parallel-processing

parallel-processing is a skill for Claude Code, Codex from cxcscmu/SkillLearnBench. It costs 19 tokens per session (271 once invoked), scanned A, original, MIT.

A guide to running independent Python calculations in parallel with joblib, a Python library for using multiple CPU cores. It shows this with grid searches and batch computations.

In plain words
What is it for?
Use it to parallelize machine-learning parameter searches and other batch calculations while avoiding shared mutable state.
Why use it?
It reduces the time needed to test many parameter combinations or process many independent tasks.

Skill for Claude CodeCodex

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

Good fit Use it to parallelize machine-learning parameter searches and other batch calculations while avoiding shared mutable state.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cxcscmu/skilllearnbench/parallel-processing
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 cxcscmu/SkillLearnBench --skill parallel-processing
Clone the repo
git clone --depth 1 https://github.com/cxcscmu/SkillLearnBench

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 parallel-processing

README.md
[![agentmods](https://agentmods.dev/badge/skills/cxcscmu/skilllearnbench/parallel-processing.svg)](https://agentmods.dev/skills/cxcscmu/skilllearnbench/parallel-processing)
Your own site
<a href="https://agentmods.dev/skills/cxcscmu/skilllearnbench/parallel-processing"><img src="https://agentmods.dev/badge/skills/cxcscmu/skilllearnbench/parallel-processing.svg" alt="Measured on agentmods" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 271 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 $0.00019 $0.00271
Opus 5 $0.00010 $0.00135
Sonnet 5 $0.00004 $0.00054
Haiku 4.5 $0.00002 $0.00027

Measured 3d ago against content hash c863258192fd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

parallel-processing 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 3d 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.

skills/b1-one-shot-claude-opus-4-6/dbscan-parameter-tuning/parallel-processing/SKILL.md · 35 lines

What it actually says

Parallel Processing with joblib

Grid Search Parallelization

from joblib import Parallel, delayed
import itertools

def evaluate_params(min_samples, epsilon, shape_weight, citsci_grouped, expert_grouped, all_images):
    # ... evaluate one hyperparameter combination
    return f1_avg, delta_avg, min_samples, epsilon, shape_weight

param_grid = list(itertools.product(
    range(3, 10),           # min_samples
    range(4, 25, 2),        # epsilon
    [round(0.9 + i*0.1, 1) for i in range(11)]  # shape_weight
))

results = Parallel(n_jobs=-1)(
    delayed(evaluate_params)(ms, eps, sw, citsci_grouped, expert_grouped, all_images)
    for ms, eps, sw in param_grid
)

Key Points

  • n_jobs=-1 uses all available cores
  • delayed() wraps the function for lazy evaluation
  • Each call should be independent (no shared mutable state)
  • Pass pre-grouped DataFrames to avoid redundant groupby in each worker
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. 3d ago First seen · 35 lines · 19 tokens per session scan A c863258192fd

Subscribe to this mod's changes

parallel-processing is a skill published in the GitHub repository cxcscmu/SkillLearnBench (83 stars, last pushed 1mo ago), licensed MIT. It adds 19 tokens to every session and 271 once invoked, about $0.0001 per session on Opus 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 2026-09-03.

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