---
id: pr-vllm-12696
repo: vllm-project/vllm
pr: 12696
title: '[Bugfix][Kernel] Fix per-token/per-channel quantization for Hopper scaled mm'
author: tlrmchlsmth
date: '2025-02-03'
url: https://github.com/vllm-project/vllm/pull/12696
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- quantization
techniques: []
hardware_features: []
kernel_types:
- quantization
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: c11de33dad217bca79225128059b6fac7e1b2519
inclusion_reason: kernel file changes
changed_paths:
- csrc/quantization/cutlass_w8a8/scaled_mm_c3x.cu
head_ref_oid: be7888daed63b412f3138496f864fc6a8a2b0b08
artifact_dir: evidence/pull-bundles/vllm/gh-12696
---
# [Bugfix][Kernel] Fix per-token/per-channel quantization for Hopper scaled mm

- Repository: `vllm-project/vllm`
- PR: [12696](https://github.com/vllm-project/vllm/pull/12696)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/quantization/cutlass_w8a8/scaled_mm_c3x.cu`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-12696`
