mpi_test/README.md

mpi_test

Various standalone MPI binaries, either tests or examples depending on your perspective.

Build

mkdir build && cd build
cmake ..
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).