PingPing, PingPingSpecificSource, PingPingAnySource

PingPing, PingPingSpecificSource, and PingPingAnySource measure startup and throughput of single messages that are obstructed by oncoming messages. To achieve this, two processes communicate with each other using MPI_Isend/MPI_Recv/MPI_Wait calls. The MPI_Isend calls are issued simultaneously by both processes. For destination rank, PingPingAnySource uses the MPI_ANY_SOURCE value, while PingPing and PingPingSpecificSource use an explicit value.

PingPing Definition

Property

Description

Measured pattern

As symbolized between in the figure below. This benchmark runs on two active processes (Q=2).

MPI routines

MPI_Isend/MPI_Wait, MPI_Recv

MPI data type

MPI_BYTE

Reported timings

time=Δt (in μsec)

Reported throughput

X/time

PingPing Pattern