Make sure that nested `tuple` and `pair` have the expected size #5246

miscco · 2025-07-14T11:15:30Z

We were inheriting from a base class that was not unique to the instance of the tuple

That lead the compiler to assign padding for it.

We need to make sure that the SFINAE helper class is unique the the instantiated tuple

Fixes #5226

libcudacxx/test/libcudacxx/std/utilities/tuple/tuple.tuple/tuple.assign/convert_move.pass.cpp

libcudacxx/test/libcudacxx/std/utilities/utility/pairs/pairs.general/sizeof.pass.cpp

github-actions · 2025-07-15T08:53:28Z

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  🟩 GCC                Pass: 100%/12  | Total:  3h 35m | Avg: 17m 58s | Max: 24m 03s | Hits:  58%/7478  
  🟩 MSVC               Pass: 100%/4   | Total:  1h 00m | Avg: 15m 02s | Max: 15m 25s | Hits:  47%/1294  
  🟩 NVHPC              Pass: 100%/2   | Total:  1h 09m | Avg: 34m 51s | Max: 34m 54s | Hits:  26%/1242  
🟩 gpu
  🟩 h100               Pass: 100%/2   | Total: 22m 59s | Avg: 11m 29s | Max: 15m 37s | Hits:  74%/1246  
  🟩 rtx2080            Pass: 100%/26  | Total:  8h 12m | Avg: 18m 55s | Max: 34m 54s | Hits:  52%/15000 
🟩 jobs
  🟩 Build              Pass: 100%/25  | Total:  8h 07m | Avg: 19m 30s | Max: 34m 54s | Hits:  47%/14377 
  🟩 Test               Pass: 100%/3   | Total: 27m 28s | Avg:  9m 09s | Max: 11m 49s | Hits:  99%/1869  
🟩 sm
  🟩 90                 Pass: 100%/2   | Total: 22m 59s | Avg: 11m 29s | Max: 15m 37s | Hits:  74%/1246  
  🟩 90;90a             Pass: 100%/2   | Total: 34m 20s | Avg: 17m 10s | Max: 18m 55s | Hits:  48%/947   
  🟩 100;120            Pass: 100%/2   | Total: 31m 28s | Avg: 15m 44s | Max: 17m 14s | Hits:  48%/947   
🟩 std
  🟩 17                 Pass: 100%/3   | Total:  1h 08m | Avg: 22m 51s | Max: 34m 49s | Hits:  42%/1867  
  🟩 20                 Pass: 100%/25  | Total:  7h 26m | Avg: 17m 51s | Max: 34m 54s | Hits:  55%/14379

🟩 python: Pass: 100%/18 | Total: 3h 16m | Avg: 10m 53s | Max: 23m 13s

🟩 cpu
  🟩 amd64              Pass: 100%/18  | Total:  3h 16m | Avg: 10m 53s | Max: 23m 13s
🟩 ctk
  🟩 12.9               Pass: 100%/18  | Total:  3h 16m | Avg: 10m 53s | Max: 23m 13s
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/18  | Total:  3h 16m | Avg: 10m 53s | Max: 23m 13s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/18  | Total:  3h 16m | Avg: 10m 53s | Max: 23m 13s
🟩 cxx
  🟩 GCC13              Pass: 100%/18  | Total:  3h 16m | Avg: 10m 53s | Max: 23m 13s
🟩 cxx_family
  🟩 GCC                Pass: 100%/18  | Total:  3h 16m | Avg: 10m 53s | Max: 23m 13s
🟩 gpu
  🟩 h100               Pass: 100%/8   | Total:  1h 18m | Avg:  9m 50s | Max: 16m 57s
  🟩 rtxa6000           Pass: 100%/10  | Total:  1h 57m | Avg: 11m 44s | Max: 23m 13s
🟩 jobs
  🟩 Build cuda.cccl    Pass: 100%/2   | Total: 20m 37s | Avg: 10m 18s | Max: 10m 43s
  🟩 Test cuda.cccl.cooperative Pass: 100%/4   | Total:  1h 10m | Avg: 17m 37s | Max: 23m 13s
  🟩 Test cuda.cccl.examples Pass: 100%/4   | Total: 18m 12s | Avg:  4m 33s | Max:  4m 37s
  🟩 Test cuda.cccl.headers Pass: 100%/4   | Total: 19m 14s | Avg:  4m 48s | Max:  5m 40s
  🟩 Test cuda.cccl.parallel Pass: 100%/4   | Total:  1h 07m | Avg: 16m 53s | Max: 17m 28s
🟩 py_version
  🟩 3.10               Pass: 100%/9   | Total:  1h 38m | Avg: 10m 53s | Max: 22m 35s
  🟩 3.13               Pass: 100%/9   | Total:  1h 38m | Avg: 10m 54s | Max: 23m 13s

