[petsc-dev] DD FAQ
jed at 59A2.org
Mon Apr 26 09:03:26 CDT 2010
The FAQ mentions PCNN, but the advice "-pc_type nn" is completely
inadequate to actually use this method, and the referenced example does
not exist. I have removed it's mention from the "Domain Decomposition"
answer, I think it needs a working example in order to be mentioned
there. Also, ex2 -pc_type nn -mat_type fails with a seg-fault, I
haven't investigated why.
Barry, PCEXOTIC does have a working example, should it be mentioned
here, or do you consider it to be a toy that users needn't bother trying
As for future DD directions, have you thought about what is necessary to
provide quasi-generic support for optimized Schwarz. I was only vaguely
aware of this method until recently, but this approach seems to offer
significant potential, especially for some indefinite problems.
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