[petsc-users] How can PETSc configure with MSMPI

[Satish Balay]

On Sun, 2 Feb 2014, Jed Brown wrote:

> Satish Balay <balay at mcs.anl.gov> writes:
> 
> > On Sun, 2 Feb 2014, Jed Brown wrote:
> >
> >> Satish Balay <balay at mcs.anl.gov> writes:
> >> 
> >> > You can try --download-mpich [not MSMPI] - if you are using gnu
> >> > compilers on windows.
> >> 
> >> MPICH is no longer supported on Windows (no funding).  They have mailing
> >> list traffic about it almost every day, and recommend using MSMPI or
> >> Intel MPI.
> >
> > 1. I don't htink MSMPI supports cygwin/gcc
> 
> Naturally.
> 
> > 2. [Unsupported] MPICH you refer to - was the version that worked with
> > MS/Intel compilers. Eventhough there was a part of this binary install
> > that was supporsed to work with cygwin/gcc compilers - it never
> > properly worked.
> 
> The MPICH2-1.4 series was the last version that upstream MPICH tested or
> supported on Windows.  They no longer support that version and they no
> longer support Windows in any form (no testing, no user support).
> 
> http://wiki.mpich.org/mpich/index.php/Frequently_Asked_Questions#Q:_Why_can.27t_I_build_MPICH_on_Windows_anymore.3F

Yes - but that has no bearing on cygwin/gnu compiler usage [which was
the scope of this discussion]

> 
> > 3. --download-mpich worked previously with cygwin/gcc [without any any
> > cygwin specific work from MPICH folks]. I'm guessing it will continue
> > to work.
> 
> Only insofar as being POSIX-compliant implies that it will Just Work on
> cygwin.
> 
> > 4. Cygwin has OpenMPI - but I haven't tried that. Presumably that
> > should also work.
> >
> > However wrt the primary issue of this thread - if '--with-threadcomm
> > --with-openmp' is required - then its best to use linux [perhaps via a
> > VirtualMachine]
> 
> Turn off those options for now.

Hence the user got the following message from configure.

-------------------------------------------------------------------------------
External package threadcomm does not work with Microsoft compilers
*******************************************************************************


Satish