🟩 packaging: Pass: 100%/4 | Total: 19m 52s | Avg: 4m 58s | Max: 5m 55s

🟩 cpu
  🟩 amd64              Pass: 100%/4   | Total: 19m 52s | Avg:  4m 58s | Max:  5m 55s
🟩 ctk
  🟩 12.0               Pass: 100%/2   | Total:  9m 16s | Avg:  4m 38s | Max:  4m 45s
  🟩 12.9               Pass: 100%/2   | Total: 10m 36s | Avg:  5m 18s | Max:  5m 55s
🟩 cudacxx
  🟩 nvcc12.0           Pass: 100%/2   | Total:  9m 16s | Avg:  4m 38s | Max:  4m 45s
  🟩 nvcc12.9           Pass: 100%/2   | Total: 10m 36s | Avg:  5m 18s | Max:  5m 55s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 19m 52s | Avg:  4m 58s | Max:  5m 55s
🟩 cxx
  🟩 Clang14            Pass: 100%/1   | Total:  4m 31s | Avg:  4m 31s | Max:  4m 31s
  🟩 Clang19            Pass: 100%/1   | Total:  4m 41s | Avg:  4m 41s | Max:  4m 41s
  🟩 GCC12              Pass: 100%/1   | Total:  4m 45s | Avg:  4m 45s | Max:  4m 45s
  🟩 GCC13              Pass: 100%/1   | Total:  5m 55s | Avg:  5m 55s | Max:  5m 55s
🟩 cxx_family
  🟩 Clang              Pass: 100%/2   | Total:  9m 12s | Avg:  4m 36s | Max:  4m 41s
  🟩 GCC                Pass: 100%/2   | Total: 10m 40s | Avg:  5m 20s | Max:  5m 55s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 19m 52s | Avg:  4m 58s | Max:  5m 55s
🟩 jobs
  🟩 Test               Pass: 100%/4   | Total: 19m 52s | Avg:  4m 58s | Max:  5m 55s

🟩 stdpar: Pass: 100%/4 | Total: 15m 57s | Avg: 3m 59s | Max: 4m 14s

🟩 cpu
  🟩 amd64              Pass: 100%/2   | Total:  8m 18s | Avg:  4m 09s | Max:  4m 14s
  🟩 arm64              Pass: 100%/2   | Total:  7m 39s | Avg:  3m 49s | Max:  3m 52s
🟩 ctk
  🟩 12.9               Pass: 100%/4   | Total: 15m 57s | Avg:  3m 59s | Max:  4m 14s
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/4   | Total: 15m 57s | Avg:  3m 59s | Max:  4m 14s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 15m 57s | Avg:  3m 59s | Max:  4m 14s
🟩 cxx
  🟩 NVHPC25.5          Pass: 100%/4   | Total: 15m 57s | Avg:  3m 59s | Max:  4m 14s
🟩 cxx_family
  🟩 NVHPC              Pass: 100%/4   | Total: 15m 57s | Avg:  3m 59s | Max:  4m 14s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 15m 57s | Avg:  3m 59s | Max:  4m 14s
🟩 jobs
  🟩 Build              Pass: 100%/4   | Total: 15m 57s | Avg:  3m 59s | Max:  4m 14s
🟩 std
  🟩 17                 Pass: 100%/2   | Total:  7m 56s | Avg:  3m 58s | Max:  4m 04s
  🟩 20                 Pass: 100%/2   | Total:  8m 01s | Avg:  4m 00s | Max:  4m 14s

🟩 cccl_c_parallel: Pass: 100%/3 | Total: 26m 14s | Avg: 8m 44s | Max: 14m 19s | Hits: 98%/495

