---
id: pr-tilelang-1221
repo: tile-ai/tilelang
pr: 1221
title: ' [Enhancement] Improve iterator handling in layout utilities and parallel operations'
author: LeiWang1999
date: '2025-11-10'
url: https://github.com/tile-ai/tilelang/pull/1221
source_category: upstream-code
architectures:
- sm100
tags:
- fused-op
techniques:
- kernel-fusion
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 2957afcabf7ca5aaa3da2f7c9027a6199b5ba1cb
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- src/layout/utils.cc
- src/op/parallel.cc
- testing/python/layout/test_tilelang_layout_fused_replicate.py
artifact_dir: evidence/pull-bundles/tilelang/gh-1221
head_ref_oid: 75336f229c0c25310ea06a3107902074a5d6fc13
---
#  [Enhancement] Improve iterator handling in layout utilities and parallel operations

- Repository: `tile-ai/tilelang`
- PR: [1221](https://github.com/tile-ai/tilelang/pull/1221)
- Decision: `Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.`
- Reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.

## Changed Paths

- `src/layout/utils.cc`
- `src/op/parallel.cc`
- `testing/python/layout/test_tilelang_layout_fused_replicate.py`

## Evidence Bundle

`evidence/pull-bundles/tilelang/gh-1221`
