[petsc-users] choosing a preconditioner
craig-tanis at utc.edu
Sat Feb 20 08:21:54 CST 2010
> Nobody can suggest anything unless you tell us something about the
> problem you are solving.
This is a related question, and I apologize if it's too OT: I often find myself just trying a bunch of -pc options to see what appears to work best. I understand the concept of preconditioners, and simple ones like ILU, Jacobi,etc are clear enough.
I am a bit lost when we start talking about eigenvalue methods or preconditioners that require some knowledge of how the matrix is constructed.. can anybody recommend a resource/book for unraveling the mysteries of preconditioners?
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