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improve CMake output and README

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This commit is contained in:
Carl Pearson
2021-06-02 17:00:16 -04:00
parent 16de9c455b
commit 286f5c0190
2 changed files with 28 additions and 19 deletions
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27
README.md
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@@ -29,13 +29,25 @@ cmake ..
make
```
CMake will print the MPI environment it is using. For example:
CMake will print the detected MPI environment.
Confirm it is what you expect.
For example:
```
-- MPI_CXX_COMPILER: [...]/spectrum-mpi-10.3.1.2-20200121-p6nrnt6vtvkn356wqg6f74n6jspnpjd2/bin/mpicxx
-- MPI_CXX_INCLUDE_DIRS: [...]/spectrum-mpi-10.3.1.2-20200121-p6nrnt6vtvkn356wqg6f74n6jspnpjd2/include
-- MPIEXEC_EXECUTABLE: [...]/spectrum-mpi-10.3.1.2-20200121-p6nrnt6vtvkn356wqg6f74n6jspnpjd2/bin/mpiexec
-- MPI_VERSION:
-- MPI_CXX_COMPILER: [...]/bin/mpicxx
-- MPI_CXX_COMPILE_OPTIONS: -pthread
-- MPI_CXX_COMPILE_DEFINITIONS:
-- MPI_CXX_INCLUDE_DIRS: [...]/include
-- MPI_CXX_LIBRARIES: [...]/lib/libmpiprofilesupport.so;[...]/lib/libmpi_ibm.so
-- MPI_CXX_LINK_FLAGS: -pthread
```
## Examples
### Summit
* 1 node: `jsrun -n 1 ./persistent`
* 2 nodes: `jsrun -n 2 -r 1 -a 1 ./persistent`
* 2 nodes w/GPU: `jsrun --smpi="-gpu" -n 2 -r 1 -g 1 ./send-recv-gpu`
## Run all tests
@@ -52,13 +64,6 @@ If any tests fails, you can re-run them individually.
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`
* 2 nodes w/GPU: `jsrun --smpi="-gpu" -n 2 -r 1 -g 1 ./send-recv-gpu`
## Notes on specific platforms