---
id: pr-flashinfer-2642
repo: flashinfer-ai/flashinfer
pr: 2642
title: '[fp8_blockwise]Fix int32 overflow in TRTLLM fused MoE activation kernel'
author: charlotte12l
date: '2026-03-05'
url: https://github.com/flashinfer-ai/flashinfer/pull/2642
source_category: upstream-code
architectures:
- sm100
tags:
- fp8
- kernel-fusion
- moe
techniques:
- kernel-fusion
hardware_features:
- fp8
kernel_types:
- moe
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 1b02c56bdbbdafca53ee083eaa26282d23a3063f
inclusion_reason: kernel file changes
changed_paths:
- csrc/trtllm_fused_moe_dev_kernel.cu
head_ref_oid: 061e481076b66447008e170e9f1cdd2314b42855
artifact_dir: evidence/pull-bundles/flashinfer/gh-2642
---
# [fp8_blockwise]Fix int32 overflow in TRTLLM fused MoE activation kernel

- Repository: `flashinfer-ai/flashinfer`
- PR: [2642](https://github.com/flashinfer-ai/flashinfer/pull/2642)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/trtllm_fused_moe_dev_kernel.cu`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2642`
