Fix regression from pointwise + multi-level reduction fusion #112297
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🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/112297
Note: Links to docs will display an error until the docs builds have been completed. ✅ You can merge normally! (2 Unrelated Failures)As of commit 4cf7b22 with merge base ac4cc5d ( FLAKY - The following jobs failed but were likely due to flakiness present on trunk:
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jansel
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xuhancn
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…#112297) In pytorch#111122, an optimization is introduced for reduction + pointwise + multi-level reduction fusion. The main idea of this optimization is to have the first-level reduction of the multi-level reduction reuses the reduction sizes of the first reduction kernel so that there are better chances that the first reduction kernel and the first-level reduction of the multi-level reduction kernel can be fused. However, it introduces a bug for pattern pointwise + multi-level reduction, where the first-level reduction kernel wrongly reuses the reduction ranges (which is []) from the previous pointwise kernel. This PR fixes this issue. Test plan: `python timm_models.py --training --amp --performance --only=dm_nfnet_f0 --inductor` Results before this PR: 0.869x Results after this PR: 1.232x Benchmark results:  <img width="1491" alt="Screenshot 2023-10-30 at 3 10 06 PM" src="https://github.com/pytorch/pytorch/assets/10527447/608d26ea-dcc5-4f2a-8700-4a928701392b"> Pull Request resolved: pytorch#112297 Approved by: https://github.com/jansel
Skylion007
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Nov 14, 2023
…#112297) In pytorch#111122, an optimization is introduced for reduction + pointwise + multi-level reduction fusion. The main idea of this optimization is to have the first-level reduction of the multi-level reduction reuses the reduction sizes of the first reduction kernel so that there are better chances that the first reduction kernel and the first-level reduction of the multi-level reduction kernel can be fused. However, it introduces a bug for pattern pointwise + multi-level reduction, where the first-level reduction kernel wrongly reuses the reduction ranges (which is []) from the previous pointwise kernel. This PR fixes this issue. Test plan: `python timm_models.py --training --amp --performance --only=dm_nfnet_f0 --inductor` Results before this PR: 0.869x Results after this PR: 1.232x Benchmark results:  <img width="1491" alt="Screenshot 2023-10-30 at 3 10 06 PM" src="https://github.com/pytorch/pytorch/assets/10527447/608d26ea-dcc5-4f2a-8700-4a928701392b"> Pull Request resolved: pytorch#112297 Approved by: https://github.com/jansel
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In #111122, an optimization is introduced for reduction + pointwise + multi-level reduction fusion. The main idea of this optimization is to have the first-level reduction of the multi-level reduction reuses the reduction sizes of the first reduction kernel so that there are better chances that the first reduction kernel and the first-level reduction of the multi-level reduction kernel can be fused. However, it introduces a bug for pattern pointwise + multi-level reduction, where the first-level reduction kernel wrongly reuses the reduction ranges (which is []) from the previous pointwise kernel. This PR fixes this issue.
Test plan:
python timm_models.py --training --amp --performance --only=dm_nfnet_f0 --inductorResults before this PR: 0.869x
Results after this PR: 1.232x
Benchmark results:
cc @voznesenskym @penguinwu @EikanWang @jgong5 @Guobing-Chen @XiaobingSuper @zhuhaozhe @blzheng @wenzhe-nrv @jiayisunx @peterbell10 @yf225 @chenyang78 @kadeng @muchulee8 @aakhundov @ColinPeppler