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PingPong Communications Performance Tests

In this program increasing sized messages are sent back and forth between processes--this is commonly called PingPong. This benchmark is based on standard blocking MPI_Send and MPI_Recv. PingPong provides information about latency of MPI_Send and MPI_Recv and uni-directional bandwidth. To ensure that anomalies in message timings are minimized the PingPong is repeated many times for each message size. The codes used for these tests were those developed by Baker and Grassl [#!PINGPONG!#]. The three existing codes (MPI-C, MPI-Fortran and Winsock-C) were used for comparison and we implemented an mpiJava version for our purposes.

The performance tests shown in the next section were run on two similar systems:

Both systems were connected via 10BaseT Ethernet and the tests were carried out when there was little network activity and on quiet machines.


next up previous contents
Next: Message Startup Latencies Up: Simple Communications Performance Measurement Previous: Simple Communications Performance Measurement   Contents
Bryan Carpenter 2004-06-09