Hello OpenMPI team, Thank you for the insightful feedback. I am not claiming in any way that it is a meaningful practice to build the OpenMPI stack with one compiler and then just try to convince / force it to use another compilation environment to build MPI applications. There are occasions though that one *may only have an OpenMPI* stack built, say, by GNU compilers but for efficiency of execution of the resulting MPI applications try to use Intel / PGI compilers with the same OpenMPI stack to compile MPI applications.
It is too much unnecessary trouble to use the same MPI stack with different compilation environments. Thank you, Michael On Mon, Sep 18, 2017 at 7:35 PM, Gilles Gouaillardet < gilles.gouaillar...@gmail.com> wrote: > Even if i do not fully understand the question, keep in mind Open MPI > does not use OpenMP, so from that point of view, Open MPI is > independant of the OpenMP runtime. > > Let me emphasize on what Jeff already wrote : use different installs > of Open MPI (and you can use modules or lmod in order to choose > between them easily) and always use the compilers that were used to > build Open MPI. This is mandatory is you use Fortran bindings (use mpi > and use mpi_f08), and you'd better keep yourself out of trouble with > C/C++ and mpif.h > > Cheers, > > Gilles > > On Tue, Sep 19, 2017 at 5:57 AM, Michael Thomadakis > <drmichaelt7...@gmail.com> wrote: > > Thanks for the note. How about OMP runtimes though? > > > > Michael > > > > On Mon, Sep 18, 2017 at 3:21 PM, n8tm via users < > users@lists.open-mpi.org> > > wrote: > >> > >> On Linux and Mac, Intel c and c++ are sufficiently compatible with gcc > and > >> g++ that this should be possible. This is not so for Fortran libraries > or > >> Windows. > >> > >> > >> > >> > >> > >> > >> Sent via the Samsung Galaxy S8 active, an AT&T 4G LTE smartphone > >> > >> -------- Original message -------- > >> From: Michael Thomadakis <drmichaelt7...@gmail.com> > >> Date: 9/18/17 3:51 PM (GMT-05:00) > >> To: users@lists.open-mpi.org > >> Subject: [OMPI users] Question concerning compatibility of languages > used > >> with building OpenMPI and languages OpenMPI uses to build MPI binaries. > >> > >> Dear OpenMPI list, > >> > >> As far as I know, when we build OpenMPI itself with GNU or Intel > compilers > >> we expect that the subsequent MPI application binary will use the same > >> compiler set and run-times. > >> > >> Would it be possible to build OpenMPI with the GNU tool chain but then > >> subsequently instruct the OpenMPI compiler wrappers to use the Intel > >> compiler set? Would there be any issues with compiling C++ / Fortran or > >> corresponding OMP codes ? > >> > >> In general, what is clean way to build OpenMPI with a GNU compiler set > but > >> then instruct the wrappers to use Intel compiler set? > >> > >> Thanks! > >> Michael > >> > >> _______________________________________________ > >> users mailing list > >> users@lists.open-mpi.org > >> https://lists.open-mpi.org/mailman/listinfo/users > > > > > > > > _______________________________________________ > > users mailing list > > users@lists.open-mpi.org > > https://lists.open-mpi.org/mailman/listinfo/users > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/users >
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