---
id: pr-vllm-37970
repo: vllm-project/vllm
pr: 37970
title: '[Kernel] Optimize SM120 CUTLASS blockwise FP8 GEMM'
author: Nekofish-L
date: '2026-03-25'
url: https://github.com/vllm-project/vllm/pull/37970
source_category: upstream-code
architectures:
- sm100
tags:
- arch_pipeline
- cutlass
- gemm_quant
techniques:
- fine-grained-quantization
- pipeline-stages
hardware_features:
- fp8
kernel_types:
- decode
- gemm
- runtime
languages:
- cuda-cpp
- cute-dsl
captured_at: '2026-05-16'
status: merged
merge_sha: e7221180e1d67a91e84a93aea08841fef8c67680
inclusion_reason: Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.
changed_paths:
- csrc/quantization/w8a8/cutlass/c3x/scaled_mm_blockwise_sm120_fp8_dispatch.cuh
artifact_dir: evidence/pull-bundles/vllm/gh-37970
head_ref_oid: 60b8863f5331cc9582598b9d30d1d5348c48aef3
---
# [Kernel] Optimize SM120 CUTLASS blockwise FP8 GEMM

- Repository: `vllm-project/vllm`
- PR: [37970](https://github.com/vllm-project/vllm/pull/37970)
- Decision: `Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.`
- Reason: Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.

## Changed Paths

- `csrc/quantization/w8a8/cutlass/c3x/scaled_mm_blockwise_sm120_fp8_dispatch.cuh`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-37970`
