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Carl William Pearson
2021-06-02 11:08:25 -06:00
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# mpi_test
Various standalone MPI binaries, either tests or examples depending on your perspective.
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 |
## Build
```
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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`).