Communication Fabrics Control

I_MPI_FABRICS

Select the particular fabrics to be used.

Syntax

I_MPI_FABRICS=ofi | shm

Arguments

<fabric>

Define a network fabric.

shm

Shared memory transport (used for intra-node communication only).

ofi

OpenFabrics Interfaces* (OFI)-capable network fabrics, such as Intel® True Scale Fabric, Intel® Omni-Path Architecture, InfiniBand*, and Ethernet (through OFI API).

Description

Set this environment variable to select a specific fabric combination.

Note

This option is not applicable to slurm and pdsh bootstrap servers.

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