---
id: pr-vllm-12978
repo: vllm-project/vllm
pr: 12978
title: '[Kernel]Add streamK for block-quantized CUTLASS kernels'
author: Hongbosherlock
date: '2025-02-21'
url: https://github.com/vllm-project/vllm/pull/12978
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: 839b27c6cc3c07969a7a0f97a18977a1662be7fc
inclusion_reason: kernel file changes
changed_paths:
- csrc/quantization/cutlass_w8a8/c3x/cutlass_gemm_caller.cuh
- csrc/quantization/cutlass_w8a8/c3x/scaled_mm_blockwise_sm90_fp8_dispatch.cuh
head_ref_oid: b986c01404cc185ad61917d2a6eabb33834a70c5
artifact_dir: evidence/pull-bundles/vllm/gh-12978
---
# [Kernel]Add streamK for block-quantized CUTLASS kernels

- Repository: `vllm-project/vllm`
- PR: [12978](https://github.com/vllm-project/vllm/pull/12978)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/quantization/cutlass_w8a8/c3x/cutlass_gemm_caller.cuh`
- `csrc/quantization/cutlass_w8a8/c3x/scaled_mm_blockwise_sm90_fp8_dispatch.cuh`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-12978`
