and EFA was enabled.
Fix FSx metrics not displayed in Cloudwatch Dashboard.

3.0.3

CHANGES

Disable log4j-cve-2021-44228-hotpatch service on Amazon Linux to avoid incurring in potential performance degradation.

3.0.2

CHANGES

Upgrade EFA installer to version 1.14.1. Thereafter, EFA enables GDR support by default on supported instance type(s). ParallelCluster does not reinstall EFA during node start. Previously, EFA was reinstalled if GdrSupport had been turned on in the configuration file. The GdrSupport parameter has no effect and should no longer be used.
- EFA configuration: efa-config-1.9-1
- EFA profile: efa-profile-1.5-1
- EFA kernel module: efa-1.14.2
- RDMA core: rdma-core-37.0
- Libfabric: libfabric-1.13.2
- Open MPI: openmpi40-aws-4.1.1-2

BUG FIXES

Fix issue that is preventing cluster names to start with parallelcluster- prefix.

3.0.1

ENHANCEMENTS

Add pcluster3-config-converter CLI command to convert cluster configuration from ParallelCluster 2 to ParallelCluster 3 version.
The region parameter is now retrieved from the provider chain, thus supporting the use of profiles and defaults specified in the ~/.aws/config file.
export ParallelClusterApiInvokeUrl and ParallelClusterApiUserRole in CloudFormation API Stack so they can be used by cross-stack references.

CHANGES

Drop support for SysVinit. Only Systemd is supported.
Include tags from cluster configuration file in the RunInstances dry runs performed during configuration validation.
Allow '*' character in the configuration of S3Access/BucketName.

BUG FIXES

Pin to the transitive dependencies resulting from the dependency on connexion.
Fix cleanup of ECR resources when API infrastructure template is deleted.
Fix supervisord service not enabled on Ubuntu. This was causing supervisord not to be started on instance reboot.
Update ca-certificates package during AMI build time and have Cinc use the updated CA certificates bundle.
Close stderr before exiting from pcluster CLI commands to avoid BrokenPipeError for processes that close the other end of the stdout pipe.

3.0.0

ENHANCEMENTS

Add support for pcluster actions (e.g., create-cluster, update-cluster, delete-cluster) through HTTP endpoints with Amazon API Gateway.
Revamp custom AMI creation and management by leveraging EC2 Image Builder. This also includes the implementation of build-image, delete-image, describe-image and list-image commands to manage custom ParallelCluster images.
Add list-official-images command to describe ParallelCluster official AMIs.
Add export-cluster-logs, list-cluster-logs and get-cluster-log-events commands to retrieve both CloudWatch Logs and CloudFormation Stack Events. Add export-image-logs, list-image-logs and get-image-log-events commands to retrieve both Image Builder Logs and CloudFormation Stack Events.
Enable the possibility to restart / reboot the head node also for instance types with instance store. Those operations remain anyway managed by the user that is responsible for the status of the cluster while operating on the head node, e.g. stopping the compute fleet first.
Add support to use an existing Private Route53 Hosted Zone when using Slurm as scheduler.
Add the possibility to configure the instance profile as alternative to configuring the IAM role for the head and for each compute queue.
Add the possibility to configure IAM role, profile and policies for head node and for each compute queue.
Add possibility to configure different security groups for each queue.
Allow full control on the name of CloudFormation stacks created by ParallelCluster by removing the parallelcluster- prefix.
Add multiple queues and compute resources support for pcluster configure when the scheduler is Slurm.
Add prompt for availability zone in pcluster configure automated subnets creation.
Add configuration HeadNode / Imds / Secured to enable/disable restricted access to Instance Metadata Service (IMDS).
Implement scaling protection mechanism with Slurm scheduler: compute fleet is automatically set to 'PROTECTED' state in case recurrent failures are encountered when provisioning nodes.
Add --suppress-validators and --validation-failure-level parameters to create and update commands.
Add support for associating an existing Elastic IP to the head node.
Extend limits for supported number of Slurm queues (10) and compute resources (5).
Encrypt root EBS volumes and shared EBS volumes by default. Note that if the scheduler is AWS Batch, the root volumes of the compute nodes cannot be encrypted by ParallelCluster.

CHANGES

Upgrade EFA installer to version 1.13.0
- EFA configuration: efa-config-1.9
- EFA profile: efa-profile-1.5
- EFA kernel module: efa-1.13.0
- RDMA core: rdma-core-35
- Libfabric: libfabric-1.13.0
- Open MPI: openmpi40-aws-4.1.1-2
Upgrade NICE DCV to version 2021.1-10851.
Upgrade Slurm to version 20.11.8.
Upgrade NVIDIA driver to version 470.57.02.
Upgrade CUDA library to version 11.4.0.
Upgrade Cinc Client to version 17.2.29.
Upgrade Python runtime used by Lambda functions in AWS Batch integration to python3.8.
Remove support for SGE and Torque schedulers.
Remove support for CentOS8.
Change format and syntax of the configuration file to be used to create the cluster, from ini to YAML. A cluster configuration file now only includes the definition of a single cluster.
Remove --cluster-template, --extra-parameters and --tags parameters for the create command.
Remove --cluster-template, --extra-parameters, --reset-desired and --yes parameters for the update command.
Remove --config parameter for delete, status, start, stop, instances and list commands.
Remove possibility to specify aliases for ssh command in the configuration file.
Distribute AWS Batch commands: awsbhosts, awsbkill, awsbout, awsbqueues, awsbstat and awsbsub as a separate aws-parallelcluster-awsbatch-cli PyPI package.
Add timestamp suffix to CloudWatch Log Group name created for the cluster.
Remove pcluster-config CLI utility.
Remove amis.txt file.
Remove additional EBS volume attached to the head node by default.
Change NICE DCV session storage path to /home/{UserName}.
Create a single ParallelCluster S3 bucket for each AWS region rather than for each cluster.
Adopt inclusive language
- Rename MasterServer to HeadNode in CLI outputs.
- Rename variable exported in the AWS Batch job environment from MASTER_IP to PCLUSTER_HEAD_NODE_IP.
- Rename all CFN outputs from Master* to HeadNode*.
- Rename NodeType and tags from Master to HeadNode.
Rename tags (Note: the following tags are crucial for ParallelCluster scaling logic):
- aws-parallelcluster-node-type -> parallelcluster:node-type
- ClusterName -> parallelcluster:cluster-name
- aws-parallelcluster-attributes -> parallelcluster:attributes
- Version -> parallelcluster:version
Remove tag: Application.
Remove runtime creation method of custom ParallelCluster AMIs.
Retain CloudWatch logs on cluster deletion by default. If you want to delete the logs during cluster deletion, set Monitoring / Logs / CloudWatch / RetainOnDeletion to False in the configuration file.
Remove instance store software encryption option (encrypted_ephemeral) and rely on default hardware encryption provided by NVMe instance store volumes.
Add tag 'Name' to every shared storage with the value specified in the shared storage name config.
Remove installation of MPICH and FFTW packages.
Remove Ganglia support.
Disable unattended packages update on Ubuntu.

2.11.3

CHANGES

Upgrade EFA installer to version 1.14.1. Thereafter, EFA enables GDR support by default on supported instance type(s). ParallelCluster does not reinstall EFA during node start. Previously, EFA was reinstalled if enable_efa_gdr had been turned on in the configuration file. The enable_efa_gdr parameter has no effect and should no longer be used.
- EFA configuration: efa-config-1.9-1
- EFA profile: efa-profile-1.5-1
- EFA kernel module: efa-1.14.2
- RDMA core: rdma-core-37.0
- Libfabric: libfabric-1.13.2
- Open MPI: openmpi40-aws-4.1.1-2
Include tags from cluster configuration file in the RunInstances dry runs performed during configuration validation.

