[torch.compile] Make inductor partition rules respect splitting_ops #25691 #25845

baonudesifeizhai · 2025-09-28T22:01:52Z

Key Changes

Preserve user-specified splitting_ops: When use_inductor_graph_partition=True, user-provided splitting_ops are now preserved in _user_specified_splitting_ops instead of being cleared
Dynamic partition rules: Implement _setup_dynamic_partition_rules() using PyTorch 2.9+'s register_should_partition_rule API to register custom partition points
Robust fallback mechanism: If dynamic rule registration fails for any user-specified operation, the system falls back to traditional splitting behavior with preserved splitting_ops
Comprehensive logging: Add detailed debug logging to track partition rule setup, registration success/failure, and fallback behavior
PyTorch version compatibility: Update requirements to support PyTorch 2.10.0.dev20250927+cu128 for the new partition rule API

Technical Implementation

Operation mapping: Map user-provided splitting_ops (including aliases like "flash_attention") to torch._ops.OpOverload objects
Rule registration: Use register_should_partition_rule(op_overload, partition_function) for each resolved operation
Duplicate prevention: Track registered overloads globally to prevent duplicate registrations
Alias resolution: Handle common operation aliases (e.g., "flash_attention" → "vllm.unified_attention")

Test Plan

Unit Tests

Updated test_splitting_ops_dynamic() to verify splitting_ops preservation behavior
Added comprehensive test coverage for dynamic partition rule setup
Updated existing compilation tests to reflect new default behavior

Integration Tests

Test with various splitting_ops configurations:

python -m vllm.entrypoints.openai.api_server \
  --model Qwen/Qwen2.5-7B-Instruct \
  --compilation-config '{"use_inductor_graph_partition": true, "splitting_ops": ["flash_attention", "addmm", "aten.bmm.default"]}' \
  --host 0.0.0.0 --port 8000

Verify fallback behavior when PyTorch version doesn't support dynamic rules
Test with mixed resolvable/unresolvable operations

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The test results, such as pasting the results comparison before and after, or e2e results
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- Add _user_specified_splitting_ops field to store user configuration - Modify set_splitting_ops_for_inductor_graph_partition to respect user settings - Add debug logging to track splitting_ops handling - Addresses issue vllm-project#25691 - partial implementation for dynamic partitioning This change preserves user-specified splitting_ops when use_inductor_graph_partition=True, laying groundwork for future PyTorch 2.9+ register_should_partition_rule integration.

…ion-rules

- Add _setup_dynamic_partition_rules() method - Implement register_should_partition_rule integration - Support both attention ops and user-specified splitting_ops - Add comprehensive debug logging for partition decisions - Graceful fallback if PyTorch API not available This completes the implementation for issue vllm-project#25691

mergify · 2025-10-10T07:38:49Z

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @baonudesifeizhai.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

Signed-off-by: baonudesifeizhai <85092850+baonudesifeizhai@users.noreply.github.com>

tests/compile/piecewise/test_simple.py

Co-authored-by: Luka Govedič <ProExpertProg@users.noreply.github.com> Signed-off-by: baonudesifeizhai <85092850+baonudesifeizhai@users.noreply.github.com>

Signed-off-by: Huy Do <huydhn@gmail.com>

…llm-project#25691 (vllm-project#25845) Signed-off-by: baonudesifeizhai <baonudesifeizhai@gmail.com> Signed-off-by: baonudesifeizhai <85092850+baonudesifeizhai@users.noreply.github.com> Co-authored-by: Luka Govedič <ProExpertProg@users.noreply.github.com> Signed-off-by: Dhruvil Bhatt <bhattdbh@amazon.com>

…llm-project#25691 (vllm-project#25845) Signed-off-by: baonudesifeizhai <baonudesifeizhai@gmail.com> Signed-off-by: baonudesifeizhai <85092850+baonudesifeizhai@users.noreply.github.com> Co-authored-by: Luka Govedič <ProExpertProg@users.noreply.github.com> Signed-off-by: bbartels <benjamin@bartels.dev>

…llm-project#25691 (vllm-project#25845) Signed-off-by: baonudesifeizhai <baonudesifeizhai@gmail.com> Signed-off-by: baonudesifeizhai <85092850+baonudesifeizhai@users.noreply.github.com> Co-authored-by: Luka Govedič <ProExpertProg@users.noreply.github.com>

