# nccl

## Summary

+ **Support Level:** Secondary Support
+ **Software Access Level:** Open Access
+ **Home Page:** [https://developer.nvidia.com/nccl](https://developer.nvidia.com/nccl)

## Software Description

From the NCCL website: NCCL (pronounced \"Nickel\") is a stand-alone
library of standard collective communication routines, such as
all-gather, reduce, broadcast, etc., that have been optimized to achieve
high bandwidth over PCIe. NCCL supports an arbitrary number of GPUs
installed in a single node and can be used in either single- or
multi-process (e.g., MPI) applications.
## General Linux

This software is intended for use on partitions with GPUs available. It can be
loaded into a Linux environment via:

	module load nccl