BUG FIXES

Fix the create custom AMI functionality issues:
- SGE download URL no more reachable. Use Debian repository to download SGE source archive.
- Outdated CA certificates used by Cinc. Update ca-certificates package during AMI build time.
Fix cluster update when using proxy setup.

2.11.2

CHANGES

When using a custom AMI with a preinstalled EFA package, no actions are taken at node bootstrap time in case GPUDirect RDMA is enabled. The original EFA package deployment is preserved as during the createami process.

BUG FIXES

Lock the version of nvidia-fabricmanager package to the installed NVIDIA drivers to prevent updates and misalignments.
Slurm: fix issue that prevented powering-up nodes to be correctly reset after a stop and start of the cluster.

2.11.1

CHANGES

Restore noatime option, which has positive impact on the performances of NFS filesystem.
Upgrade EFA installer to version 1.12.3
- EFA configuration: efa-config-1.9 (from efa-config-1.8-1)
- EFA kernel module: efa-1.13.0 (from efa-1.12.3)

BUG FIXES

Pin to version 1.247347 of the CloudWatch agent due to performance impact of latest CW agent version 1.247348.
Avoid failures when building SGE using instance type with vCPU >=32.

2.11.0

ENHANCEMENTS

Add support for Ubuntu 20.04.
Add support for using FSx Lustre in subnet with no internet access.
Add support for building Centos 7 AMIs on ARM.
Add support for FSx Lustre DataCompressionType feature.
Add validation to prevent using a cluster_resource_bucket that is in a different region than the cluster.
Install SSM agent on CentOS 7 and 8.
Add support for security_group_id in packer custom builders. Customers can export AWS_SECURITY_GROUP_ID environment variable to specify security group for custom builders when building custom AMIs.
SGE: always use shortname as hostname filter with qstat. This will make nodewatcher more robust when using custom DHCP option, where the full hostname seen by SGE might differ from the hostname returned from EC2 metadata(local-hostname).
Transition from IMDSv1 to IMDSv2.

CHANGES

Ubuntu 16.04 is no longer supported.
Amazon Linux is no longer supported.
Make key_name parameter optional to support cluster configurations without a key pair.
Remove support for Python versions < 3.6.
- Remove dependency on future package and __future__ module.
Root volume size increased from 25GB to 35GB on all AMIs. Minimum root volume size is now 35GB.
Add sanity check to prevent cluster creation in an AWS region not officially supported by ParallelCluster.
Restrict IAM permissions to only allow cluster IAM instance role to launch instances via run-instances in cluster compute subnet.
Upgrade EFA installer to version 1.12.2
- EFA configuration: efa-config-1.8-1 (from efa-config-1.7)
- EFA profile: efa-profile-1.5-1 (from efa-profile-1.4)
- EFA kernel module: efa-1.12.3 (from efa-1.10.2)
- RDMA core: rdma-core-32.1amzn (from rdma-core-31.2amzn)
- Libfabric: libfabric-1.11.2amzon1.1-1 (from libfabric-1.11.1amzn1.0)
- Open MPI: openmpi40-aws-4.1.1-2 (from openmpi40-aws-4.1.0)
Upgrade Slurm to version 20.11.7.
- Update slurmctld and slurmd systemd unit files according to latest provided by slurm.
- Add new SlurmctldParameters, power_save_min_interval=30, so power actions will be processed every 30 seconds.
- Add new SlurmctldParameters, cloud_reg_addrs, which will reset a node's NodeAddr automatically on power_down.
- Specify instance GPU model as GRES GPU Type in gres.conf, instead of previous hardcoded value Type=tesla for all GPU.
Upgrade Arm Performance Libraries (APL) to version 21.0.0.
Upgrade NICE DCV to version 2021.1-10557.
Upgrade NVIDIA driver to version 460.73.01.
Upgrade CUDA library to version 11.3.0.
Upgrade NVIDIA Fabric manager to nvidia-fabricmanager-460.
Install ParallelCluster AWSBatch CLI in dedicated python3 virtual env.
Upgrade Python version used in ParallelCluster virtualenvs from version 3.6.13 to version 3.7.10.
Upgrade Cinc Client to version 16.13.16.
Upgrade third-party cookbook dependencies:
- apt-7.4.0 (from apt-7.3.0)
- iptables-8.0.0 (from iptables-7.1.0)
- line-4.0.1 (from line-2.9.0)
- openssh-2.9.1 (from openssh-2.8.1)
- pyenv-3.4.2 (from pyenv-3.1.1)
- selinux-3.1.1 (from selinux-2.1.1)
- ulimit-1.1.1 (from ulimit-1.0.0)
- yum-6.1.1 (from yum-5.1.0)
- yum-epel-4.1.2 (from yum-epel-3.3.0)
Drop lightdm package install from Ubuntu 18.04 DCV installation process.

BUG FIXES

Use ICP-compliant AL2 repo URLs when building Docker images in China
Fix a bug that caused clustermgtd to not immediately replace instances with failed status check that are in replacement process.

2.10.4

CHANGES

Upgrade Slurm to version 20.02.7.

2.10.3

ENHANCEMENTS

Enable support for ARM instances in China and GovCloud regions when using Ubuntu 18.04 or Amazon Linux 2.
Add validation for cluster_type configuration parameter in cluster section.
Add validation for compute_type configuration parameter in queue section.

CHANGES

Upgrade EFA installer to version 1.11.2
- EFA configuration: efa-config-1.7 (no change)
- EFA profile: efa-profile-1.4 (from efa-profile-1.3)
- EFA kernel module: efa-1.10.2 (no change)
- RDMA core: rdma-core-31.2amzn (no change)
- Libfabric: libfabric-1.11.1amzn1.0 (no change)
- Open MPI: openmpi40-aws-4.1.0 (no change)

BUG FIXES

Fix issue with awsbsub command when setting environment variables for the job submission

2.10.2

ENHANCEMENTS

Improve cluster config validation by using cluster target AMI when invoking RunInstances in dryrun mode
Improve configuration procedure for the Munge service.

CHANGES

Update Python version used in ParallelCluster virtualenvs from version 3.6.9 to version 3.6.13.

BUG FIXES

Fix sanity checks with ARM instance types by using cluster AMI when performing validation
Fix enable_efa parameter validation when using Centos8 and Slurm or ARM instances.
Use non interactive apt update command when building custom Ubuntu AMIs.
Fix encrypted_ephemeral = true when using Alinux2 or CentOS8

2.10.1

ENHANCEMENTS

Add support for me-south-1 region (Bahrein), af-south-1 region (Cape Town) and eu-south-1 region (Milan)
- At the time of this version launch:
  - Amazon FSx for Lustre and ARM instance types are not supported in me-south-1, af-south-1 and eu-south-1
  - AWS Batch is not supported in af-south-1
  - EBS io2 is not supported in af-south-1 and eu-south-1
Install Arm Performance Libraries (APL) 20.2.1 on ARM AMIs (CentOS8, Alinux2, Ubuntu1804).
Install EFA kernel module on ARM instances with alinux2 and ubuntu1804. This enables support for c6gn instances.
Add support for io2 and gp3 EBS volume type.
Add iam_lambda_role parameter under cluster section to enable the possibility to specify an existing IAM role to be used by AWS Lambda functions in CloudFormation. When using sge, torque, or slurm as the scheduler, pcluster will not create any IAM role if both ec2_iam_role and iam_lambda_role are provided.
Improve robustness of a Slurm cluster when clustermgtd is down.
Configure NFS threads to be max(8, num_cores) for performance. This enhancement will not take effect on Ubuntu 16.04.
Optimize calls to DescribeInstanceTypes EC2 API when validating cluster configuration.

