[Getdp] getdp Digest, Vol 91, Issue 4
Zacharie De Grève
zacharie.degreve at umons.ac.be
Mon Oct 11 10:08:09 CEST 2010
Hello Ruth,
It works now, with the two solutions you proposed (umfpack and mumps). Thanks
for your help.
I have tried it on a much bigger mesh (more or less 40000 dofs), with the
command 'getdp <pro-file> -msh <msh-file>' etc. But umfpack still performs
better than mumps (approximately 20% faster).
Maybe it is due to a wrong step/missing option during the compilations of
Petsc and GetDP ? I employed the following commands on a Kubuntu 10.04
distribution:
* Petsc :
1. ./config/configure.py --with-debugging=0 --with-clanguage=cxx --with-shared=0
--with-x=0 --download-mumps=ifneeded --download-parmetis=ifneeded --download-
scalapack=ifneeded --download-blacs=ifneeded --with-scalar-type=complex --
download-openmpi=ifneeded
2. make PETSC_DIR=..._ARCH=linux-gnu-cxx-opt all test
* GetDP
./configure --with-petsc-prefix=... --with-petsc-arch=...
make
Thank you again.
Zacharie
Le vendredi 8 octobre 2010 12:00:01, getdp-request at ace20.montefiore.ulg.ac.be a
écrit :
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> Date: Fri, 08 Oct 2010 09:16:38 +0200
> From: "Ruth V. Sabariego" <r.sabariego at ulg.ac.be>
> Subject: Re: [Getdp] "Zero Pivot in LU factorization" error after
> upgrading
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ATTENTION : nouvel e-mail : zacharie.degreve at umons.ac.be
L'adresse zacharie.degreve at fpms.ac.be restera encore valide quelques temps,
mais n'oubliez pas svp de prendre en compte cette modification. Merci d'avance.
---------------------------------------------------
Ir. Zacharie De Grève
Aspirant FNRS
Service de Génie Electrique
Faculté Polytechnique de Mons - UMons
Bd Dolez, 31
BE - 7000 Mons
Belgique
Tél : +32 65 374125
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