Get_all_local

This benchmark tests the MPI_Get operation where one active process obtains data from all other processes. All target processes are waiting in the MPI_Barrier call, while the active process performs the transfers. The completion of the origin process is ensured by the MPI_Win_flush_local_all operation. Since local completion of the MPI_Get operation is semantically equivalent to a regular completion, the benchmark flow is very similar to the One_get_all benchmark.

NOTE

This benchmark is not enabled in IMB-RMA by default. Specify the benchmark name in the command line or use the –include command-line parameter to run this benchmark.

Property

Description

Measured pattern

(N*MPI_Get)/MPI_Win_flush_local_all, where N is the number of target processes

MPI data type

MPI_BYTE (origin and target)

Reported timings

Bare time

Reported throughput

MBps

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