Visible to Intel only — GUID: GUID-FA006714-BA93-433B-BF49-95DFA5D8BF21
Measuring Communication and Computation Overlap
Measuring Pure Communication Time
Iallgather
Iallgather_pure
Iallgatherv
Iallgatherv_pure
Iallreduce
Iallreduce_pure
Ialltoall
Ialltoall_pure
Ialltoallv
Ialltoallv_pure
Ibarrier
Ibarrier_pure
Ibcast
Ibcast_pure
Igather
Igather_pure
Igatherv
Igatherv_pure
Ireduce
Ireduce_pure
Ireduce_scatter
Ireduce_scatter_pure
Iscatter
Iscatter_pure
Iscatterv
Iscatterv_pure
Visible to Intel only — GUID: GUID-FA006714-BA93-433B-BF49-95DFA5D8BF21
Gather
The benchmark for the MPI_Gather function.
The root process inputs X*np bytes (X from each process). All processes receive X bytes. The root of the operation is changed round-robin algorithm.
Property |
Description |
---|---|
Measured pattern |
MPI_Gather |
MPI data type |
MPI_BYTE |
Root |
i%num_procs in iteration i |
Reported timings |
Bare time |
Reported throughput |
None |