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
Accumulate
This is the benchmark for the MPI_Accumulate function. It reduces a vector of length L = x/sizeof(float) of float items. The MPI data type is MPI_FLOAT. The MPI operation is MPI_SUM. See the basic definitions and a schematic view of the pattern below.
Accumulate Definition
Property |
Description |
---|---|
Measured pattern |
As symbolized between |
MPI data type |
MPI_FLOAT |
MPI operation |
MPI_SUM |
Root |
0 |
Reported timings |
t=t(M) (in μsec) as indicated in the figure below, non-aggregate (M=1)and aggregate (M=n_sample). For details, see Actual Ben chmarking. |
Reported throughput |
None |
Accumulate Pattern
