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[TRTLLM-16394][refactor] Consolidate and group the cpp MoE torch ops under thop/moe/ - #19216
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Move moeOp.cpp to thop/moe/cutlass/, the four TRTLLM-Gen block-scale ops to trtllmGen/, cuteDslMoeUtilsOp.cpp to cuteDsl/ and marlinNvfp4MoeMM.cpp to marlin/, mirroring kernels/moe/. Position changes only; th_common's source list in thop/CMakeLists.txt follows. Signed-off-by: Lori Ren <lorir@nvidia.com>
Move the all-to-all, fused-comm and prepare ops (with moeAlltoAllMeta.h) to thop/moe/communication/, the EPLB op to loadBalance/, the two routing ops to routing/ and the align/permute helpers to utils/. Rewrites the two includes of moeAlltoAllMeta.h and the eight th_common source paths; no other line changes. Signed-off-by: Lori Ren <lorir@nvidia.com>
…layout (3/3) Seven path literals in comments and casebook notes, plus the thop/moe/ row of the C++ file map in MOE_DEVELOPER_GUIDE.md. The SHA-pinned permalink in trtllm_moe.py keeps its historical path. Signed-off-by: Lori Ren <lorir@nvidia.com>
…ten casebook lines The four casebook lines touched by 3/3 also named fused_moe_wide_ep.py and _torch/modules/fused_moe.py, which left the tree before this move; point them at the files that hold those symbols today, as NVIDIA#19061 review asked for its equivalents. Signed-off-by: Lori Ren <lorir@nvidia.com>
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Included review availability: Your plan provides up to 12 included reviews per hour; 10 remain after this review. WalkthroughThe change updates MoE source paths after directory reorganization. It adjusts CMake entries, C++ includes, developer documentation, performance casebook references, and test source comments. ChangesMoE path reorganization
Priority: ⬇️ Low Estimated code review effort: 2 (Simple) | ~15 minutes Change: Refactor Suggested reviewers: 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 4 files. (1 skipped: 1 unsupported.)
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…p sources th_common pulls them in via add_subdirectory(moe) + target_sources() over a glob, like kernels/moe/; no new target. Signed-off-by: Lori Ren <lorir@nvidia.com>
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Inline comments:
In `@cpp/tensorrt_llm/thop/moe/CMakeLists.txt`:
- Around line 19-20: Update the SRC_CPP file(GLOB_RECURSE ...) declaration used
by target_sources(th_common ...) to include CONFIGURE_DEPENDS, ensuring newly
added .cpp files trigger reconfiguration and are included in th_common without
manual CMake reruns.
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A new op under thop/moe/ then joins th_common without a manual re-configure. Signed-off-by: Lori Ren <lorir@nvidia.com>
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Thanks for the refactor.
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Picks up the MoE torch op regroup from NVIDIA#19216, which moved moeOp.cpp to cpp/tensorrt_llm/thop/moe/cutlass/. A pure rename; the W4A16 changes carry over unchanged. Signed-off-by: Dorian Magasic <dorian.magasic@turintech.ai>
Dev Engineer Review
The PR reorganizes the 16 MoE Torch operation sources into backend- and role-specific directories. CMake adds discovered
.cppfiles to the existingth_commontarget withCONFIGURE_DEPENDS; no new target is introduced.The PR updates include paths, documented source paths, and casebook references. Torch registration and target membership remain unchanged. The main risk is an incorrect moved-source or include path. A full wheel build was reported as locally verified.