### What this PR does / why we need it? This is the step 1 of refactoring code to adapt with vllm main, and this pr aligned with vllm-project/vllm@17c540a 1. refactor deepseek to the latest code arch as of vllm-project/vllm@17c540a 2. bunches of fixes due to vllm changes - Fix `AscendScheduler` `__post_init__`, caused by vllm-project/vllm#25075 - Fix `AscendScheduler` init got an unexpected arg `block_size`, caused by vllm-project/vllm#26296 - Fix `KVCacheManager` `get_num_common_prefix_blocks` arg, caused by vllm-project/vllm#23485 - Fix `MLAAttention` import,caused by vllm-project/vllm#25103 - Fix `SharedFusedMoE` import, caused by vllm-project/vllm#26145 - Fix `LazyLoader` improt, caused by vllm-project/vllm#27022 - Fix `vllm.utils.swap_dict_values` improt, caused by vllm-project/vllm#26990 - Fix `Backend` enum import, caused by vllm-project/vllm#25893 - Fix `CompilationLevel` renaming to `CompilationMode` issue introduced by vllm-project/vllm#26355 - Fix fused_moe ops, caused by vllm-project/vllm#24097 - Fix bert model because of `inputs_embeds`, caused by vllm-project/vllm#25922 - Fix MRope because of `get_input_positions_tensor` to `get_mrope_input_positions`, caused by vllm-project/vllm#24172 - Fix `splitting_ops` changes introduced by vllm-project/vllm#25845 - Fix multi-modality changes introduced by vllm-project/vllm#16229 - Fix lora bias dropping issue introduced by vllm-project/vllm#25807 - Fix structured ouput break introduced by vllm-project/vllm#26737 ### Does this PR introduce _any_ user-facing change? ### How was this patch tested? CI passed with existing test. - vLLM version: v0.11.0rc3 - vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.0 --------- Signed-off-by: MengqingCao <cmq0113@163.com> Signed-off-by: Icey <1790571317@qq.com> Co-authored-by: Icey <1790571317@qq.com>

…llm-project#25691 (vllm-project#25845) Signed-off-by: baonudesifeizhai <baonudesifeizhai@gmail.com> Signed-off-by: baonudesifeizhai <85092850+baonudesifeizhai@users.noreply.github.com> Co-authored-by: Luka Govedič <ProExpertProg@users.noreply.github.com> Signed-off-by: xuebwang-amd <xuebwang@amd.com>

…llm-project#25691 (vllm-project#25845) Signed-off-by: baonudesifeizhai <baonudesifeizhai@gmail.com> Signed-off-by: baonudesifeizhai <85092850+baonudesifeizhai@users.noreply.github.com> Co-authored-by: Luka Govedič <ProExpertProg@users.noreply.github.com> Signed-off-by: 0xrushi <6279035+0xrushi@users.noreply.github.com>

baonudesifeizhai and others added 19 commits September 26, 2025 20:15

Merge branch 'vllm-project:main' into feature/dynamic-inductor-partit…

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baonudesifeizhai requested review from ProExpertProg, WoosukKwon, hmellor, houseroad, mgoin, robertgshaw2-redhat, simon-mo, tlrmchlsmth, yewentao256 and youkaichao as code owners September 28, 2025 22:01

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baonudesifeizhai force-pushed the feature/dynamic-inductor-partition-rules branch from 263f0b6 to 56ae27d Compare October 10, 2025 07:37

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Merge branch 'main' into feature/dynamic-inductor-partition-rules

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mergify bot removed the needs-rebase label Oct 10, 2025

baonudesifeizhai added 2 commits October 10, 2025 03:56

change for test_config.py remove unused funciton

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node.target can be OpOverloadPacket, need to check .default

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Update tests/compile/piecewise/test_simple.py

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Co-authored-by: Luka Govedič <ProExpertProg@users.noreply.github.com> Signed-off-by: baonudesifeizhai <85092850+baonudesifeizhai@users.noreply.github.com>

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ProExpertProg changed the title ~~Feature/dynamic inductor partition rules #25691~~ [torch.compile] Make inductor partition rules respect splitting_ops #25691 Oct 10, 2025

ProExpertProg merged commit cddce79 into vllm-project:main Oct 10, 2025
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github-project-automation bot moved this from In review to Done in torch.compile integration Oct 10, 2025

huydhn added a commit to pytorch/pytorch that referenced this pull request Oct 11, 2025

Avoid vllm-project/vllm#25845

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Signed-off-by: Huy Do <huydhn@gmail.com>

ProExpertProg mentioned this pull request Oct 11, 2025

[compile] Fix inductor partition config #26645

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huydhn mentioned this pull request Oct 12, 2025

[vllm hash update] update the pinned vllm hash pytorch/pytorch#164628

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huydhn added a commit to huydhn/pytorch that referenced this pull request Oct 12, 2025

Update vLLM pinned commit to vllm-project/vllm#25845

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angelayi mentioned this pull request Oct 13, 2025

[Bug]: use_inductor_partition + splitting_ops results in AssertionError #26678

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BoyuanFeng mentioned this pull request Oct 16, 2025

[torch.compile] fix simple inductor graph partition test #27050

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MengqingCao mentioned this pull request Oct 22, 2025

[1/N][Refactor] Refactor code to adapt with vllm main vllm-project/vllm-ascend#3612

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Key Changes

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