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Visible to Intel only — GUID: GUID-7F4A9A84-3C9C-4BCD-A996-80AAAD6F6F66
Visible to Intel only — GUID: GUID-7F4A9A84-3C9C-4BCD-A996-80AAAD6F6F66
Libfabric* Support
The Intel® MPI Library switched from the Open Fabrics Alliance* (OFA) framework to the Open Fabrics Interfaces* (OFI) framework and currently supports libfabric*.
Enabling Libfabric Support
By default, the script that sets the environmental variables (vars.bat) sets the environment to libfabric shipped with the Intel MPI Library. To disable this, use the I_MPI_OFI_LIBRARY_INTERNAL environment variable or the -i_mpi_ofi_internal option passed to the script:
# Do not set the environment to libfabric from the Intel MPI Library. > call <install-dir>\env\vars.bat -i_mpi_ofi_internal=0 # Set the environment to libfabric from the Intel MPI Library. > call <install-dir>\env\vars.bat -i_mpi_ofi_internal=1
Example
> set I_MPI_DEBUG=1 > mpiexec -n 2 IMB-MPI1 pingpong [0] MPI startup(): libfabric version: 1.5.3-impi [0] MPI startup(): libfabric provider: sockets ...
Supported Providers
- tcp
- netdir
See Also
- Intel® MPI LIbrary 2019 over libfabric
- "OFI-Capable Network Fabrics Control" in the Intel MPI Library Developer Reference