---
id: pr-vllm-20762
repo: vllm-project/vllm
pr: 20762
title: '[Performance] Performance improvements in non-blockwise fp8 CUTLASS MoE'
author: ElizaWszola
date: '2025-07-17'
url: https://github.com/vllm-project/vllm/pull/20762
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: 9fb2d22032cee577a189f8c4cddd88a3c190cb0c
inclusion_reason: kernel file changes
changed_paths:
- benchmarks/kernels/benchmark_grouped_gemm_cutlass.py
- csrc/moe/moe_permute_unpermute_op.cu
- tests/kernels/moe/test_cutlass_moe.py
- tests/kernels/moe/test_pplx_cutlass_moe.py
- vllm/model_executor/layers/fused_moe/cutlass_moe.py
- vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors_moe.py
head_ref_oid: 30fe7c0052d7ccd67775c175ebd82d939455f249
artifact_dir: evidence/pull-bundles/vllm/gh-20762
---
# [Performance] Performance improvements in non-blockwise fp8 CUTLASS MoE

- Repository: `vllm-project/vllm`
- PR: [20762](https://github.com/vllm-project/vllm/pull/20762)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `benchmarks/kernels/benchmark_grouped_gemm_cutlass.py`
- `csrc/moe/moe_permute_unpermute_op.cu`
- `tests/kernels/moe/test_cutlass_moe.py`
- `tests/kernels/moe/test_pplx_cutlass_moe.py`
- `vllm/model_executor/layers/fused_moe/cutlass_moe.py`
- `vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors_moe.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-20762`
