How do I check the version of MPICH?

Question

As stated in the question, what is the command that lists the current version of MPICH? I am running CentOS.

Answer 1

I find that mpichversion, which is found in the directory as mpicc, provides very useful information. For example, on my laptop, it displays:

$ mpichversion
MPICH Version:      3.2b1
MPICH Release date: unreleased development copy
MPICH Device:       ch3:nemesis
MPICH configure:    CC=gcc-4.9 CXX=g++-4.9 FC=gfortran-4.9 F77=gfortran-4.9 
                    --enable-cxx --enable-fortran --enable-threads=runtime 
                    --enable-g=dbg --with-pm=hydra 
                    --prefix=/opt/mpich/dev/gcc/default 
                    --enable-wrapper-rpath --enable-static --enable-shared
MPICH CC:   gcc-4.9    -g -O2
MPICH CXX:  g++-4.9   -g -O2
MPICH F77:  gfortran-4.9   -g -O2
MPICH FC:   gfortran-4.9   -g -O2

Note that I reformatted the output slightly (I added whitespace, nothing else) so that it would fit nicely into the fixed column format without requiring a slider.

Note that this provides less information than the previously suggested mpiexec --version, but the configure flags are given in a slightly less useful format, at least for my purposes (copy-and-paste into new configure invocation).

$ mpiexec --version
HYDRA build details:
    Version:                                 3.2b1
    Release Date:                            unreleased development copy
    CC:                              gcc-4.9    
    CXX:                             g++-4.9    
    F77:                             gfortran-4.9   
    F90:                             gfortran-4.9   
    Configure options:                       '--disable-option-checking' '--prefix=/opt/mpich/dev/gcc/default' 'CC=gcc-4.9' 'CXX=g++-4.9' 'FC=gfortran-4.9' 'F77=gfortran-4.9' '--enable-cxx' '--enable-fortran' '--enable-threads=runtime' '--enable-g=dbg' '--with-pm=hydra' '--enable-wrapper-rpath' '--enable-static' '--enable-shared' '--cache-file=/dev/null' '--srcdir=../../../../src/pm/hydra' 'CFLAGS= -g -O2' 'LDFLAGS= ' 'LIBS=-lpthread ' 'CPPFLAGS= -I/Users/jrhammon/Work/MPI/MPICH/git/build/src/mpl/include -I/Users/jrhammon/Work/MPI/MPICH/git/src/mpl/include -I/Users/jrhammon/Work/MPI/MPICH/git/src/openpa/src -I/Users/jrhammon/Work/MPI/MPICH/git/build/src/openpa/src -D_REENTRANT -I/Users/jrhammon/Work/MPI/MPICH/git/build/src/mpi/romio/include'
    Process Manager:                         pmi
    Launchers available:                     ssh rsh fork slurm ll lsf sge manual persist
    Topology libraries available:            hwloc
    Resource management kernels available:   user slurm ll lsf sge pbs cobalt
    Checkpointing libraries available:       
    Demux engines available:                 poll select

(I did not reformat this output.)

One benefit of mpichversion is that, because it is specific to MPICH (and possibly some MPICH derivatives), you can write a more specific parser for it. I do not know what, if any, information is available from mpiexec --version for OpenMPI or other non-MPICH MPI implementations.