NCCL Test Environment

A pixi-managed environment for running NCCL (NVIDIA Collective Communications Library) tests.

Prerequisites

• Linux x86_64
• CUDA 12.9+

Quick Start

1. Install pixi

curl -fsSL https://pixi.sh/install.sh | bash

After installation, restart your shell or run:

source ~/.bashrc

2. Install dependencies

pixi install

This will install all dependencies defined in pixi.toml:

• nccl 2.19.3
• nccl-tests

3. Enter the environment shell

pixi shell

You are now in the pixi environment with all tools available.