Intel® oneAPI Collective Communications Library Developer Guide and Reference

ID 772609
Date 3/31/2023
Public

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Intel® oneAPI Collective Communications Library

Intel® oneAPI Collective Communications Library (oneCCL) provides an efficient implementation of communication patterns used in deep learning.

oneCCL features include:

  • Built on top of lower-level communication middleware – Intel® MPI Library and libfabrics.

  • Optimized to drive scalability of communication patterns by allowing to easily trade off compute for communication performance.

  • Works across various interconnects: InfiniBand*, Cornelis Networks*, and Ethernet.

  • Provides common API sufficient to support communication workflows within Deep Learning / distributed frameworks (such as PyTorch*, Horovod*).

oneCCL package comprises the oneCCL Software Development Kit (SDK) and the Intel® MPI Library Runtime components.

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Developer Guide

Developer Reference