11.2. Networking support

Open MPI supports a variety of different networking transports for off-node communication. Not all transports are supported or available on every platform. Many require specialized hardware, operating system drivers, and/or userspace network transport libraries.

When Open MPI is being configured, it will search for a variety of network transport libraries (and corresponding development header files). By default, if configure can find a network transport library and its development header files, it will include support for that library. If configure does not find a library or its header files, it will simply skip that library (and Open MPI will simply not build support for that library).

Note

The sections listed below are by no means comprehensive.

• 11.2.1. OpenFabrics Interfaces (OFI) / Libfabric support
• 11.2.2. TCP
• 11.2.3. Shared Memory
• 11.2.4. InifiniBand / RoCE support
• 11.2.5. iWARP Support
• 11.2.6. CUDA
• 11.2.7. ROCm