---
id: pr-vllm-28664
repo: vllm-project/vllm
pr: 28664
title: '[AMD][ROCm] MoRI EP: a high-performance all2all backend'
author: alexsun07
date: '2026-01-22'
url: https://github.com/vllm-project/vllm/pull/28664
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 49a12622678906727dd9d1cb157d5e14ab24d91b
inclusion_reason: defer
changed_paths:
- tests/kernels/moe/modular_kernel_tools/cli_args.py
- tests/kernels/moe/modular_kernel_tools/common.py
- tests/kernels/moe/modular_kernel_tools/mk_objects.py
- vllm/_aiter_ops.py
- vllm/config/parallel.py
- vllm/distributed/device_communicators/all2all.py
- vllm/distributed/device_communicators/cuda_communicator.py
- vllm/envs.py
- vllm/model_executor/layers/fused_moe/__init__.py
- vllm/model_executor/layers/fused_moe/all2all_utils.py
- vllm/model_executor/layers/fused_moe/config.py
- vllm/model_executor/layers/fused_moe/layer.py
- vllm/model_executor/layers/fused_moe/mori_prepare_finalize.py
- vllm/model_executor/layers/fused_moe/rocm_aiter_fused_moe.py
- vllm/platforms/rocm.py
- vllm/utils/import_utils.py
artifact_dir: evidence/pull-bundles/vllm/gh-28664
head_ref_oid: b6413735f351282f7eb8a1a5f53275cfc5e9cf59
---
# [AMD][ROCm] MoRI EP: a high-performance all2all backend

- Repository: `vllm-project/vllm`
- PR: [28664](https://github.com/vllm-project/vllm/pull/28664)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `tests/kernels/moe/modular_kernel_tools/cli_args.py`
- `tests/kernels/moe/modular_kernel_tools/common.py`
- `tests/kernels/moe/modular_kernel_tools/mk_objects.py`
- `vllm/_aiter_ops.py`
- `vllm/config/parallel.py`
- `vllm/distributed/device_communicators/all2all.py`
- `vllm/distributed/device_communicators/cuda_communicator.py`
- `vllm/envs.py`
- `vllm/model_executor/layers/fused_moe/__init__.py`
- `vllm/model_executor/layers/fused_moe/all2all_utils.py`
- `vllm/model_executor/layers/fused_moe/config.py`
- `vllm/model_executor/layers/fused_moe/layer.py`
- `vllm/model_executor/layers/fused_moe/mori_prepare_finalize.py`
- `vllm/model_executor/layers/fused_moe/rocm_aiter_fused_moe.py`
- `vllm/platforms/rocm.py`
- `vllm/utils/import_utils.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-28664`
