[Trilinos-Users] IFPACK preconditioners reordering

[Heroux, Michael A]

Danielle,

Ifpack supports only Reverse Cuthill-McKee (RCM) and Metis reorderings.

The Isorropia package provides an Epetra interface to Zoltan, and does have orderings based on ParMetis and PT-Scotch, but I don't know of a way to get the orderings to work the Ifpack.  Perhaps one of the Isorropia developers could confirm.

Mike


From: Trilinos-Users <trilinos-users-bounces at trilinos.org<mailto:trilinos-users-bounces at trilinos.org>> on behalf of Danielle Catherine Maddix <dcmaddix at stanford.edu<mailto:dcmaddix at stanford.edu>>
Date: Wednesday, February 17, 2016 at 7:24 PM
To: Trilinos Users <trilinos-users at trilinos.org<mailto:trilinos-users at trilinos.org>>
Subject: [EXTERNAL] [Trilinos-Users] IFPACK preconditioners reordering


Hello,


I was using the IFPACK pre conditioners, with particular interest in IC. I was wondering if there were any built-in Trilinos reordering schemes that could be done for banding on my matrix in the preconditioner calculation.  I know that ILUT and ILUt uses RCM by default. Are there other reordering options, such as nested dissection, which uses Zoltan?


Thank you,

Danielle Maddix
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