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| author | Larry Knox <lrknox@hdfgroup.org> | 2019-02-28 20:29:04 (GMT) |
|---|---|---|
| committer | Larry Knox <lrknox@hdfgroup.org> | 2019-02-28 20:29:04 (GMT) |
| commit | 7f797174c7a013359e94d1aa5d6540a5629aa550 (patch) | |
| tree | 0320bfdb5418ab23978afbb1777539270f04c1f2 /release_docs/INSTALL_parallel | |
| parent | 5eef94f83f4875b64ffe7f9cea05d965bddbd802 (diff) | |
| parent | 7eb65dbad45f473a953db595147b88d03f671658 (diff) | |
| download | hdf5-7f797174c7a013359e94d1aa5d6540a5629aa550.zip hdf5-7f797174c7a013359e94d1aa5d6540a5629aa550.tar.gz hdf5-7f797174c7a013359e94d1aa5d6540a5629aa550.tar.bz2 | |
Merge branch 'hdf5_1_10_5' into 1.10/master
Diffstat (limited to 'release_docs/INSTALL_parallel')
| -rwxr-xr-x | 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 100755 --- 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 ---------------------- |