module_bottleneck

module_bottleneck is a skill for Claude Code, Codex from DeepLink-org/probing. It costs 15 tokens per session (294 once invoked), scanned A, original, Apache-2.0.

A performance-analysis skill that finds the slowest PyTorch modules in recent training steps. PyTorch is a machine-learning software library, and a module is a reusable part of a model or processing pipeline.

In plain words
What is it for?
Use it to rank slow modules, limit analysis to recent steps or a chosen hook stage, and decide whether deeper call-stack or distributed-performance profiling is needed.
Why use it?
It identifies which model components consume the most time over ongoing training without relying only on a one-time detailed profiler recording.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to rank slow modules, limit analysis to recent steps or a chosen hook stage, and decide whether deeper call-stack or distributed-performance profiling is needed.

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Install with agentmods
npx agentmods add skills/deeplink-org/probing/module_bottleneck
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.

Any agent
npx skills add DeepLink-org/probing --skill module_bottleneck
Clone the repo
git clone --depth 1 https://github.com/DeepLink-org/probing

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 module_bottleneck

README.md
[![agentmods](https://agentmods.dev/badge/skills/deeplink-org/probing/module_bottleneck/github.svg)](https://agentmods.dev/skills/deeplink-org/probing/module_bottleneck)
Your own site
<a href="https://agentmods.dev/skills/deeplink-org/probing/module_bottleneck"><img src="https://agentmods.dev/badge/skills/deeplink-org/probing/module_bottleneck/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for module_bottleneck

Your own site · 80×15
<a href="https://agentmods.dev/skills/deeplink-org/probing/module_bottleneck"><img src="https://agentmods.dev/badge/skills/deeplink-org/probing/module_bottleneck.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 294 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 5.1 $0.00015 $0.00294
Opus 5.5 $0.00006 $0.00118
Sonnet 5.5 $0.00003 $0.00059
Haiku 4.5 $0.00002 $0.00029

Measured 1mo ago against content hash 5288d6d302c0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

module_bottleneck scanned grade A with 0 findings 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 1mo 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

python/probing/bundled_skills/module_bottleneck/SKILL.md · 31 lines

What it actually says

PyTorch module bottleneck

基于 python.torch_trace 的 post-hook duration,找出最近 step 中最耗时的模块。 与 torch.profiler 互补:这是长期采样、模块级、低开销视图。

Parameters

  • recent_steps (integer, default 10): Analyze the last N training steps
  • stage_filter (string, default post forward): Hook stage to aggregate (post forward | post step)
  • 打开 Torch 火焰图 (profiling/torch) 看调用栈分布
  • 分布式变慢 → skill: slow_rank
  • 需要 CPU 栈 → SET probing.pprof.sample_freq=99, profiling/pprof
Files

What ships with it

1 file 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. 1mo ago First seen · 31 lines · 15 tokens per session scan A 5288d6d302c0

Subscribe to this mod's changes

module_bottleneck is a skill published in the GitHub repository DeepLink-org/probing (10 stars, last pushed 11d ago), licensed Apache-2.0. It adds 15 tokens to every session and 294 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.