---
id: pr-tensorrt-llm-14070
repo: NVIDIA/TensorRT-LLM
pr: 14070
title: '[None][perf] Speed up model init: cache support_nvlink()'
author: yuantailing
date: '2026-05-15'
url: https://github.com/NVIDIA/TensorRT-LLM/pull/14070
source_category: upstream-code
architectures:
- sm100
tags:
- cutlass
techniques:
- cache-policy
hardware_features: []
kernel_types: []
languages:
- cute-dsl
captured_at: '2026-05-16'
status: merged
merge_sha: f4abee975d60808360c24ce0386570ff7af3ff08
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- cpp/tensorrt_llm/thop/allreduceOp.cpp
- tensorrt_llm/_mnnvl_utils.py
artifact_dir: evidence/pull-bundles/tensorrt-llm/gh-14070
head_ref_oid: 4485466da88d0be6bfdc3a239656fe466fcdfd0b
---
# [None][perf] Speed up model init: cache support_nvlink()

- Repository: `NVIDIA/TensorRT-LLM`
- PR: [14070](https://github.com/NVIDIA/TensorRT-LLM/pull/14070)
- 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

- `cpp/tensorrt_llm/thop/allreduceOp.cpp`
- `tensorrt_llm/_mnnvl_utils.py`

## Evidence Bundle

`evidence/pull-bundles/tensorrt-llm/gh-14070`
