---
id: pr-vllm-27897
repo: vllm-project/vllm
pr: 27897
title: '[Performance][B200] Fix deepgemm prologue'
author: varun-sundar-rabindranath
date: '2025-11-12'
url: https://github.com/vllm-project/vllm/pull/27897
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- fp8
- gemm
- kernel-fusion
- moe
- quantization
techniques:
- kernel-fusion
hardware_features:
- fp8
kernel_types:
- gemm
- moe
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 74a9a9faad062e6fe90f7d238b5fad7e2f3da237
inclusion_reason: kernel file changes
changed_paths:
- vllm/model_executor/layers/fused_moe/batched_deep_gemm_moe.py
- vllm/model_executor/layers/fused_moe/deepep_ll_prepare_finalize.py
- vllm/model_executor/layers/fused_moe/modular_kernel.py
- vllm/model_executor/layers/quantization/fp8.py
- vllm/model_executor/layers/quantization/utils/fp8_utils.py
- vllm/utils/deep_gemm.py
head_ref_oid: ad9b2fb02dee8a1d96b73779920b1159fe5158e0
artifact_dir: evidence/pull-bundles/vllm/gh-27897
---
# [Performance][B200] Fix deepgemm prologue

- Repository: `vllm-project/vllm`
- PR: [27897](https://github.com/vllm-project/vllm/pull/27897)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/model_executor/layers/fused_moe/batched_deep_gemm_moe.py`
- `vllm/model_executor/layers/fused_moe/deepep_ll_prepare_finalize.py`
- `vllm/model_executor/layers/fused_moe/modular_kernel.py`
- `vllm/model_executor/layers/quantization/fp8.py`
- `vllm/model_executor/layers/quantization/utils/fp8_utils.py`
- `vllm/utils/deep_gemm.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-27897`
