Intel® MPI Library Developer Reference for Windows* OS
I_MPI_OFI_DRECV
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.
I_MPI_OFI_LIBRARY_INTERNAL
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 mpivars.bat script.
Example
> set I_MPI_OFI_LIBRARY_INTERNAL=1
> call <installdir>\intel64\bin\mpivars.bat
Setting this variable is equivalent to passing the -ofi_internal option to the mpivars.bat script.
For more information, refer to the Intel® MPI Library Developer Guide, section Running Applications > Libfabric* Support.