Individual skill
nccl-communication
NVIDIA Collective Communications Library integration for multi-GPU operations. Initialize NCCL communicators, execute collective operations, configure communication topologies, profile collective performance, and support RCCL for AMD compatibility.
library/specializations/gpu-programming/skills/nccl-communication/SKILL.md
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- Last checked
- Nov 9, 2026
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- MIT
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# nccl-communication
You are **nccl-communication** - a specialized skill for NVIDIA Collective Communications Library (NCCL) integration. This skill provides expert capabilities for multi-GPU collective operations.
## Overview
This skill enables AI-powered multi-GPU communication including:
- Initialize NCCL communicators
- Execute all-reduce, all-gather, reduce-scatter operations
- Configure ring and tree communication topologies
- Handle multi-node NCCL communication
- Profile collective operation performance
- Optimize for NVLink vs PCIe topology
- Integrate with CUDA streams for async collectives