---
id: pr-tilelang-2166
repo: tile-ai/tilelang
pr: 2166
title: '[BugFix] Consider non-local store in external call and SIMT producer for warp specialize'
author: Rachmanino
date: '2026-05-12'
url: https://github.com/tile-ai/tilelang/pull/2166
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- MLA
- TMA
- arch_pipeline
- benchmark_test
- compiler_runtime
- fp4
- fp8
- gemm
- hopper
- mxfp4
techniques:
- async-copy
- pipeline-stages
- warp-specialization
hardware_features:
- fp4
- fp8
- hopper
- mxfp4
- tma
kernel_types:
- compiler
- gemm
- mla
- runtime
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: 431c85f10097ae7f51d796b7baa55c59efd55712
inclusion_reason: 'Extract the architecture assumption first: SM target, TMA/WGMMA/tcgen path, cluster use, and pipeline stages.'
changed_paths:
- src/transform/lower_tile_op.cc
- src/transform/producer_consumer_ws.cc
- testing/python/transform/test_tilelang_transform_producer_consumer_ws.py
artifact_dir: evidence/pull-bundles/tilelang/gh-2166
head_ref_oid: f1d1d77c39303b6020e089585bfb4c7eb1053ba1
---
# [BugFix] Consider non-local store in external call and SIMT producer for warp specialize

- Repository: `tile-ai/tilelang`
- PR: [2166](https://github.com/tile-ai/tilelang/pull/2166)
- Decision: `Extract the architecture assumption first: SM target, TMA/WGMMA/tcgen path, cluster use, and pipeline stages.`
- Reason: Extract the architecture assumption first: SM target, TMA/WGMMA/tcgen path, cluster use, and pipeline stages.

## Changed Paths

- `src/transform/lower_tile_op.cc`
- `src/transform/producer_consumer_ws.cc`
- `testing/python/transform/test_tilelang_transform_producer_consumer_ws.py`

## Evidence Bundle

`evidence/pull-bundles/tilelang/gh-2166`
