---
id: pr-vllm-28124
repo: vllm-project/vllm
pr: 28124
title: '[Perf][DeepSeek] Add sigmoid+bias fusion to fused_grouped_topk from TRTLLM'
author: mgoin
date: '2025-11-08'
url: https://github.com/vllm-project/vllm/pull/28124
source_category: upstream-code
architectures:
- sm100
tags:
- kernel-fusion
- moe
techniques:
- kernel-fusion
hardware_features: []
kernel_types:
- moe
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 085252764710fdb42ac180983ef4c37da0ed72d3
inclusion_reason: kernel file changes
changed_paths:
- csrc/moe/grouped_topk_kernels.cu
- csrc/moe/moe_ops.h
- csrc/moe/torch_bindings.cpp
- vllm/_custom_ops.py
- vllm/model_executor/layers/fused_moe/fused_moe.py
head_ref_oid: 698b60d6e88a8ee7f662a886c9ab9b4970a7a4ed
artifact_dir: evidence/pull-bundles/vllm/gh-28124
---
# [Perf][DeepSeek] Add sigmoid+bias fusion to fused_grouped_topk from TRTLLM

- Repository: `vllm-project/vllm`
- PR: [28124](https://github.com/vllm-project/vllm/pull/28124)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/moe/grouped_topk_kernels.cu`
- `csrc/moe/moe_ops.h`
- `csrc/moe/torch_bindings.cpp`
- `vllm/_custom_ops.py`
- `vllm/model_executor/layers/fused_moe/fused_moe.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-28124`