CHANGES

Upgrade EFA installer to version 1.11.1.
- EFA configuration: efa-config-1.7 (from efa-config-1.5)
- EFA profile: efa-profile-1.3 (from efa-profile-1.1)
- EFA kernel module: efa-1.10.2 (no change)
- RDMA core: rdma-core-31.2amzn (from rdma-core-31.amzn0)
- Libfabric: libfabric-1.11.1amzn1.0 (from libfabric-1.11.1amzn1.1)
- Open MPI: openmpi40-aws-4.1.0 (from openmpi40-aws-4.0.5)
Upgrade Intel MPI to version U8.
Upgrade NICE DCV to version 2020.2-9662.
Set default systemd runlevel to multi-user.target on all OSes during ParallelCluster official AMI creation. The runlevel is set to graphical.target on head node only when DCV is enabled. This prevents the execution of graphical services, such as x/gdm, when they are not required.
Download Intel MPI and HPC packages from S3 rather than Intel yum repos.
Change the default of instance types from the hardcoded t2.micro to the free tier instance type (t2.micro or t3.micro dependent on region). In regions without free tier, the default is t3.micro.
Enable support for p4d as head node instance type (p4d was already supported as compute node in 2.10.0).
Pull Amazon Linux Docker images from public ECR when building docker image for awsbatch scheduler.
Increase max retry attempts when registering Slurm nodes in Route53.

BUG FIXES

Fix pcluster createami for Ubuntu 1804 by downloading SGE sources from Debian repository and not from the EOL Ubuntu 19.10.
Remove CloudFormation DescribeStacks API call from AWS Batch Docker entrypoint. This removes the risk of job failures due to CloudFormation throttling.
Mandate the presence of vpc_settings, vpc_id, master_subnet_id in the config file to avoid unhandled exceptions.
Set the default EBS volume size to 500 GiB when volume type is st1 or sc1.
Fix installation of Intel PSXE package on CentOS 7 by using yum4.
Fix routing issues with multiple Network Interfaces on Ubuntu 18.04.

2.10.0

ENHANCEMENTS

Add support for CentOS 8 in all Commercial regions.
Add support for P4d instance type as compute node.
Add the possibility to enable NVIDIA GPUDirect RDMA support on EFA by using the new enable_efa_gdr configuration parameter.
Enable support for NICE DCV in GovCloud regions.
Enable support for AWS Batch scheduler in GovCloud regions.
FSx Lustre:
- Add possibility to configure Auto Import policy through the new auto_import_policy parameter.
- Add support to HDD storage type and the new storage_type and drive_cache_type configuration parameters.
Create a CloudWatch Dashboard for the cluster, named <clustername>-<region>, including head node EC2 metrics and cluster logs. It can be disabled by configuring the enable parameter in the dashboard section.
Add -r/-region arg to pcluster configure command. If this arg is provided, configuration will skip region selection.
Add -r/-region arg tossh and dcv connect commands.
Add cluster_resource_bucket parameter under cluster section to allow the user to specify an existing S3 bucket.
createami:
- Add validation step to fail when using a base AMI created by a different version of ParallelCluster.
- Add validation step for AMI creation process to fail if the selected OS and the base AMI OS are not consistent.
- Add --post-install parameter to use a post installation script when building an AMI.
- Add the possibility to use a ParallelCluster base AMI.
Add possibility to change tags when performing a pcluster update.
Add new all_or_nothing_batch configuration parameter for slurm_resume script. When True, slurm_resume will succeed only if all the instances required by all the pending jobs in Slurm will be available.
Enable queue resizing on update without requiring to stop the compute fleet. Stopping the compute fleet is only necessary when existing instances risk to be terminated.
Add validator for EBS volume size, type and IOPS.
Add validators for shared_dir parameter when used in both cluster and ebs sections.
Add validator cfn_scheduler_slots key in the extra_json parameter.

CHANGES

CentOS 6 is no longer supported.
Upgrade EFA installer to version 1.10.1
- EFA configuration: efa-config-1.5 (from efa-config-1.4)
- EFA profile: efa-profile-1.1 (from efa-profile-1.0.0)
- EFA kernel module: efa-1.10.2 (from efa-1.6.0)
- RDMA core: rdma-core-31.amzn0 (from rdma-core-28.amzn0)
- Libfabric: libfabric-1.11.1amzn1.1 (from libfabric-1.10.1amzn1.1)
- Open MPI: openmpi40-aws-4.0.5 (from openmpi40-aws-4.0.3)
- Unifies installer runtime options across x86 and aarch64
- Introduces -g/--enable-gdr switch to install packages with GPUDirect RDMA support
- Updates to OMPI collectives decision file packaging, migrated from efa-config to efa-profile
- Introduces CentOS 8 support
Upgrade NVIDIA driver to version 450.80.02.
Install NVIDIA Fabric manager to enable NVIDIA NVSwitch on supported platforms.
Remove default region us-east-1. After the change, pcluster will adhere to the following lookup order for region:
1. -r/--region arg.
2. AWS_DEFAULT_REGION environment variable.
3. aws_region_name in ParallelCluster configuration file.
4. region in AWScli configuration file.
Slurm: change SlurmctldPort to 6820-6829 to not overlap with default slurmdbd port (6819).
Slurm: add compute_resource name and efa as node features.
Remove validation on ec2_iam_role parameter.
Improve retrieval of instance type info by using DescribeInstanceType API.
Remove custom_awsbatch_template_url configuration parameter.
Upgrade pip to latest version in virtual environments.
Upgrade image used by CodeBuild environment when building container images for AWS Batch clusters, from aws/codebuild/amazonlinux2-x86_64-standard:1.0 to aws/codebuild/amazonlinux2-x86_64-standard:3.0.

BUG FIXES

Retrieve the right number of compute instance slots when instance type is updated.
Include user tags in compute nodes and EBS volumes.
Fix pcluster status output when head node is stopped.
pcluster update:
- Fix issue when tags are specified but not changed.
- Fix issue when the cluster section label changed.
- Fix issue when shared_dir and ebs_settings are both configured in the cluster section.
- Fix cluster and cfncluster compatibility in extra_json parameter.
Fix pcluster configure to avoid using default/initial values for internal parameter initialization.
Fix pre/post install script arguments management when using double quotes.
Fix a bug that was causing clustermgtd and computemgtd sleep interval to be incorrectly computed when system timezone is not set to UTC.
Fix queue name validator to properly check for capital letters.
Fix enable_efa parameter validation for queue section.
Fix CloudWatch Log Group creation for AWS Lambda functions handling CloudFormation Custom Resources.

2.9.1

BUG FIXES

Fix cluster creation with the head node in a private subnet when it doesn't get a public IP.

2.9.0

ENHANCEMENTS

Add support for multiple queues and multiple instance types feature with the Slurm scheduler.
Extend NICE DCV support to ARM instances.
Extend support to disable hyperthreading on instances (like *.metal) that don't support CpuOptions in LaunchTemplate.
Enable support for NFS 4 for the filesystems shared from the head node.
Add CLI utility to convert configuration files with Slurm scheduler to new format to support multiple queues configuration.
Add script wrapper to support Torque-like commands with the Slurm scheduler.
Remove dependency on cfn-init in compute nodes bootstrap in order to avoid throttling and delays caused by CloudFormation when a large number of compute nodes join the cluster.

