---
id: pr-tensorrt-llm-13103
repo: NVIDIA/TensorRT-LLM
pr: 13103
title: '[None][feat] Optimize causal_conv1d prefill and decode kernels'
author: Wanli-Jiang
date: '2026-04-22'
url: https://github.com/NVIDIA/TensorRT-LLM/pull/13103
source_category: upstream-code
architectures:
- sm100
tags:
- attention_kv
- benchmark kernel
- benchmark_test
- cuda kernel
techniques: []
hardware_features: []
kernel_types:
- attention
- decode
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: a8a8fa1e85a628d51fdaab15c3f9f1eb0d529c07
inclusion_reason: Preserve page/KV/layout and plan-run contracts; profile memory traffic separately from math utilization.
changed_paths:
- cpp/tensorrt_llm/kernels/causalConv1d/causalConv1d.cu
- tests/unittest/_torch/modeling/test_modeling_nemotron_h.py
artifact_dir: evidence/pull-bundles/tensorrt-llm/gh-13103
head_ref_oid: a2a3a7429edb0596778fd127c4fe7448e70d44c8
---
# [None][feat] Optimize causal_conv1d prefill and decode kernels

- Repository: `NVIDIA/TensorRT-LLM`
- PR: [13103](https://github.com/NVIDIA/TensorRT-LLM/pull/13103)
- Decision: `Preserve page/KV/layout and plan-run contracts; profile memory traffic separately from math utilization.`
- Reason: Preserve page/KV/layout and plan-run contracts; profile memory traffic separately from math utilization.

## Changed Paths

- `cpp/tensorrt_llm/kernels/causalConv1d/causalConv1d.cu`
- `tests/unittest/_torch/modeling/test_modeling_nemotron_h.py`

## Evidence Bundle

`evidence/pull-bundles/tensorrt-llm/gh-13103`
