dolfin team mailing list archive

[Harish Narayanan <harish.mlists@xxxxxxxxx>]

Anders Logg wrote:
> On Mon, Sep 14, 2009 at 01:01:43PM +0200, Anders Logg wrote:
>> On Mon, Sep 14, 2009 at 05:47:34AM -0500, Matthew Knepley wrote:
>>> On Mon, Sep 14, 2009 at 4:34 AM, Anders Logg <logg@xxxxxxxxx> wrote:
>>>
>>>     On Mon, Sep 14, 2009 at 11:19:58AM +0200, Garth N. Wells wrote:
>>>     >
>>>     >
>>>     > Anders Logg wrote:
>>>     > > On Mon, Sep 14, 2009 at 11:15:57AM +0200, Garth N. Wells wrote:
>>>     > >>
>>>     > >> Anders Logg wrote:
>>>     > >>> Which is the preferred parallel direct solver? MUMPS or SPOOLES?
>>>     > >>>
>>>     > >> Probably depends on the system, but in my experiences MUMPS has been
>>>     > >> better. However, the Debian/Ubuntu PETSc packages are configured with
>>>     > >> SPOOLES, but not MUMPS.
>>>     > >
>>>     > > ok, I'm trying out MUMPS now.
>>>     > >
>>>     > > Harish: Perhaps --download-mumps=yes should be added to petsc.package
>>>     > > in Dorsal?
>>>     >
>>>     > It requires a few more flags than just '--download-mumps=yes' as you'll
>>>     > soon see ;).
>>>
>>>     Yes...
>>>
>>>     So far, I've added
>>>
>>>      --with-parmetis=1 --with-parmetis-dir=/usr/include/parmetis
>>>     --download-mumps=1
>>>
>>>     But PETSc is complaining about ScaLAPACK. Is it possible to use the
>>>     Debian package? I'm using OpenMPI (from Debian) but
>>>     libscalapack-mpi-dev seems to require mpich.
>>>
>>>     Which is the simplest way to get MUMPS running?
>>>
>>>
>>> --download-scalalpack --download-blacs --download-mumps
>>>
>>> It is really depressing that MUMPS is built on such as crappy package. However,
>>> it is the
>>> best parallel direct solver, and SPOOLES is not actively supported anymore.
>>>
>>> Also, you can only use the packages if you buy into whatever compiler/flag/
>>> package combination
>>> they happened to use. One reason we need the "crazy download stuff".
>>>
>>>    Matt
>> Thanks, I'll try that.
>>
>> I'm very happy PETSc handles this (and Hypre) for me. In an ideal
>> world, there would be decent Debian packages for all this.
> 
> Works fine. Here are the flags I ended up using:
> 
>  COPTFLAGS=-O3 --with-debugging=0 --with-clanguage=cxx --with-shared=1
>  --download-hypre=1 --with-parmetis=1
>  --with-parmetis-dir=/usr/include/parmetis --download-scalapack=1
>  --download-blacs=1 --download-mumps=1

I've added something very similar to the build script now. The only
thing that needs to be checked is whether --with-parmetis-dir=/usr would
suffice.

Harish