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nccl: nccl (Optimized primitives for inter-GPU communication)
nccl:
nccl: NCCL (pronounced "Nickel") is a stand-alone library of standard
nccl: communication routines for GPUs, implementing all-reduce, all-gather,
nccl: reduce, broadcast, reduce-scatter, as well as any send/receive based
nccl: communication pattern. It has been optimized to achieve high bandwidth
nccl: on platforms using PCIe, NVLink, NVswitch, as well as networking using
nccl: InfiniBand Verbs or TCP/IP sockets. NCCL supports an arbitrary number
nccl: of GPUs installed in a single node or across multiple nodes, and can
nccl: be used in either single- or multi-process (e.g., MPI) applications.
nccl: