mpi-bw-latency-tests

Description

OpenMPI (v1.5) bandwith and latency tests:

• 1: Process X sends to process Y bursts of N packets whose size is M bytes.
• 2: Process Y receives them and then sends to process X an integer as acknowledgement.
• 3: Go to 1 until R repetitions of the test are done.
• 4: Measures bandwith, mean latency, worst latency and best latency.

Number of pairs of processes doing the test is parametrized, as well as N (number of packets), M (packet size) and R (number of repetitions).

Multiple implementations of the test:

• One communicator for each pair of processes.
• One communicator for all processes, everyone uses same tag to communicate with its assigned mate.
• One communicator for all processes, each pair of processes uses a unique tag.

Authorship

• Agustín Navarro Torres
• Marcos Canales Mayo