---
id: pr-vllm-27284
repo: vllm-project/vllm
pr: 27284
title: '[Perf] SM100 - add swap AB optimization to CUTLASS FP8 GEMM'
author: LyrisZhong
date: '2025-11-04'
url: https://github.com/vllm-project/vllm/pull/27284
source_category: upstream-code
architectures:
- sm100
tags:
- fp8
- gemm
- quantization
techniques: []
hardware_features:
- fp8
kernel_types:
- gemm
- quantization
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 97e3dda84ba79100509fafb58d651bde25e3f32f
inclusion_reason: kernel file changes
changed_paths:
- csrc/quantization/w8a8/cutlass/c3x/scaled_mm_sm100_fp8.cu
- csrc/quantization/w8a8/cutlass/c3x/scaled_mm_sm100_fp8_dispatch.cuh
head_ref_oid: cf23cb9baef6d559cd3869f7bc605f4fad9c8f35
artifact_dir: evidence/pull-bundles/vllm/gh-27284
---
# [Perf] SM100 - add swap AB optimization to CUTLASS FP8 GEMM

- Repository: `vllm-project/vllm`
- PR: [27284](https://github.com/vllm-project/vllm/pull/27284)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/quantization/w8a8/cutlass/c3x/scaled_mm_sm100_fp8.cu`
- `csrc/quantization/w8a8/cutlass/c3x/scaled_mm_sm100_fp8_dispatch.cuh`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-27284`
