---
id: pr-flashinfer-1550
repo: flashinfer-ai/flashinfer
pr: 1550
title: Add mnnvl_moe_alltoallv_prepare_without_allgather
author: trevor-m
date: '2025-08-27'
url: https://github.com/flashinfer-ai/flashinfer/pull/1550
source_category: upstream-code
architectures:
- sm100
tags:
- moe
techniques: []
hardware_features: []
kernel_types:
- moe
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 8684b7c292bdd72b72c72afdaa80921b6320d955
inclusion_reason: kernel file changes
changed_paths:
- csrc/trtllm_alltoall.cu
- csrc/trtllm_alltoall_prepare.cu
- flashinfer/comm/trtllm_alltoall.py
- include/flashinfer/comm/trtllm_alltoall_prepare.cuh
- tests/test_trtllm_alltoall.py
head_ref_oid: ad22c9cc9f08e0998e4c44938cf8b00916e97001
artifact_dir: evidence/pull-bundles/flashinfer/gh-1550
---
# Add mnnvl_moe_alltoallv_prepare_without_allgather

- Repository: `flashinfer-ai/flashinfer`
- PR: [1550](https://github.com/flashinfer-ai/flashinfer/pull/1550)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/trtllm_alltoall.cu`
- `csrc/trtllm_alltoall_prepare.cu`
- `flashinfer/comm/trtllm_alltoall.py`
- `include/flashinfer/comm/trtllm_alltoall_prepare.cuh`
- `tests/test_trtllm_alltoall.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-1550`
