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From: Barry Smith (bsmith_at_[hidden])
Date: 2006-12-30 16:40:55


  OPEN MPI folks,

   Please see the possible error in your code, if this is indeed an error
on your part we would appreciate a fix as soon as possible so that we do
not have to direct our users to other MPI implementations.

   Thanks

    Barry

On Fri, 29 Dec 2006, Satish Balay wrote:

> Looks like there is some issues with MPI_Spawn() and OpenMPI.
>
> >>>>>
> libfast in: /Volumes/MaxtorUFS1/geoframesvn/tools/petsc-dev/src/sys/objects
> mpinit.c: In function 'PetscErrorCode PetscOpenMPSpawn(PetscMPIInt)':
> mpinit.c:73: error: invalid conversion from 'void*' to 'int*'
> mpinit.c:73: error: initializing argument 8 of 'int MPI_Comm_spawn(char*, char**, int, ompi_info_t*, int, omp
> i_communicator_t*, ompi_communicator_t**, int*)'
> ar: mpinit.o: No such file or directory
> <<<<<<
>
> ierr = MPI_Comm_spawn(programname,argv,nodesize-1,MPI_INFO_NULL,0,PETSC_COMM_SELF,&children,MPI_ERRCODES_IGNORE);CHKERRQ(ierr);
>
>
> Looks like using MPI_ERRCODES_IGNORE in that function call is
> correct. However OpenMPI declares it to '((void *) 0)' giving compile
> error with c++. [MPICH declares it to '(int *)0' - which doesn't give
> any compile erorrs].
>
> I guss the following change should work - but I suspect this is an
> openmpi bug.. I don't think its appropriate to make this change in
> PETSc code..
>
> ierr = MPI_Comm_spawn(programname,argv,nodesize-1,MPI_INFO_NULL,0,PETSC_COMM_SELF,&children,(int*) MPI_ERRCODES_IGNORE);CHKERRQ(ierr);
>
> Satish
>
> On Fri, 29 Dec 2006, Charles Williams wrote:
>
> > Hi,
> >
> > I'm not sure if this is a problem with PETSc or OpenMPI. Things were building
> > OK on December 19, and this problem has crept in since then. Thanks for any
> > ideas.
> >
> > Thanks,
> > Charles
> >
> >
> >
> > Charles A. Williams
> > Dept. of Earth & Environmental Sciences
> > Science Center, 2C01B
> > Rensselaer Polytechnic Institute
> > Troy, NY 12180
> > Phone: (518) 276-3369
> > FAX: (518) 276-2012
> > e-mail: willic3_at_[hidden]
> >
> >
>
>

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