Transport selection¶
oneCCL supports two transports for inter-node communication: Intel® MPI Library and libfabrics.
The transport selection is controlled by CCL_ATL_TRANSPORT.
In case of MPI over libfaric implementation (for example, Intel® MPI Library 2019) or in case of direct libfabric transport,
the selection of specific libfaric provider is controlled by the FI_PROVIDER environment variable.