CHANGES

Introduce new configuration sections and parameters to support multiple queues and multiple instance types.
Optimize scaling logic with Slurm scheduler, no longer based on Auto Scaling groups.
A Route53 private hosted zone is now created together with the cluster and used in DNS resolution inside cluster nodes when using Slurm scheduler.
Upgrade EFA installer to version 1.9.5:
- EFA configuration: efa-config-1.4 (from efa-config-1.3)
- EFA profile: efa-profile-1.0.0
- EFA kernel module: efa-1.6.0 (no change)
- RDMA core: rdma-core-28.amzn0 (no change)
- Libfabric: libfabric-1.10.1amzn1.1 (no change)
- Open MPI: openmpi40-aws-4.0.3 (no change)
Upgrade Slurm to version 20.02.4.
Apply the following changes to Slurm configuration:
- Assign a range of 10 ports to Slurmctld in order to better perform with large cluster settings
- Configure cloud scheduling logic
- Set ReconfigFlags=KeepPartState
- Set MessageTimeout=60
- Set TaskPlugin=task/affinity,task/cgroup together with TaskAffinity=no and ConstrainCores=yes in cgroup.conf
Upgrade NICE DCV to version 2020.1-9012.
Use private IP instead of master node hostname when mounting shared NFS drives.
Add new log streams to CloudWatch: chef-client, clustermgtd, computemgtd, slurm_resume, slurm_suspend.
Add support for queue names in pre/post install scripts.
Use PAY_PER_REQUEST billing mode for DynamoDb table in govcloud regions.
Add limit of section names length to 30 characters in the configuration file.

BUG FIXES

Solve dpkg lock issue with Ubuntu that prevented custom AMI creation in some cases.
Add/improve sanity checks for some configuration parameters.
Prevent ignored changes from being reported in pcluster update output.
Fix incompatibility issues with python 2.7 for pcluster update.
Fix SNS Topic Subscriptions not being deleted with cluster's CloudFormation stack.

2.8.1

CHANGES

Disable screen lock for DCV desktop sessions to prevent users from being locked out.

BUG FIXES

Fix pcluster configure command to avoid writing unexpected configuration parameters.

2.8.0

ENHANCEMENTS

Enable support for ARM instances on Ubuntu 18.04 and Amazon Linux 2.
Add support for the automatic backup features of FSx file systems.
Renewed user experience and robustness of cluster update functionality.
Support DCV and EFS in China regions.
Use DescribeInstanceTypes API to validate whether an instance type is EFA-enabled so that new EFA instances can be used without requiring an update to the ParallelCluster configuration files.
Enable Slurm to directly launch tasks and initialize communications through PMIx v3.1.5 on all supported operating systems except for CentOS 6.
Print a warning when using NICE DCV on micro or nano instances.

CHANGES

Remove the client requirement to have Berkshelf to build a custom AMI.
Upgrade EFA installer to version 1.9.4:
- Kernel module: efa-2.6.0 (from efa-1.5.1)
- RDMA core: rdma-core-28.amzn0 (from rdma-core-25.0)
- Libfabric: libfabric-1.10.1amzn1.1 (updated from libfabric-aws-1.9.0amzn1.1)
- Open MPI: openmpi40-aws-4.0.3 (no change)
Avoid unnecessary validation of IAM policies.
Removed unused dependency on supervisor from the Batch Dockerfile.
Move all LogGroup definitions in the CloudFormation templates into the CloudWatch substack.
Disable libvirtd service on CentOS 7. Virtual bridge interfaces are incorrectly detected by Open MPI and cause MPI applications to hang, see https://www.open-mpi.org/faq/?category=tcp#tcp-selection for details
Use CINC instead of Chef for provisioning instances. See https://cinc.sh/about/ for details.
Retry when mounting an NFS mount fails.
Install the pyenv virtual environments used by ParallelCluster cookbook and node daemon code under /opt/parallelcluster instead of under /usr/local.
Use the new official CentOS 7 AMI as the base images for ParallelCluster AMI.
Upgrade NVIDIA driver to Tesla version 440.95.01 on CentOS 6 and version 450.51.05 on all other distros.
Upgrade CUDA library to version 11.0 on all distros besides CentOS 6.
Install third-party cookbook dependencies via local source, rather than using the Chef supermarket.
Use https wherever possible in download URLs.
Install glibc-static, which is required to support certain options for the Intel MPI compiler.
Require an initial cluster size greater than zero when the option to maintain the initial cluster size is used.

BUG FIXES

Fix validator for CIDR-formatted IP range parameters.
Fix issue that was preventing concurrent use of custom node and pcluster CLI packages.
Use the correct domain name when contacting AWS services from the China partition.

2.7.0

ENHANCEMENTS

sqswatcher: The daemon is now compatible with VPC Endpoints so that SQS messages can be passed without traversing the public internet.

CHANGES

Upgrade NICE DCV to version 2020.0-8428.
Upgrade Intel MPI to version U7.
Upgrade NVIDIA driver to version 440.64.00.
Upgrade EFA installer to version 1.8.4:
- Kernel module: efa-1.5.1 (no change)
- RDMA core: rdma-core-25.0 (no change)
- Libfabric: libfabric-aws-1.9.0amzn1.1 (no change)
- Open MPI: openmpi40-aws-4.0.3 (updated from openmpi40-aws-4.0.2)
Upgrade CentOS 7 AMI to version 7.8
Configuration: base_os and scheduler parameters are now mandatory and they have no longer a default value.

BUG FIXES

Fix recipes installation at runtime by adding the bootstrapped file at the end of the last chef run.
Fix installation of FSx Lustre client on Centos 7
FSx Lustre: Exit with error when failing to retrieve FSx mountpoint
Fix sanity_check behavior when max queue_size > 1000

2.6.1

ENHANCEMENTS

Improved management of S3 bucket that gets created when awsbatch scheduler is selected.
Add validation for supported OSes when using FSx Lustre.
Change ProctrackType from proctrack/gpid to proctrack/cgroup in Slurm in order to better handle termination of stray processes when running MPI applications. This also includes the creation of a cgroup Slurm configuration in in order to enable the cgroup plugin.
Skip execution, at node bootstrap time, of all those install recipes that are already applied at AMI creation time.
Start CloudWatch agent earlier in the node bootstrapping phase so that cookbook execution failures are correctly uploaded and are available for troubleshooting.
Improved the management of SQS messages and retries to speed-up recovery times when failures occur.

CHANGES

FSx Lustre: remove x-systemd.requires=lnet.service from mount options in order to rely on default lnet setup provided by Lustre.
Enforce Packer version to be >= 1.4.0 when building an AMI. This is also required for customers using pcluster createami command.
Do not launch a replacement for an unhealthy or unresponsive node until this is terminated. This makes cluster slower at provisioning new nodes when failures occur but prevents any temporary over-scaling with respect to the expected capacity.
Increase parallelism when starting slurmd on compute nodes that join the cluster from 10 to 30.
Reduce the verbosity of messages logged by the node daemons.
Do not dump logs to /home/logs when nodewatcher encounters a failure and terminates the node. CloudWatch can be used to debug such failures.
Reduce the number of retries for failed REMOVE events in sqswatcher.
Omit cfn-init-cmd and cfn-wire from the files stored in CloudWatch logs.

BUG FIXES

Configure proxy during cloud-init boothook in order for the proxy to be configured for all bootstrap actions.
Fix installation of Intel Parallel Studio XE Runtime that requires yum4 since version 2019.5.
Fix compilation of Torque scheduler on Ubuntu 18.04.
Fixed a bug in the ordering and retrying of SQS messages that was causing, under certain circumstances of heavy load, the scheduler configuration to be left in an inconsistent state.
Delete from queue the REMOVE events that are discarded due to hostname collision with another event fetched as part of the same sqswatcher iteration.

