---
id: pr-vllm-20142
repo: vllm-project/vllm
pr: 20142
title: Replace `multiply_add` with `homogeneous_multiply_add` to Address Clang Template Parameter Issue
author: wenxin0319
date: '2025-07-09'
url: https://github.com/vllm-project/vllm/pull/20142
source_category: upstream-code
architectures:
- sm100
tags:
- epilogue-fusion
techniques:
- epilogue-fusion
hardware_features: []
kernel_types: []
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 5eaf57005065441af2c7223eec01f4526571e00c
inclusion_reason: kernel file changes
changed_paths:
- csrc/cutlass_extensions/epilogue/scaled_mm_epilogues_c2x.hpp
- csrc/cutlass_extensions/epilogue/scaled_mm_epilogues_c3x.hpp
head_ref_oid: a7fd6123d88c0253a6b72e924e4bdc97ff6dfc83
artifact_dir: evidence/pull-bundles/vllm/gh-20142
---
# Replace `multiply_add` with `homogeneous_multiply_add` to Address Clang Template Parameter Issue

- Repository: `vllm-project/vllm`
- PR: [20142](https://github.com/vllm-project/vllm/pull/20142)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/cutlass_extensions/epilogue/scaled_mm_epilogues_c2x.hpp`
- `csrc/cutlass_extensions/epilogue/scaled_mm_epilogues_c3x.hpp`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-20142`
