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| author | David Young <dyoung@hdfgroup.org> | 2019-12-09 16:30:58 (GMT) |
|---|---|---|
| committer | David Young <dyoung@hdfgroup.org> | 2019-12-09 16:30:58 (GMT) |
| commit | c8f533cfc33ac743227cbed8eba361c715a2976f (patch) | |
| tree | bcae5320f80bac774647cacbbd8493604f9384d2 /release_docs/INSTALL_parallel | |
| parent | adcf8a315e82c0848d126e7e46b662930c081896 (diff) | |
| download | hdf5-c8f533cfc33ac743227cbed8eba361c715a2976f.zip hdf5-c8f533cfc33ac743227cbed8eba361c715a2976f.tar.gz hdf5-c8f533cfc33ac743227cbed8eba361c715a2976f.tar.bz2 | |
Merge all of my changes from merge-back-to-feature-vfd_swmr-attempt-1,
including the merge of `hdffv/hdf5/develop`, back to the branch that Vailin and
I share.
Now I need to put this branch on a fork with a less confusing name than
vchoi_fork!
Diffstat (limited to 'release_docs/INSTALL_parallel')
| -rw-r--r-- | release_docs/INSTALL_parallel | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/release_docs/INSTALL_parallel b/release_docs/INSTALL_parallel index f32fffc..d3d7830 100644 --- a/release_docs/INSTALL_parallel +++ b/release_docs/INSTALL_parallel @@ -102,7 +102,7 @@ qsub -I -q debug -l mppwidth=8 - configure HDF5: RUNSERIAL="aprun -q -n 1" RUNPARALLEL="aprun -q -n 6" FC=ftn CC=cc /path/to/source/configure --enable-fortran --enable-parallel --disable-shared - RUNSERIAL and RUNPARALLEL tells the library how it should launch programs that are part of the build procedure. + RUNSERIAL and RUNPARALLEL tell the library how it should launch programs that are part of the build procedure. - Compile HDF5: gmake @@ -155,12 +155,16 @@ to run a parallel application on one processor and on many processors. If the compiler is `mpicc' and the user hasn't specified values for RUNSERIAL and RUNPARALLEL then configure chooses `mpiexec' from the same directory as `mpicc': - RUNSERIAL: /usr/local/mpi/bin/mpiexec -np 1 - RUNPARALLEL: /usr/local/mpi/bin/mpiexec -np $${NPROCS:=6} + RUNSERIAL: mpiexec -n 1 + RUNPARALLEL: mpiexec -n $${NPROCS:=6} The `$${NPROCS:=6}' will be substituted with the value of the NPROCS environment variable at the time `make check' is run (or the value 6). +Note that some MPI implementations (e.g. OpenMPI 4.0) disallow oversubscribing +nodes by default so you'll have to either set NPROCS equal to the number of +processors available (or fewer) or redefine RUNPARALLEL with appropriate +flag(s) (--oversubscribe in OpenMPI). 4. Parallel test suite ---------------------- |