Introduction

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 – |mpi|_ and libfabrics.

• Optimized to drive scalability of communication patterns. It supports collectives and point-to-point (send/receive) primitives.

• 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.