2.6.0

ENHANCEMENTS

Add support for Amazon Linux 2
Add support for NICE DCV on Ubuntu 18.04
Add support for FSx Lustre on Ubuntu 18.04 and Ubuntu 16.04
New CloudWatch logging capability to collect cluster and job scheduler logs to CloudWatch for cluster monitoring and inspection
- Add --keep-logs flag to pcluster delete command to preserve logs at cluster deletion
Install and setup Amazon Time Sync on all OSs
Enabling accounting plugin in Slurm for all OSes. Note: accounting is not enabled nor configured by default
Add retry on throttling from CloudFormation API, happening when several compute nodes are being bootstrapped concurrently
Display detailed substack failures when pcluster create fails due to a substack error
Create additional EFS mount target in the AZ of compute subnet, if needed
Add validator for FSx Lustre Weekly Maintenance Start Time parameter
Add validator to the KMS key provided for EBS, FSx, and EFS
Add validator for S3 external resource
Support two new FSx Lustre features, Scratch 2 and Persistent filesystems
- Add two new parameters deployment_type and per_unit_storage_throughput to the fsx section
- Add new storage sizes storage_capacity, 1,200 GiB, 2,400 GiB and multiples of 2,400 are supported with SCRATCH_2
- In transit encryption is available via fsx_kms_key_id parameter when deployment_type = PERSISTENT_1
- New parameter per_unit_storage_throughput is available when deployment_type = PERSISTENT_1

CHANGES

Upgrade Slurm to version 19.05.5
Upgrade Intel MPI to version U6
Upgrade EFA installer to version 1.8.3:
- Kernel module: efa-1.5.1 (updated from efa-1.4.1)
- RDMA core: rdma-core-25.0 (distributed only) (no change)
- Libfabric: libfabric-aws-1.9.0amzn1.1 (updated from libfabric-aws-1.8.1amzn1.3)
- Open MPI: openmpi40-aws-4.0.2 (no change)
Install Python 2.7.17 on CentOS 6 and set it as default through pyenv
Install Ganglia from repository on Amazon Linux, Amazon Linux 2, CentOS 6 and CentOS 7
Disable StrictHostKeyChecking for SSH client when target host is inside cluster VPC for all OSs except CentOS 6
Pin Intel Python 2 and Intel Python 3 to version 2019.4
Automatically disable ptrace protection on Ubuntu 18.04 and Ubuntu 16.04 compute nodes when EFA is enabled. This is required in order to use local memory for interprocess communications in Libfabric provider as mentioned here: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/efa-start.html#efa-start-ptrace
Packer version >= 1.4.0 is required for AMI creation
Use version 5.2 of PyYAML for python 3 versions of 3.4 or earlier.

BUG FIXES

Fix issue with slurmd daemon not being restarted correctly when a compute node is rebooted
Fix errors causing Torque not able to locate jobs, setting server_name to fqdn on master node
Fix Torque issue that was limiting the max number of running jobs to the max size of the cluster
Fix OS validation depending on the configured scheduler

2.5.1

ENHANCEMENTS

Add --show-url flag to pcluster dcv connect command in order to generate a one-time URL that can be used to start a DCV session. This unblocks the usage of DCV when the browser cannot be launched automatically.

CHANGES

Upgrade NVIDIA driver to Tesla version 440.33.01.
Upgrade CUDA library to version 10.2.
Using a Placement Group is not required anymore but highly recommended when enabling EFA.
Increase default root volume size in Centos 6 AMI to 25GB.
Increase the retention of CloudWatch logs produced when generating AWS Batch Docker images from 1 to 14 days.
Increase the total time allowed to build Docker images from 20 minutes to 30 minutes. This is done to better deal with slow networking in China regions.
Upgrade EFA installer to version 1.7.1:
- Kernel module: efa-1.4.1
- RDMA core: rdma-core-25.0
- Libfabric: libfabric-aws-1.8.1amzn1.3
- Open MPI: openmpi40-aws-4.0.2

BUG FIXES

Fix installation of NVIDIA drivers on Ubuntu 18.
Fix installation of CUDA toolkit on Centos 6.
Fix invalid default value for spot_price.
Fix issue that was preventing the cluster from being created in VPCs configured with multiple CIDR blocks.
Correctly handle failures when retrieving ASG in pcluster instances command.
Fix the default mount dir when a single EBS volume is specified through a dedicated ebs configuration section.
Correctly handle failures when there is an invalid parameter in the aws config section.
Fix a bug in pcluster delete that was causing the cli to exit with error when the cluster is successfully deleted.
Exit with status code 1 if pcluster create fails to create a stack.
Better handle the case of multiple or no network interfaces on FSX filesystems.
Fix pcluster configure to retain default values from old config file.
Fix bug in sqswatcher that was causing the daemon to fail when more than 100 DynamoDB tables are present in the cluster region.
Fix installation of Munge on Amazon Linux, Centos 6, Centos 7 and Ubuntu 16.

2.5.0

ENHANCEMENTS

Add support for new OS: Ubuntu 18.04
Add support for AWS Batch scheduler in China partition and in eu-north-1.
Revamped pcluster configure command which now supports automated networking configuration.
Add support for NICE DCV on Centos 7 to setup a graphical remote desktop session on the Master node.
Add support for new EFA supported instances: c5n.metal, m5dn.24xlarge, m5n.24xlarge, r5dn.24xlarge, r5n.24xlarge
Add support for scheduling with GPU options in Slurm. Currently supports the following GPU-related options: —G/——gpus, ——gpus-per-task, ——gpus-per-node, ——gres=gpu, ——cpus-per-gpu. Integrated GPU requirements into scaling logic, cluster will scale automatically to satisfy GPU/CPU requirements for pending jobs. When submitting GPU jobs, CPU/node/task information is not required but preferred in order to avoid ambiguity. If only GPU requirements are specified, cluster will scale up to the minimum number of nodes required to satisfy all GPU requirements.
Add new cluster configuration option to automatically disable Hyperthreading (disable_hyperthreading = true)
Install Intel Parallel Studio 2019.5 Runtime in Centos 7 when enable_intel_hpc_platform = true and share /opt/intel over NFS
Additional EC2 IAM Policies can now be added to the role ParallelCluster automatically creates for cluster nodes by simply specifying additional_iam_policies in the cluster config.

CHANGES

Ubuntu 14.04 is no longer supported
Upgrade Intel MPI to version U5.
Upgrade EFA Installer to version 1.7.0, this also upgrades Open MPI to 4.0.2.
Upgrade NVIDIA driver to Tesla version 418.87.
Upgrade CUDA library to version 10.1.
Upgrade Slurm to version 19.05.3-2.
Install EFA in China AMIs.
Increase default EBS volume size from 17GB to 25GB
FSx Lustre now supports new storage_capacity options 1,200 and 2,400 GiB
Enable flock user_xattr noatime Lustre mount options by default everywhere and x-systemd.automount x-systemd.requires=lnet.service for systemd based systems.
Increase the number of hosts that can be processed by scaling daemons in a single batch from 50 to 200. This improves the scaling time especially with increased ASG launch rates.
Change default sshd config in order to disable X11 forwarding and update the list of supported ciphers.
Increase faulty node termination timeout from 1 minute to 5 in order to give some additional time to the scheduler to recover when under heavy load.
Extended pcluster createami command to specify the VPC and network settings when building the AMI.
Support inline comments in config file
Support Python 3.8 in pcluster CLI.
Deprecate Python 2.6 support
Add ClusterName tag to EC2 instances.
Search for new available version only at pcluster create action.
Enable sanity_check by default.

