mpi_test
Various standalone C++ MPI tests/examples/benchmarks.
If CUDA is detected, additional binaries can be built.
| name | Kind | Reqs. | Ranks | Description |
|---|---|---|---|---|
hello-world |
Test | MPI | 1+ | an MPI hello-world |
one-sided |
Test | MPI | 2 | one-sided communication |
one-sided-gpu |
Test | MPI+CUDA | 2 | one-sided communication on GPU buffer |
persistent |
Benchmark | MPI | 2 | ping-pong time for persistent Send/Recv |
send-recv |
Benchmark | MPI | 2 | ping-pong time for Send/Recv |
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.
Examples
Summit
1 node: jsrun -n 1 ./persistent
2 nodes: jsrun -n 2 -r 1 -a 1 ./persistent
Notes on specific platforms
Some Open MPIs use long long for their datatypes, which means we can't support ANSI C++ (-ansi).