🟩 cpu
  🟩 amd64              Pass: 100%/3   | Total: 26m 14s | Avg:  8m 44s | Max: 14m 19s | Hits:  98%/495   
🟩 ctk
  🟩 12.9               Pass: 100%/3   | Total: 26m 14s | Avg:  8m 44s | Max: 14m 19s | Hits:  98%/495   
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/3   | Total: 26m 14s | Avg:  8m 44s | Max: 14m 19s | Hits:  98%/495   
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/3   | Total: 26m 14s | Avg:  8m 44s | Max: 14m 19s | Hits:  98%/495   
🟩 cxx
  🟩 GCC13              Pass: 100%/3   | Total: 26m 14s | Avg:  8m 44s | Max: 14m 19s | Hits:  98%/495   
🟩 cxx_family
  🟩 GCC                Pass: 100%/3   | Total: 26m 14s | Avg:  8m 44s | Max: 14m 19s | Hits:  98%/495   
🟩 gpu
  🟩 h100               Pass: 100%/1   | Total: 14m 19s | Avg: 14m 19s | Max: 14m 19s | Hits:  98%/165   
  🟩 rtx2080            Pass: 100%/2   | Total: 11m 55s | Avg:  5m 57s | Max:  9m 33s | Hits:  98%/330   
🟩 jobs
  🟩 Build              Pass: 100%/1   | Total:  2m 22s | Avg:  2m 22s | Max:  2m 22s | Hits:  98%/165   
  🟩 Test               Pass: 100%/2   | Total: 23m 52s | Avg: 11m 56s | Max: 14m 19s | Hits:  98%/330

👃 Inspect Changes

Modifications in project?

	Project
	CCCL Infrastructure
	CCCL Packaging
+/-	libcu++
	CUB
	Thrust
	CUDA Experimental
	stdpar
	python
	CCCL C Parallel Library
	Catch2Helper

Modifications in project or dependencies?

	Project
	CCCL Infrastructure
+/-	CCCL Packaging
+/-	libcu++
+/-	CUB
+/-	Thrust
+/-	CUDA Experimental
+/-	stdpar
+/-	python
+/-	CCCL C Parallel Library
+/-	Catch2Helper

🏃‍ Runner counts (total jobs: 205)

#	Runner
128	`linux-amd64-cpu16`
23	`windows-amd64-cpu16`
14	`linux-amd64-gpu-h100-latest-1`
14	`linux-amd64-gpu-rtxa6000-latest-1`
12	`linux-arm64-cpu16`
11	`linux-amd64-gpu-rtx2080-latest-1`
3	`linux-amd64-gpu-rtx4090-latest-1`

…IA#5246)

… (#5265)

tomilov · 2025-07-17T14:00:49Z

What is the expected time to market of the fixes? When they will be added in CUDA installer?

bernhardmgruber · 2025-07-17T14:09:48Z

What is the expected time to market of the fixes? When they will be added in CUDA installer?

The changes will ship in CCCCL 3.1, which is scheduled for CUDA Toolkit 13.1. We don't know when they will ship. In the meantime, you can use CCCL from GitHub directly. See here.

miscco · 2025-07-17T14:37:16Z

actually we have backported them to the 3.0 release branch, whenever that may be

miscco requested a review from a team as a code owner July 14, 2025 11:15

miscco requested a review from bernhardmgruber July 14, 2025 11:15

github-project-automation bot added this to CCCL Jul 14, 2025

github-project-automation bot moved this to Todo in CCCL Jul 14, 2025

cccl-authenticator-app bot moved this from Todo to In Review in CCCL Jul 14, 2025

miscco requested a review from ericniebler July 14, 2025 11:15

bernhardmgruber reviewed Jul 14, 2025

View reviewed changes

libcudacxx/test/libcudacxx/std/utilities/tuple/tuple.tuple/tuple.assign/convert_move.pass.cpp Outdated Show resolved Hide resolved

libcudacxx/test/libcudacxx/std/utilities/utility/pairs/pairs.general/sizeof.pass.cpp Outdated Show resolved Hide resolved

bernhardmgruber approved these changes Jul 14, 2025

View reviewed changes

miscco force-pushed the fix_tuple_size branch 2 times, most recently from aa840fb to 5732a4d Compare July 14, 2025 14:20

