[petsc-users] choosing a preconditioner

[Craig Tanis]

> 
> 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?  

thanks,
Craig