11.3. Accelerator support

Open MPI supports a variety of different accelerator vendor eco-systems. This section provides some generic guidance on tuning MPI applications that use device memory, as well as vendor specific options.

• 11.3.1. Selecting an Accelerator Device before calling MPI_Init
• 11.3.2. Support for Memory-kind Info Objects
• 11.3.3. Passing memory-kind info to mpiexec
• 11.3.4. Asserting usage of memory kind when creating a Communicator
• 11.3.5. CUDA
• 11.3.6. ROCm