Select the particular fabrics to be used.
Syntax
I_MPI_FABRICS=ofi | shm: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® Omni-Path Architecture, InfiniBand*, and Ethernet (through OFI API). |
Description
Set this environment variable to select a specific fabric combination.
The default values are shm:ofi for the regular mode and ofi for the multiple endpoints mode. In the multiple endpoints mode, the default value ofi cannot be changed.
This option is not applicable to slurm and pdsh bootstrap servers.
DAPL, TMI, and OFA fabrics are deprecated.