BUG FIXES

Fix sanity check for custom ec2 role. Fixes #1241.
Fix bug when using same subnet for both master and compute.
Fix bug when ganglia is enabled ganglia urls are shown. Fixes #1322.
Fix bug with awsbatch scheduler that prevented Multi-node jobs from running.
Fix jobwatcher behaviour that was marking nodes locked by the nodewatcher as busy even if they had been removed already from the ASG Desired count. This was causing, in rare circumstances, a cluster overscaling.
Fix bug that was causing failures in sqswatcher when ADD and REMOVE event for the same host are fetched together.
Fix bug that was preventing nodes to mount partitioned EBS volumes.
Implement paginated calls in pcluster list.
Fix bug when creating awsbatch cluster with name longer than 31 chars
Fix a bug that lead to ssh not working after ssh'ing into a compute node by ip address.

2.4.1

ENHANCEMENTS

Add support for ap-east-1 region (Hong Kong)
Add possibility to specify instance type to use when building custom AMIs with pcluster createami
Speed up cluster creation by having compute nodes starting together with master node. Note this requires one new IAM permissions in the ParallelClusterInstancePolicy, cloudformation:DescribeStackResource
Enable ASG CloudWatch metrics for the ASG managing compute nodes. Note this requires two new IAM permissions in the ParallelClusterUserPolicy, autoscaling:DisableMetricsCollection and autoscaling:EnableMetricsCollection
Install Intel MPI 2019u4 on Amazon Linux, Centos 7 and Ubuntu 1604
Upgrade Elastic Fabric Adapter (EFA) to version 1.4.1 that supports Intel MPI
Run all node daemons and cookbook recipes in isolated Python virtualenvs. This allows our code to always run with the required Python dependencies and solves all conflicts and runtime failures that were being caused by user packages installed in the system Python
Torque:
- Process nodes added to or removed from the cluster in batches in order to speed up cluster scaling
- Scale up only if required CPU/nodes can be satisfied
- Scale down if pending jobs have unsatisfiable CPU/nodes requirements
- Add support for jobs in hold/suspended state (this includes job dependencies)
- Automatically terminate and replace faulty or unresponsive compute nodes
- Add retries in case of failures when adding or removing nodes
- Add support for ncpus reservation and multi nodes resource allocation (e.g. -l nodes=2:ppn=3+3:ppn=6)
- Optimized Torque global configuration to faster react to the dynamic cluster scaling

CHANGES

Update EFA installer to a new version, note this changes the location of mpicc and mpirun. To avoid breaking existing code, we recommend you use the modulefile module load openmpi and which mpicc for anything that requires the full path
Eliminate Launch Configuration and use Launch Templates in all the regions
Torque: upgrade to version 6.1.2
Run all ParallelCluster daemons with Python 3.6 in a virtualenv. Daemons code now supports Python >= 3.5

BUG FIXES

Fix issue with sanity check at creation time that was preventing clusters from being created in private subnets
Fix pcluster configure when relative config path is used
Make FSx Substack depend on ComputeSecurityGroupIngress to keep FSx from trying to create prior to the SG allowing traffic within itself
Restore correct value for filehandle_limit that was getting reset when setting memory_limit for EFA
Torque: fix compute nodes locking mechanism to prevent job scheduling on nodes being terminated
Restore logic that was automatically adding compute nodes identity to SSH known_hosts file
Slurm: fix issue that was causing the ParallelCluster daemons to fail when the cluster is stopped and an empty compute nodes file is imported in Slurm config

2.4.0

ENHANCEMENTS

Add support for EFA on Centos 7, Amazon Linux and Ubuntu 1604
Add support for Ubuntu in China region cn-northwest-1
SGE:
- process nodes added to or removed from the cluster in batches in order to speed up cluster scaling.
- scale up only if required slots/nodes can be satisfied
- scale down if pending jobs have unsatisfiable CPU/nodes requirements
- add support for jobs in hold/suspended state (this includes job dependencies)
- automatically terminate and replace faulty or unresponsive compute nodes
- add retries in case of failures when adding or removing nodes
- configure scheduler to handle rescheduling and cancellation of jobs running on failing or terminated nodes
Slurm:
- scale up only if required slots/nodes can be satisfied
- scale down if pending jobs have unsatisfiable CPU/nodes requirements
- automatically terminate and replace faulty or unresponsive compute nodes
- decrease SlurmdTimeout to 120 seconds to speed up replacement of faulty nodes
Automatically replace compute instances that fail initialization and dump logs to shared home directory.
Dynamically fetch compute instance type and cluster size in order to support updates in scaling daemons
Always use full master FQDN when mounting NFS on compute nodes. This solves some issues occurring with some networking setups and custom DNS configurations
List the version and status during pcluster list
Remove double quoting of the post_install args
awsbsub: use override option to set the number of nodes rather than creating multiple JobDefinitions
Add support for AWS_PCLUSTER_CONFIG_FILE env variable to specify pcluster config file

CHANGES

Update openmpi library to version 3.1.4 on Centos 7, Amazon Linux and Ubuntu 1604. This also changes the default openmpi path to /opt/amazon/efa/bin/ and the openmpi module name to openmpi/3.1.4
Set soft and hard ulimit on open files to 10000 for all supported OSs
For a better security posture, we're removing AWS credentials from the parallelcluster config file Credentials can be now setup following the canonical procedure used for the aws cli
When using FSx or EFS do not enforce in sanity check that the compute security group is open to 0.0.0.0/0
When updating an existing cluster, the same template version is now used, no matter the pcluster cli version
SQS messages that fail to be processed in sqswatcher are now re-queued only 3 times and not forever
Reset nodewatcher idletime to 0 when the host becomes essential for the cluster (because of min size of ASG or because there are pending jobs in the scheduler queue)
SGE: a node is considered as busy when in one of the following states "u", "C", "s", "d", "D", "E", "P", "o". This allows a quick replacement of the node without waiting for the nodewatcher to terminate it.
Do not update DynamoDB table on cluster updates in order to avoid hitting strict API limits (1 update per day).

BUG FIXES

Fix issue that was preventing Torque from being used on Centos 7
Start node daemons at the end of instance initialization. The time spent for post-install script and node initialization is not counted as part of node idletime anymore.
Fix issue which was causing an additional and invalid EBS mount point to be added in case of multiple EBS
Install Slurm libpmpi/libpmpi2 that is distributed in a separate package since Slurm 17
pcluster ssh command now works for clusters with use_public_ips = false
Slurm: add "BeginTime", "NodeDown", "Priority" and "ReqNodeNotAvail" to the pending reasons that trigger a cluster scaling
Add a timeout on remote commands execution so that the daemons are not stuck if the compute node is unresponsive
Fix an edge case that was causing the nodewatcher to hang forever in case the node had become essential to the cluster during a call to self_terminate.
Fix pcluster start/stop commands when used with an awsbatch cluster

2.3.1

ENHANCEMENTS

Add support for FSx Lustre with Amazon Linux. In case of custom AMI, The kernel will need to be >= 4.14.104-78.84.amzn1.x86_64
Slurm
- set compute nodes to DRAIN state before removing them from cluster. This prevents the scheduler from submitting a job to a node that is being terminated.
- dynamically adjust max cluster size based on ASG settings
- dynamically change the number of configured FUTURE nodes based on the actual nodes that join the cluster. The max size of the cluster seen by the scheduler always matches the max capacity of the ASG.
- process nodes added to or removed from the cluster in batches. This speeds up cluster scaling which is able to react with a delay of less than 1 minute to variations in the ASG capacity.
- add support for job dependencies and pending reasons. The cluster won't scale up if the job cannot start due to an unsatisfied dependency.
- set ReturnToService=1 in scheduler config in order to recover instances that were initially marked as down due to a transient issue.
Validate FSx parameters. Fixes #896.

