Issue 296.make test mpi #613
Open
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
`make test` (or `ctest`) behavior of ALPSCore:
| Variable | Default | Usual value | Meaning |
|-----------------------------|-------------------------|----------------|---------|
| `ALPS_TEST_MPIEXEC` | `${MPIEXEC}` | `mpiexec` | MPI launcher |
| `ALPS_TEST_MPI_NROC_FLAG` | `${MPIEXEC_NUMPROC_FLAG}`| `-n` | flag to specify the number of MPI processes |
| `ALPS_TEST_MPI_NPROC` | 1 | 1 | How many MPI processes to launch in MPI-enabled tests |
| `ALPS_TEST_MPIEXEC_PREFLAGS` | `${MPIEXEC_PREFLAGS}` | (empty string) | MPI launcher arguments preceding the executable name |
| `ALPS_TEST_MPIEXEC_POSTFLAGS` | `${MPIEXEC_POSTFLAGS}` | (empty string) | MPI launcher arguments preceding the arguments for the executable |
The `${...}` above are CMake variables, normally set by `FindMPI` module.
Related: issue #211.
This should close #296.
Intended use:
**Case 1: Vanilla MPI-enabled environment.**
The command to run an MPI program using 2 processes: `mpiexec -n 2 some_test`
Setting the variables to run each MPI-enabled tests on 2 processes: `ALPS_TEST_MPI_NPROC=2 make test`
**Case 2: NERSC Cori**
(*Disclaimer:* not tested with an actual Cori run)
Users are not supposed to run `mpiexec`. One has to allocate interactive nodes first.
Allocating 2 Haswell nodes for 30 minutes: `salloc -N 2 -C haswell -q interactive -t 0:30:00`
Command to run on the allocated nodes: `srun some_test`
Setting the variables to run each MPI-enabled tests on the allocated nodes:
`ALPS_TEST_MPIEXEC=srun ALPS_TEST_MPI_NPROC=' ' ALPS_TEST_MPI_NPROC_FLAG=' ' make test`
(note the variables are assigned spaces, not empty strings!)
**Case 3: Blue Waters**
(*Disclaimer:* not tested on actual Blue Waters machine)
The `aprun` command is supposed to be used to launch parallel processes from an interactive node
(see https://bluewaters.ncsa.illinois.edu/using-aprun ).
Command to run on 16 cores, using 8 cores per node (that is, 2 nodes), placing the processes on adjacent cores:
`aprun -N 8 -d 1 -n 16 some_test`
Setting the variables to run each MPI-enabled tests with this configuration:
`ALPS_TEST_MPIEXEC=aprun ALPS_TEST_MPI_NPROC=16 ALPS_TEST_MPI_NPROC_FLAG='-N 8 -d 1 -n' make test`
...and also allow explicitly setting MPI launcher and its parameters to empty strings (in case they should be empty when running tests).
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This commit introduces the following environment variables that affect
make test(orctest) behavior of ALPSCore:ALPS_TEST_MPIEXEC${MPIEXEC}mpiexecALPS_TEST_MPI_NROC_FLAG${MPIEXEC_NUMPROC_FLAG}-nALPS_TEST_MPI_NPROC${ALPS_TEST_MPI_NPROC}ALPS_TEST_MPIEXEC_PREFLAGS${MPIEXEC_PREFLAGS}ALPS_TEST_MPIEXEC_POSTFLAGS${MPIEXEC_POSTFLAGS}The
${...}above are CMake variables, normally set byFindMPImodule.Related: issue #211.
This should close #296.
Intended use:
Case 1: Vanilla MPI-enabled environment.
The command to run an MPI program using 2 processes:
mpiexec -n 2 some_testSetting the variables to run each MPI-enabled tests on 2 processes:
ALPS_TEST_MPI_NPROC=2 make testCase 2: NERSC Cori
(Disclaimer: not tested with an actual Cori run)
Users are not supposed to run
mpiexec. One has to allocate interactive nodes first.Allocating 2 Haswell nodes for 30 minutes:
salloc -N 2 -C haswell -q interactive -t 0:30:00Command to run on the allocated nodes:
srun some_testSetting the variables to run each MPI-enabled tests on the allocated nodes:
ALPS_TEST_MPIEXEC=srun ALPS_TEST_MPI_NPROC=' ' ALPS_TEST_MPI_NPROC_FLAG=' ' make test(note the variables are assigned spaces, not empty strings!)
Case 3: Blue Waters
(Disclaimer: not tested on actual Blue Waters machine)
The
apruncommand is supposed to be used to launch parallel processes from an interactive node(see https://bluewaters.ncsa.illinois.edu/using-aprun ).
Command to run on 16 cores, using 8 cores per node (that is, 2 nodes), placing the processes on adjacent cores:
aprun -N 8 -d 1 -n 16 some_testSetting the variables to run each MPI-enabled tests with this configuration:
ALPS_TEST_MPIEXEC=aprun ALPS_TEST_MPI_NPROC=16 ALPS_TEST_MPI_NPROC_FLAG='-N 8 -d 1 -n' make test