Intel® MPI Benchmarks User Guide and Methodology Description

# Running Benchmarks in Multiple Mode

Intel® MPI Benchmarks provides a set of elementary MPI benchmarks.

You can run all benchmarks in the following modes:

- Standard (default) – the benchmarks run in a single process group.

- Multiple – the benchmarks run in several process groups.

To run the benchmarks in the multiple mode, add the `multi-` prefix to the benchmark name.

In the multiple mode, the number of groups may differ depending on the benchmark. For example, if `PingPong` is running on N≥4 processes, N/2 separate groups of two processes are formed. These process groups are running `PingPong` simultaneously. Thus, the benchmarks of the single transfer class behave as parallel transfer benchmarks when run in the multiple mode.

## See Also

Classification of MPI-1 Benchmarks
Classification of MPI-2 Benchmarks
MPI-3 Benchmarks