QA Engineer Review
tests/unittest/_torch/moe/test_moe_module.pychanges source-reference comments only. Existing tests cover single-GPU, multi-GPU, routing-bias, and EPLB behavior. No test-list changes or test results were supplied. CI-list membership cannot be confirmed from the supplied results. Coverage verdict:needs follow-up.Per-File QA Perspective
.claude/skills/perf-optimization-casebook/references/communication/low-precision-dispatch.md: Updates communication prior-art paths. Verify that the referenced files exist..claude/skills/perf-optimization-casebook/references/kernel-and-fusion/fold-scale-swizzle-into-kernel.md: Updates CUTLASS prior-art paths. Verify the references..claude/skills/perf-optimization-casebook/references/kernel-and-fusion/hw-matched-lowprec-moe-gemm.md: Updates Hopper and CUTLASS paths. Verify the references..claude/skills/perf-optimization-casebook/references/kernel-and-fusion/trtllm-gen-fp4-moe-backend.md: Updates TRTLLM-Gen paths. Verify the references.cpp/tensorrt_llm/nanobind/thop/bindings.cpp: Updates the all-to-all metadata include. Verify nanobind compilation.cpp/tensorrt_llm/thop/CMakeLists.txt: Delegates MoE source collection to themoesubdirectory. Verify that each source entersth_commononce.cpp/tensorrt_llm/thop/moe/CMakeLists.txt: Recursively adds MoE.cppfiles toth_common. Verify source discovery and reconfiguration behavior.cpp/tensorrt_llm/thop/moe/communication/: Relocates communication operations and metadata. Verify multi-GPU communication compilation and behavior.cpp/tensorrt_llm/thop/moe/cuteDsl/cuteDslMoeUtilsOp.cpp: Relocates the CuTe DSL utility operation. Verify registration and execution.cpp/tensorrt_llm/thop/moe/cutlass/moeOp.cpp: Relocates the primary CUTLASS registration block. Verify registration and dispatch.cpp/tensorrt_llm/thop/moe/loadBalance/moeLoadBalanceOp.cpp: Relocates load-balancing operations. Verify EPLB behavior.cpp/tensorrt_llm/thop/moe/marlin/marlinNvfp4MoeMM.cpp: Relocates the Marlin operation. Verify Marlin dispatch.cpp/tensorrt_llm/thop/moe/routing/: Relocates routing operations. Verify routing outputs and error paths.cpp/tensorrt_llm/thop/moe/trtllmGen/: Relocates quantized TRTLLM-Gen operations. Verify backend dispatch.cpp/tensorrt_llm/thop/moe/utils/: Relocates shared utility operations. Verify alignment and utility registration.tensorrt_llm/_torch/auto_deploy/custom_ops/fused_moe/load_moe_align.py: Updates a documented AOT binding path. No runtime behavior change is expected.tensorrt_llm/_torch/moe/fused_moe/MOE_DEVELOPER_GUIDE.md: Updates the C++ file map. Verify that documented paths match the source tree.tests/unittest/_torch/moe/test_moe_module.py: Updates routing source comments only. Existing MoE behavior coverage remains unchanged.Description
Follow-up to #19061: group the 16 files of
cpp/tensorrt_llm/thop/moe/intosub-directories named after
kernels/moe/(cutlass/ trtllmGen/ cuteDsl/ communication/ loadBalance/ routing/ utils/) plusmarlin/for the MoE-onlyMarlin op. Position changes only: 15 × R100, 1 × R099 (one include line),
15
th_commonsource paths, 2 includes, 7 path literals and the developerguide. No per-directory CMake target;
torch.ops.trtllmregistration table,th_commonmembership and CODEOWNERS owners are unchanged.Not in this PR: the thop communication ops have never been in the multi-GPU CI
trigger list (
relatedFileList); left as is, same class as the gap fixed forkernels/moe/communication/in #19061.Test Coverage
Pure move; existing
tests/unittest/_torch/thop/{parallel,serial}/*moe*andtests/unittest/bindings/test_bindings_moe.pycover the ops. Full wheel buildverified locally (
th_commonrelinks).PR Checklist
Please review the following before submitting your PR:
PR description clearly explains what and why. If using CodeRabbit's summary, please make sure it makes sense.
PR Follows TRT-LLM CODING GUIDELINES to the best of your knowledge.
Test cases are provided for new code paths (see test instructions)
If PR introduces API changes, an appropriate PR label is added - either
api-compatibleorapi-breaking. Forapi-breaking, includeBREAKINGin the PR title.Any new dependencies have been scanned for license and vulnerabilities
CODEOWNERS updated if ownership changes
Documentation updated as needed
Update tava architecture diagram if there is a significant design change in PR.
The reviewers assigned automatically/manually are appropriate for the PR.
Please check this after reviewing the above items as appropriate for this PR.
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