[petsc-users] question about partitioning usage
Dominik Szczerba
dominik at itis.ethz.ch
Wed Jan 25 12:10:51 CST 2012
I recently realized that, independently of my explicitly partitioning
the input mesh, Petsc also employs partitioning somewhere internally.
Is my understanding correct then:
* parmetis is the default even when other partitioners were configured
* for MPIAIJ matrices the employed partitioner must be parallel, e.g.,
parmetis or ptscotch and not sequential, e.g. chaco or party.
Thanks for any clarifications.
PS. I can not configure petsc with --download-ptscotch on any of my
systems, will send configure.log's soon.
Dominik
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