Intel® MPI Library Developer Reference for Linux* OS
Select the particular fabrics to be used.
Syntax
I_MPI_FABRICS=ofi | shm:ofi
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.
To enable a shared memory transport, use I_MPI_FABRICS=shm:ofi. In the multiple endpoints mode, the default value ofi cannot be changed.
DAPL, TMI, and OFA fabrics are deprecated.
This option is not applicable to slurm, pdsh, and persist bootstrap servers.