perf-nsight-systems

perf-nsight-systems is a skill for Claude Code, Codex from NVIDIA/TensorRT-LLM. It costs 111 tokens per session (3,696 once invoked), scanned B, original, no licence file.

A command-line guide for Nsight Systems, NVIDIA’s tool for recording and inspecting timelines of CPU, GPU, and distributed workloads.

In plain words
What is it for?
Use it to run and analyze nsys profiles and reports, inspect GPU idle time, and study NCCL communication overlap in distributed training.
Why use it?
It helps show where time is spent and why the GPU may be idle, including delays or poor overlap between parts of distributed training.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/nvidia/tensorrt-llm/perf-nsight-systems
Any agent
npx skills add NVIDIA/TensorRT-LLM --skill perf-nsight-systems
Clone the repo
git clone --depth 1 https://github.com/NVIDIA/TensorRT-LLM

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for perf-nsight-systems

README.md
[![agentmods](https://agentmods.dev/badge/skills/nvidia/tensorrt-llm/perf-nsight-systems.svg)](https://agentmods.dev/skills/nvidia/tensorrt-llm/perf-nsight-systems)
Your own site
<a href="https://agentmods.dev/skills/nvidia/tensorrt-llm/perf-nsight-systems"><img src="https://agentmods.dev/badge/skills/nvidia/tensorrt-llm/perf-nsight-systems.svg" alt="Measured on agentmods" height="20"></a>
Per session 111 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,696 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00111 $0.03696
Opus 5 $0.00056 $0.01848
Sonnet 5 $0.00022 $0.00739
Haiku 4.5 $0.00011 $0.00370

Measured 4d ago against content hash dfb23913b3ec, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

perf-nsight-systems scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

| `Permission denied` or `requires root` | Needs elevated privileges | `sudo nsys ...` or `--cap-add=SYS_ADMIN` in containers |
.claude/skills/perf-nsight-systems/SKILL.md · 398 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 398 lines · 111 tokens per session scan B dfb23913b3ec

Subscribe to this mod's changes

perf-nsight-systems is a skill published in the GitHub repository NVIDIA/TensorRT-LLM (14,505 stars, last pushed 5d ago), with no licence file. It adds 111 tokens to every session and 3,696 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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