mpi_test

Various standalone MPI binaries, either tests or examples depending on your perspective. The goal is to compile with no warnings with -Wall -Wextra -Wshadow -pedantic or similarly picky settings.

Adjust Makefile to match your environment, if needed

uses mpicxx and a few simple flags by default

Build

make

Run all tests

run-all.sh attempts to discover certain environments automatically. You can always override the detected flags yourself if you want.

./run-all.sh | grep 'PASS\|FAIL'

If any tests fails, you can re-run them individually.

Run individual tests

Execute any binary you want using mpirun, or whatever is appropriate for your platform.

Run Microbenchmarks

persistent (persistent.cpp) ping-pong time for persistent communication.

Notes on specific platforms

Some Open MPIs use long long for their datatypes, which means we can't support ANSI C++ (-ansi).

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