Control the capability of the direct receive in the OFI fabric.
Syntax
I_MPI_OFI_DRECV=<arg>
Arguments
<arg> | Binary indicator |
enable | yes | on | 1 | Enable direct receive. This is the default value |
disable | no | off | 0 | Disable direct receive |
Description
Use the direct receive capability to block MPI_Recv calls only. Before using the direct receive capability, ensure that you use it for single-threaded MPI applications and check if you have selected OFI as the network fabric by setting I_MPI_FABRICS=ofi.
Control the usage of libfabric* shipped with the Intel® MPI Library.
Syntax
I_MPI_OFI_LIBRARY_INTERNAL=<arg>
Arguments
<arg> | Binary indicator |
enable | yes | on | 1 | Use libfabric from the Intel MPI Library |
disable | no | off | 0 | Do not use libfabric from the Intel MPI Library |
Description
Set this environment variable to disable or enable usage of libfabric from the Intel MPI Library. The variable must be set before sourcing the vars.bat script.
> set I_MPI_OFI_LIBRARY_INTERNAL=1 > call <installdir> \env\vars.bat
Setting this variable is equivalent to passing the -ofi_internal option to the vars.bat script.
For more information, refer to the Intel® MPI Library Developer Guide, section Libfabric* Support.