CHANGES

Slurm - Upgrade version to 18.08.6.2
NVIDIA - update drivers to version 418.56
CUDA - update toolkit to version 10.0
Increase default EBS volume size from 15GB to 17GB
Disabled updates to FSx File Systems, updates to most parameters would cause the filesystem, and all it's data, to be deleted

BUG FIXES

Cookbook wasn't fetched when custom_ami parameter specified in the config
Cfn-init is now fetched from us-east-1, this bug effected non-alinux custom ami's in regions other than us-east-1.
Account limit check not done for SPOT or AWS Batch Clusters
Account limit check fall back to master subnet. Fixes #910.
Boto3 upperbound removed

2.2.1

ENHANCEMENTS

Add support for FSx Lustre in Centos 7. In case of custom AMI, FSx Lustre is only supported with Centos 7.5 and Centos 7.6.
Check AWS EC2 instance account limits before starting cluster creation
Allow users to force job deletion with SGE scheduler

CHANGES

Set default value to compute for placement_group option
pcluster ssh: use private IP when the public one is not available
pcluster ssh: now works also when stack is not completed as long as the master IP is available
Remove unused dependency on awscli from ParallelCluster package

BUG FIXES

awsbsub: fix file upload with absolute path
pcluster ssh: fix issue that was preventing the command from working correctly when stack status is UPDATE_ROLLBACK_COMPLETE
Fix block device conversion to correctly attach EBS nvme volumes
Wait for Torque scheduler initialization before completing master node setup
pcluster version: now works also when no ParallelCluster config is present
Improve nodewatcher daemon logic to detect if a SGE compute node has running jobs

DOCS

Add documentation on how to use FSx Lustre
Add tutorial for encrypted EBS with a Custom KMS Key
Add ebs_kms_key_id to Configuration section

TESTING

Define a new framework to write and run ParallelCluster integration tests
Improve scaling integration tests to detect over-scaling
Implement integration tests for awsbatch scheduler
Implement integration tests for FSx Lustre file system

2.1.1

Add China regions cn-north-1 and cn-northwest-1

2.1.0

Add configuration for RAID 0 and 1 volumes
Add Elastic File System (EFS) support
Add AWS Batch Multinode Parallel jobs support
Add support for Stockholm region (eu-north-1)
Add --envand --env-blacklistoptions to the awsbsub command to export environment variables in the job environment
Add --input-fileoption to the awsbsub command to stage-in input files from the client
Add new PCLUSTER_JOB_S3_URL variable to the job execution environment pointing to the S3 URL used for job data stage-in/out
Add S3 URL for job data staging to the awsbstat -doutput
Add --working-dirand --parent-working-diroptions to the awsbsub command to specify the working-directory or the parent working directory for the job
Add CPUs and Memory information to the awsbhosts -dcommand

2.0.2

Add support for GovCloud East, us-gov-east-1 region
Fix regression with shared_dir parameter in the cluster configuration section.
bugfix:cfncluster-cookbook: Fix issue with jq on ubuntu1404 and centos6. Now using version 1.4.
bugfix:cfncluster-cookbook: Fix dependency issue with AWS CLI package on ubuntu1404.

2.0.1

Fix configure and createami commands

2.0.0

Rename CfnCluster to AWS ParallelCluster
Support multiple EBS Volumes
Add AWS Batch as a supported scheduler
Support Custom AMI's

1.6.1

Fix a bug in cfncluster configureintroduced in 1.6.0

1.6.0

Refactor scaling up to take into account the number of pending/requested jobs/slots and instance slots.
Refactor scaling down to scale down faster and take advantage of per-second billing.
Add scaledown_idletime parameter as part of scale-down refactoring
Lock hosts before termination to ensure removal of dead compute nodes from host list
Fix HTTP proxy support

1.5.4

Add option to disable ganglia extra_json = { "cfncluster" : { "ganglia_enabled" : "no" } }
Fix cfncluster updatebug
Set SGE Accounting summary to be true, this reports a single accounting record for a mpi job
Upgrade cfncluster-node to Boto3

1.5.3

Add support for GovCloud, us-gov-west-1 region

1.5.2

feature:cfncluster: Added ClusterUser as a stack output. This makes it easier to get the username of the head node.
feature:cfncluster: Added cfncluster ssh cluster_name, this allows you to easily ssh into your clusters. It allows arbitrary command execution and extra ssh flags to be provided after the command. See https://aws-parallelcluster.readthedocs.io/en/latest/commands.html#ssh
change:cfncluster: Moved global cli flags to the command specific flags. For example cfncluster --region us-east-1 createnow becomes cfncluster create --region us-east-1
bugfix:cfncluster-cookbook: Fix bug that prevented c5d/m5d instances from working
bugfix:cfncluster-cookbook: Set CPU as a consumable resource in slurm
bugfix:cfncluster-node: Fixed Slurm behavior to add CPU slots so multiple jobs can be scheduled on a single node

1.5.1

change:cfncluster: Added "ec2:DescribeVolumes" permissions to CfnClusterInstancePolicy
change:cfncluster: Removed YAML CloudFormation template, it can be generated by the https://github.com/awslabs/aws-cfn-template-flip tool
updates:cfncluster: Add support for eu-west-3 region
feature:cfncluster-cookbook: Added parameter to specify custom cfncluster-node package
bugfix:cfncluster: Fix --template-url command line parameter
bugfix:cfncluster-cookbook: Poll on EBS Volume attachment status
bugfix:cfncluster-cookbook: Fixed SLURM cron job to publish pending metric
bugfix:cfncluster-node: Fixed Torque behaviour when scaling up from an empty cluster

1.4.2

bugfix:cfncluster: Fix crash when base directory for config file does not exist
bugfix:cfncluster: Removed extraneous logging message at cfncluster invocation, re-enabled logging in ~/.cfncluster/cfncluster-cli.log
bugfix: cfncluster-node: Fix scaling issues with CentOS 6 clusters caused by incompatible dependencies.
updates:ami: Update all base AMIs to latest patch levels
updates:cfncluster-cookbook: Updated to cfncluster-cookbook-1.4.1

1.4.1

bugfix:cfncluster: Fix abort due to undefinied logger

1.4.0

change:cfncluster: cfncluster stopwill terminate compute instances, but not stop the master node.
feature:cfncluster: CfnCluster no longer maintains a whitelist of supported instance types, so new platforms are supported on day of launch (including C5).
bugfix:cfncluster-cookbook: Support for NVMe instance store
updates:ami: Update all base AMIs to latest patch levels
bugfix:cfncluster-node: Fixed long scaling times with SLURM

1.3.2

feature:cfncluster: Add support for r2.xlarge/t2.2xlarge, x1.16xlarge, r4., f1., and i3.* instance types
bugfix:cfncluster: Fix support for p2.2xlarge instance type
feature:cfncluster: Add support for eu-west-2, us-east-2, and ca-central-1 regions
updates:cfncluster-cookbook: Updated to cfncluster-cookbook-1.3.2
updates:ami: Update all base AMIs to latest patch levels
updates:cfncluster: Moved to Apache 2.0 license
updates:cfncluster: Support for Python 3

