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
S_[ACTION]_expl
This benchmark mimics the same situation as S_[ACTION]_indv, with a different strategy to access files. See the basic definitions and a schematic view of the pattern below.
S_[ACTION]_expl Definition
Property |
Description |
---|---|
Measured pattern |
As symbolized in the figure I/O benchmarks, aggregation for output |
Elementary I/Oaction |
As symbolized in the figure below. |
MPI routines for theblocking mode |
MPI_File_write_a t/MPI_File_read_at |
MPI routines for thenonblocking mode |
MPI_File_iwrite_at /MPI_File_iread_at |
etype |
MPI_BYTE |
File type |
MPI_BYTE |
MPI data type |
MPI_BYTE |
Reported timings |
t (in μsec) as indicated in the figure I/O benchmarks, aggregation for output, aggregate and non-aggregate for the Write flavor. |
Reported throughput |
x/t, aggregate and non-aggregate for the Write flavor |
S_[ACTION]_expl pattern
