Intel® MPI Library Reference Manual for Linux* OS
Use this option to select an RDMA-capable network fabric. The application attempts to use the first available RDMA-capable network fabric from the list: dapl,ofa. If no such fabric is available, another fabric from the list tcp,tmi,ofi is used. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST dapl,ofa,tcp,tmi,ofi -genv I_MPI_FALLBACK 1.
Use this option to select an RDMA-capable network fabric. The application attempts to use the first available RDMA-capable network fabric from the list: dapl,ofa. The application fails if no such fabric is found. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST dapl,ofa -genv I_MPI_FALLBACK 1.
Use this option to select a DAPL-capable network fabric. The application attempts to use a DAPL-capable network fabric. If no such fabric is available, another fabric from the list tcp,tmi,ofa,ofi is used. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST dapl,tcp,tmi,ofa,ofi -genv I_MPI_FALLBACK 1.
Use this option to select a DAPL-capable network fabric. The application fails if no such fabric is found. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST dapl -genv I_MPI_FALLBACK 0.
Use this option to select an OFA-capable network fabric. The application attempts to use an OFA-capable network fabric. If no such fabric is available, another fabric from the list dapl,tcp,tmi,ofi is used. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST ofa,dapl,tcp,tmi,ofi -genv I_MPI_FALLBACK 1.
Use this option to select an OFA-capable network fabric. The application fails if no such fabric is found. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST ofa -genv I_MPI_FALLBACK 0.
Use this option to select a TMI-capable network fabric. The application attempts to use a TMI-capable network fabric. If no such fabric is available, another fabric from the list dapl,tcp,ofa,ofi is used. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST tmi,dapl,tcp,ofa,ofi -genv I_MPI_FALLBACK 1.
Use this option to select a TMI-capable network fabric. The application fails if no such fabric is found. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST tmi -genv I_MPI_FALLBACK 0.
Use this option to select the Myrinet MX* network fabric. The application attempts to use the Myrinet MX* network fabric. If no such fabric is available, another fabric from the list dapl,tcp,ofa,ofi is used. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST tmi,dapl,tcp,ofa,ofi -genv I_MPI_TMI_PROVIDER mx -genv I_MPI_DAPL_PROVIDER mx -genv I_MPI_FALLBACK 1.
Use this option to select Myrinet MX* network fabric. The application fails if no such fabric is found. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST tmi -genv I_MPI_TMI_PROVIDER mx -genv I_MPI_FALLBACK 0.
Use this option to select a PSM-capable network fabric: Intel® True Scale Fabric or Intel® Omni-Path Fabric in PSM-compatibility mode. The application attempts to use a PSM-capable network fabric. If no such fabric is available, another fabric from the list dapl,tcp,ofa,ofi is used. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST tmi,dapl,tcp,ofa,ofi -genv I_MPI_TMI_PROVIDER psm -genv I_MPI_FALLBACK 1.
Use this option to select a PSM-capable network fabric: Intel® True Scale Fabric or Intel® Omni-Path Fabric in PSM-compatibility mode. The application fails if no such fabric is found. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST tmi -genv I_MPI_TMI_PROVIDER psm -genv I_MPI_FALLBACK 0.
Use this option to select the Intel® Omni-Path Fabric. The application attempts to use the Intel® Omni-Path Fabric. If no such fabric is available, another fabric from the list dapl,tcp,ofa,ofi is used. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST tmi,dapl,tcp,ofa,ofi -genv I_MPI_TMI_PROVIDER psm2 -genv I_MPI_FALLBACK 1.
Use this option to select the Intel® Omni-Path Fabric. The application fails if no such fabric is found. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST tmi -genv I_MPI_TMI_PROVIDER psm2 -genv I_MPI_FALLBACK 0.
Use this option to select an OpenFabrics Interfaces* (OFI*) capable network fabric. The application attempts to use an OFI-capable network fabric. If no such fabric is available, another fabric from the list tmi,dapl,tcp,ofa is used. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST ofi,tmi,dapl,tcp,ofa -genv I_MPI_FALLBACK 1.
-OFI
Use this option to select an OFI-capable network fabric. The application fails if no such fabric is found. This option is equivalent to the setting: -genv I_MPI_FABRICS_LIST ofi -genv I_MPI_FALLBACK 0.