---
id: pr-vllm-23045
repo: vllm-project/vllm
pr: 23045
title: '[Kernel] CUTLASS MoE FP8: Integrate cuda moe permute/unpermute'
author: shixianc
date: '2025-08-20'
url: https://github.com/vllm-project/vllm/pull/23045
source_category: upstream-code
architectures:
- sm100
tags:
- fp8
- gemm
- grouped-gemm
- kernel-fusion
- moe
- quantization
techniques:
- kernel-fusion
hardware_features:
- fp8
kernel_types:
- gemm
- grouped-gemm
- moe
- quantization
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: b17109beeafbf9577c319ab61530810943a7fc4b
inclusion_reason: kernel file changes
changed_paths:
- benchmarks/kernels/benchmark_grouped_gemm_cutlass.py
- csrc/moe/moe_permute_unpermute_op.cu
- csrc/ops.h
- csrc/quantization/cutlass_w8a8/moe/get_group_starts.cuh
- csrc/quantization/cutlass_w8a8/moe/moe_data.cu
- csrc/quantization/cutlass_w8a8/scaled_mm_entry.cu
- csrc/torch_bindings.cpp
- tests/kernels/moe/test_cutlass_moe.py
- tests/kernels/moe/test_moe_permute_unpermute.py
- tests/kernels/moe/test_pplx_cutlass_moe.py
- tests/kernels/quantization/test_cutlass_scaled_mm.py
- vllm/_custom_ops.py
- vllm/model_executor/layers/fused_moe/cutlass_moe.py
- vllm/model_executor/layers/fused_moe/moe_permute_unpermute.py
- vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors_moe.py
head_ref_oid: 0842f5244ff90b6126635642162ed3b8ad12c688
artifact_dir: evidence/pull-bundles/vllm/gh-23045
---
# [Kernel] CUTLASS MoE FP8: Integrate cuda moe permute/unpermute

- Repository: `vllm-project/vllm`
- PR: [23045](https://github.com/vllm-project/vllm/pull/23045)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `benchmarks/kernels/benchmark_grouped_gemm_cutlass.py`
- `csrc/moe/moe_permute_unpermute_op.cu`
- `csrc/ops.h`
- `csrc/quantization/cutlass_w8a8/moe/get_group_starts.cuh`
- `csrc/quantization/cutlass_w8a8/moe/moe_data.cu`
- `csrc/quantization/cutlass_w8a8/scaled_mm_entry.cu`
- `csrc/torch_bindings.cpp`
- `tests/kernels/moe/test_cutlass_moe.py`
- `tests/kernels/moe/test_moe_permute_unpermute.py`
- `tests/kernels/moe/test_pplx_cutlass_moe.py`
- `tests/kernels/quantization/test_cutlass_scaled_mm.py`
- `vllm/_custom_ops.py`
- `vllm/model_executor/layers/fused_moe/cutlass_moe.py`
- `vllm/model_executor/layers/fused_moe/moe_permute_unpermute.py`
- `vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors_moe.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-23045`
