Igather

The benchmark for MPI_Igather that measures communication and computation overlap.

Property

Description

Measured pattern

MPI_Igather/IMB_cpu_exploit/MPI_Wait

MPI data type

MPI_BYTE

Root

i%num_procs in iteration i

Reported timings

  • t_ovrl
  • t_pure
  • t_CPU
  • overlap=100.*max(0,min(1, (t_pure+t_CPU-t_ovrl) / min(t_pure, t_CPU))

For details, see Measuring Communication and Computation Overlap.

Reported throughput

None