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Re: Slow PetscInitialize?

 

On Sun, Oct 14, 2012 at 06:33:55PM +0100, Garth N. Wells wrote:

> > for external_pkg in umfpack hypre mumps scalapack blacs ptscotch
> > scotch metis parmetis; do
> >     CONFOPTS="${CONFOPTS} --download-${external_pkg}=1"
> > done
> >
> > Any of these that should be avoided? Any that should be added for a
> > better PETSc build?
> >
>
> You also have MPI, to which PETSc will make calls. I haven't used the
> Ubuntu OpenMPI package for a long time because I kept finding bugs in
> it (and it doesn't support threads), so now I just build my own MPI
> and don't bother with the MPI package.

I've been trying various options today. I had trouble getting MPICH to
compile on my machine and building OpenMPI gives the same result as
the Ubuntu OpenMPI.

I'm not 100% sure the Ubuntu OpenMPI is not being picked up. I removed
it first but needed to install it again since the boost package
depends on it. Do you use the package for boost or do you install that
locally too?

--
Anders




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