miscco added 4 commits July 14, 2025 18:17

Expand testing of tuple by unique_ptr

c4c7804

Cleanup definition of __must_synthesize_assignment

b95fd90

Make sure that nested tuple and pair have the expected size

cea5748

Fix review comments

9419c5a

miscco force-pushed the fix_tuple_size branch from 5732a4d to 9419c5a Compare July 14, 2025 16:17

miscco merged commit df3dcf4 into NVIDIA:main Jul 15, 2025
404 of 429 checks passed

github-project-automation bot moved this from In Review to Done in CCCL Jul 15, 2025

miscco deleted the fix_tuple_size branch July 15, 2025 10:52

miscco added a commit to miscco/cccl that referenced this pull request Jul 15, 2025

Make sure that nested tuple and pair have the expected size (NVID…

396a3b7

…IA#5246)

miscco added a commit to miscco/cccl that referenced this pull request Jul 15, 2025

Make sure that nested tuple and pair have the expected size (NVID…

5c82941

…IA#5246)

miscco added a commit to miscco/cccl that referenced this pull request Jul 15, 2025

Make sure that nested tuple and pair have the expected size (NVID…

c1ef6de

…IA#5246)

miscco added a commit that referenced this pull request Jul 15, 2025

Make sure that nested tuple and pair have the expected size (#5246)…

aa9ea15

… (#5265)

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Make sure that nested `tuple` and `pair` have the expected size #5246

Make sure that nested `tuple` and `pair` have the expected size #5246

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miscco commented Jul 14, 2025

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github-actions bot commented Jul 15, 2025

🟩 cub: Pass: 100%/50 | Total: 1d 22h | Avg: 55m 48s | Max: 1h 40m | Hits: 70%/61706

🟩 thrust: Pass: 100%/50 | Total: 1d 07h | Avg: 37m 17s | Max: 1h 46m | Hits: 79%/95621

🟩 libcudacxx: Pass: 100%/48 | Total: 17h 23m | Avg: 21m 44s | Max: 1h 16m | Hits: 72%/164079

🟩 cudax: Pass: 100%/28 | Total: 8h 35m | Avg: 18m 24s | Max: 34m 54s | Hits: 53%/16246

🟩 python: Pass: 100%/18 | Total: 3h 16m | Avg: 10m 53s | Max: 23m 13s

🟩 packaging: Pass: 100%/4 | Total: 19m 52s | Avg: 4m 58s | Max: 5m 55s

🟩 stdpar: Pass: 100%/4 | Total: 15m 57s | Avg: 3m 59s | Max: 4m 14s

🟩 cccl_c_parallel: Pass: 100%/3 | Total: 26m 14s | Avg: 8m 44s | Max: 14m 19s | Hits: 98%/495

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Make sure that nested tuple and pair have the expected size #5246

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miscco commented Jul 14, 2025

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github-actions bot commented Jul 15, 2025

🟩 cub: Pass: 100%/50 | Total: 1d 22h | Avg: 55m 48s | Max: 1h 40m | Hits: 70%/61706

🟩 thrust: Pass: 100%/50 | Total: 1d 07h | Avg: 37m 17s | Max: 1h 46m | Hits: 79%/95621

🟩 libcudacxx: Pass: 100%/48 | Total: 17h 23m | Avg: 21m 44s | Max: 1h 16m | Hits: 72%/164079

🟩 cudax: Pass: 100%/28 | Total: 8h 35m | Avg: 18m 24s | Max: 34m 54s | Hits: 53%/16246

🟩 python: Pass: 100%/18 | Total: 3h 16m | Avg: 10m 53s | Max: 23m 13s

🟩 packaging: Pass: 100%/4 | Total: 19m 52s | Avg: 4m 58s | Max: 5m 55s

🟩 stdpar: Pass: 100%/4 | Total: 15m 57s | Avg: 3m 59s | Max: 4m 14s

🟩 cccl_c_parallel: Pass: 100%/3 | Total: 26m 14s | Avg: 8m 44s | Max: 14m 19s | Hits: 98%/495

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🏃‍ Runner counts (total jobs: 205)

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Make sure that nested `tuple` and `pair` have the expected size #5246

Make sure that nested `tuple` and `pair` have the expected size #5246