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From: Anthony Chan (chan_at_[hidden])
Date: 2007-06-08 13:04:48


On Fri, 8 Jun 2007, Jeff Squyres wrote:

> Would it be helpful if we provided some way to link in all the MPI
> language bindings?
>
> Examples off the top of my head (haven't thought any of these through):
>
> - mpicxx_all ...
> - setenv OMPI_WRAPPER_WANT_ALL_LANGUAGE_BINDINGS
> mpicxx ...
> - mpicxx -ompi:all_languages ...
>

Maybe this wrapper should be called "mpild" or "mpilinker".

A.Chan

>
> On Jun 6, 2007, at 12:05 PM, Lie-Quan Lee wrote:
>
> > Hi Jeff,
> >
> > Thanks for willing to put more thought on it. Here is my simplified
> > story. I have an accelerator physics code, Omega3P that is to perform
> > complex eigenmode analysis. The algorithm for solving eigensystems
> > makes use of a 3rd-party sparse direct solver called MUMPS (http://
> > graal.ens-lyon.fr/MUMPS/). Omega3P is written in C++ with MPI. MUMPS
> > is written in Fortran 95 with MPI fortran binding. And MUMPS requires
> > ScaLAPACK and BLACS. (sometime the vendor provides a scientific
> > library that includes BLACS and ScaLAPACK). They are both written in
> > Fortran 77 with MPI Fortran binding.
> >
> > I often need to compile them in various computer platforms with
> > different compilers for variety of reasons.
> > As I mentioned before, I use C++ compiler to link the final
> > executable. That will require MPI Fortran libraries and general
> > Fortran libraries.
> >
> > What I did to solve the above problem is, I have a configure script
> > in which I will detect the compiler and the platform, based on that I
> > will add compiler and platform specific flags for the Fortran related
> > stuff (libraries and library path). This does well until it hit next
> > new platform/compiler...
> >
> > Some compilers made the above job slightly easier. For example in
> > Pathscale compiler collection, it provides -lpathfortran for all what
> > I need to link the executable using c++ compiler with fortran
> > compiled libraries. So is IBM visual age compiler set if the wraper
> > compilers (mpcc_r, mpf90_r) are used. The library name (-lxlf90_r) is
> > different, though.
> >
> >
> > best regards,
> > Rich Lee
> >
> >
> > On Jun 6, 2007, at 4:16 AM, Jeff Squyres wrote:
> >
> >> On Jun 5, 2007, at 11:17 PM, Lie-Quan Lee wrote:
> >>
> >>> it is a quite of headache for each compiler/platform to deal with
> >>> mixed language
> >>> issues. I have to compile my application on IBM visual age
> >>> compiler,
> >>> Pathscale, Cray X1E compiler,
> >>> intel/openmpi, intel/mpich, PGI compiler ...
> >>> And of course, openmpi 1.1 is different on this comparing with
> >>> openmpi 1.2.2 (-lmpi_f77 is new to 1.2.2 version). :-)
> >>
> >>> You are right. MPI forum most like will not take care of this. I
> >>> just
> >>> made a wish ... :-)
> >>
> >> Understood; I know it's a pain. :-(
> >>
> >> What I want to understand, however, is what you need to do. It seems
> >> like your needs are a bit different than those of the mainstream --
> >> is there a way that we can support you directly instead of forcing
> >> you to a) identify openmpi, b) call mpi<foo> --showme:link to get the
> >> relevant flags, and c) stitch them together in the manner that you
> >> need?
> >>
> >> We take great pains to ensure that the mpi<foo> wrapper compilers
> >> "just work" for all the common cases in order to avoid all the "you
> >> must identify which MPI you are using" kinds of games. Your case
> >> sounds somewhat unusual, but perhaps there's a way we can get the
> >> information to you in a more direct manner...?
> >>
> >> --
> >> Jeff Squyres
> >> Cisco Systems
> >>
> >> _______________________________________________
> >> users mailing list
> >> users_at_[hidden]
> >> http://www.open-mpi.org/mailman/listinfo.cgi/users
> >
> > _______________________________________________
> > users mailing list
> > users_at_[hidden]
> > http://www.open-mpi.org/mailman/listinfo.cgi/users
>
>
> --
> Jeff Squyres
> Cisco Systems
>
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