---
id: pr-tilelang-2052
repo: tile-ai/tilelang
pr: 2052
title: '[Bugfix] Use shared::cta instead of shared::cluster for non-cluster T…'
author: qqq-tao
date: '2026-04-18'
url: https://github.com/tile-ai/tilelang/pull/2052
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- MLA
- TMA
- arch_pipeline
- blackwell
- copy lowering
- fp4
- fp8
- gemm
- hopper
- memory_primitives
- mxfp4
techniques:
- async-copy
- pipeline-stages
hardware_features:
- blackwell
- fp4
- fp8
- hopper
- mxfp4
- tma
kernel_types:
- gemm
- memory
- mla
- runtime
languages:
- cuda-cpp
- ptx
captured_at: '2026-05-16'
status: merged
merge_sha: 0924dab6451b843d222c6ca7d41287d03ec40c42
inclusion_reason: 'Extract the architecture assumption first: SM target, TMA/WGMMA/tcgen path, cluster use, and pipeline stages.'
changed_paths:
- src/target/ptx.cc
- src/tl_templates/cuda/copy_sm90.h
artifact_dir: evidence/pull-bundles/tilelang/gh-2052
head_ref_oid: 5bd1d179386446a356216e30111669ad6bafb5b5
---
# [Bugfix] Use shared::cta instead of shared::cluster for non-cluster T…

- Repository: `tile-ai/tilelang`
- PR: [2052](https://github.com/tile-ai/tilelang/pull/2052)
- 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/target/ptx.cc`
- `src/tl_templates/cuda/copy_sm90.h`

## Evidence Bundle

`evidence/pull-bundles/tilelang/gh-2052`