1.3.1

feature:ami: Added support for Ubuntu 16.04 LTS
feature:ami: Added NVIDIA 361.42 driver
feature:ami: Added CUDA 7.5
feature:cfncluster: Added support for tags in cluster section in the config
feature:cfncluster: Added support for stopping/starting a cluster
bugfix:cfncluster: Setting DYNAMIC for placement group sanity check fixed
bugfix:cfncluster: Support any type of script for pre/post install
updates:cfncluster-cookbook: Updated to cfncluster-cookbook-1.3.0
updates:cfncluster: Updated docs with more detailed CLI help
updates:cfncluster: Updated docs with development environment setup
updates:ami: Updated to Openlava 3.3.3
updates:ami: Updated to Slurm 16-05-3-1
updates:ami: Updated to Chef 12.13.30
updates:ami: Update all base AMIs to latest patch levels

1.2.1

bugfix:cfncluster-node: Use strings in command for sqswatcher on Python 2.6
updates:ami: Update all base AMIs to latest patch levels

1.2.0

bugfix:cfncluster-node: Correctly set slots per host for Openlava
updates:cfncluster-cookbook: Updated to cfncluster-cookbook-1.2.0
updates:ami: Updated to SGE 8.1.9
updates:ami: Updated to Openlava 3.1.3
updates:ami: Updated to Chef 12.8.1

1.1.0

feature:cfncluster: Support for dynamic placement groups

1.0.1

bugfix:cfncluster-node: Fix for nodes being disabled when maintain_initial_size is true

1.0.0

Official release of the CfnCluster 1.x CLI, templates and AMIs. Available in all regions except BJS, with support for Amazon Linux, CentOS 6 & 7 and Ubuntu 14.04 LTS. All AMIs are built via packer from the CfnCluster Cookbook project (https://github.com/aws/aws-parallelcluster-cookbook).

1.0.0-beta

This is a major update for CfnCluster. Boostrapping of the instances has moved from shell scripts into Chef receipes. Through the use of Chef, there is now wider base OS support, covering Amazon Linux, CentOS 6 & 7 and also Ubuntu. All AMIs are now created using the same receipes. All previously capabilites exisit and the changes should be non-instrusive.

0.0.22

updates:ami: Pulled latest CentOS6 errata
feature:cfncluster: Support for specifiying MasterServer and ComputeFleet root volume size
bugfix:cfncluster-node: Fix for SGE parallel job detection
bugfix:ami: Removed ZFS packages
bugfix:cfncluster-node: Fix torque node additon with pbs_server restart
updates:ami: Updated Chef client to 12.4.1 + berkshelf
bugfix:cfncluster: Only count pending jobs with status 'qw' (Kenneth Daily kmdaily@gmail.com)
bugfix::cli: Updated example config file (John Lilley johnbot@caltech.edu)
bugfix::cli: Fixed typo on scaling cooldown property (Nelson R Monserrate MonserrateNelson@JohnDeere.com)

0.0.21

feature:cfncluster: Support for dedicated tenancy
feature:cfncluster: Support for customer provided KMS keys (EBS and ephemeral)
updates:ami: Pulled latest CentOS6 errata
feature:cfncluster: Support for M4 instances

0.0.20

feature:cfncluster: Support for D2 instances
updates:ami: Pulled latest CentOS6 errata
updates:ami: Pulled latest cfncluster-node package
updates:ami: Pulled latest ec2-udev-rules package
updates:ami: Pulled latest NVIDIA driver 346.47
updates:ami: Removed cfncluster-kernel repo and packages
updates:ami: Updated Chef client to 12.2.1 + berkshelf

0.0.19

feature:cli: Added configure command; easy config setup
updates:docs: Addtional documentation for configuration options
updates:ami: Pulled latest CentOS6 errata
bugfix:cfncluster: Fixed issue with nodewatcher not scaling down

0.0.18

updates:ami: Custom CentOS 6 kernel repo added, support for >32 vCPUs
feature:ami: Chef 11.x client + berkshelf
feature:cfncluster: Support for S3 based pre/post install scripts
feature:cfncluster: Support for EBS shared directory variable
feature:cfncluster: Support for C4 instances
feature:cfncluster: Support for additional VPC security group
updates:ami: Pulled latest NVIDIA driver 340.65
feature:cli: Added support for version command
updates:cli: Removed unimplemented stop command from CLI

0.0.17

updates:ami: Pulled latest CentOS errata. Now CentOS 6.6.
updates:ami: Updated SGE to 8.1.6
updates:ami: Updates openlava to latest pull from GitHub
bugfix:ami: Fixed handling of HTTP(S) proxies
feature:ami: Moved sqswatcher and nodewatcher into Python package cfncluster-node

0.0.16

feature:cfncluster: Support for GovCloud region
updates:cli: Improved error messages parsing config file

0.0.15

feature:cfncluster: Support for Frankfurt region
feature:cli: status call now outputs CREATE_FAILED messages for stacks in error state
update:cli: Improved tags and extra_parameters on CLI
bugfix:cli: Only check config sanity on calls that mutate stack
updates:ami: Pulled latest CentOS errata

0.0.14

feature:cli: Introduced sanity_check feature for config
updates:cli: Simplified EC2 key pair config
feature:cfncluster: Scale up is now driven by two policies; enables small and large scaling steps
feature:cfnlcuster: Introduced initial support for CloudWatch logs in us-east-1
updates:ami: Moved deamon handling to supervisord
updates:ami: Pulled latest CentOS errata

0.0.13

bugfix:cli: Fixed missing AvailabilityZone for "update" command

0.0.12

updates:cli: Simplfied VPC config and removed multi-AZ

0.0.11

updates:ami: Pulled latest CentOS errata
updates:ami: Removed DKMS Lustre; replaced with Intel Lustre Client

0.0.10

updates:ami: Pulled latest CentOS errata
updates:ami: Updated packages to match base RHEL AMI's
feature:cli: Improved region handling and added support for AWS_DEFAULT_REGION

0.0.9

feature:cfncluster: Added s3_read_resource and s3_read_write_resource options to cluster config
feature:cfncluster: cfncluster is now available in all regions
updates:ami: Pulled latest CentOS errata
feature:cfncluster: Added ephemeral_dir option to cluster config

0.0.8

feature:cfncluster: Added support for new T2 instances
updates:cfncluster: Changed default instance sizes to t2.micro(free tier)
updates:cfncluster: Changed EBS volume default size to 20GB(free tier)
updates:ami: Pulled latest CentOS errata
bugfix:cfncluster: Fixed issues with install_type option(removed)

0.0.7

feature:cfncluster: Added option to encrypt ephemeral drives with in-memory keys
feature:cfncluster: Support for EBS encryption on /shared volume
feature:cfncluster: Detect all ephemeral drives, stripe and mount as /scratch
feature:cfncluster: Support for placement groups
feature:cfncluster: Support for cluster placement logic. Can either be cluster or compute.
feature:cfncluster: Added option to provides arguments to pre/post install scripts
feature:cfncluster: Added DKMS support for Lustre filesystems - http://zfsonlinux.org/lustre.html
bugfix:cli: Added missing support from SSH from CIDR range
bugfix:cfncluster: Fixed Ganglia setup for ComputeFleet
updates:SGE: Updated to 8.1.7 - https://arc.liv.ac.uk/trac/SGE
updates:Openlava: Updated to latest Git for Openlava 2.2 - https://github.com/openlava/openlava

0.0.6

feature:Amazon EBS: Added support for Amazon EBS General Pupose(SSD) Volumes; both AMI and /shared
bugfix:cli: Fixed boto.exception.NoAuthHandlerFound when using credentials in config
updates:CentOS: Pulled in latest errata to AMI. See amis.txt for latest ID's.

0.0.5

Release on GitHub and PyPi

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