---
id: pr-vllm-16861
repo: vllm-project/vllm
pr: 16861
title: '[Kernel] Add expert_map support to Cutlass FP8 MOE'
author: varun-sundar-rabindranath
date: '2025-04-22'
url: https://github.com/vllm-project/vllm/pull/16861
source_category: upstream-code
architectures:
- sm100
tags:
- fp8
- kernel-fusion
- moe
- quantization
techniques:
- kernel-fusion
hardware_features:
- fp8
kernel_types:
- moe
- quantization
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 7b8a2ab76fc3438b1bd6e3caa86165cc0058c462
inclusion_reason: kernel file changes
changed_paths:
- csrc/quantization/cutlass_w8a8/moe/moe_data.cu
- tests/kernels/test_cutlass_moe.py
- vllm/config.py
- vllm/model_executor/layers/fused_moe/cutlass_moe.py
- vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors_moe.py
head_ref_oid: 00342e639753454dbb0d1a72af84bf7cde720e2f
artifact_dir: evidence/pull-bundles/vllm/gh-16861
---
# [Kernel] Add expert_map support to Cutlass FP8 MOE

- Repository: `vllm-project/vllm`
- PR: [16861](https://github.com/vllm-project/vllm/pull/16861)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/quantization/cutlass_w8a8/moe/moe_data.cu`
- `tests/kernels/test_cutlass_moe.py`
- `vllm/config.py`
- `vllm/model_executor/layers/fused_moe/cutlass_moe.py`
- `vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors_moe.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-16861`
