Get started with EFA and NCCL - Amazon Elastic Compute Cloud
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Get started with EFA and NCCL

The NVIDIA Collective Communications Library (NCCL) is a library of standard collective communication routines for multiple GPUs across a single node or multiple nodes. NCCL can be used together with EFA, Libfabric, and MPI to support various machine learning workloads. For more information, see the NCCL website.

  • NCCL with EFA is supported with p3dn.24xlarge, p4d.24xlarge, and p5.48xlarge only.

  • Only NCCL 2.4.2 and later is supported with EFA.

The following tutorials help you to launch an EFA and NCCL-enabled instance cluster for machine learning workloads.