KSP quick question

[Matthew Knepley]

2009/9/10 tsjb00 <tsjb00 at hotmail.com>

>  Hi! I have a quick question about KSP solvers. I will use the KSP solver
> to solve a time varying problem. My question is: do I need to call the
> following functions once in initialization, or do I need to call them in the
> time loop (solving equations in each time step)?
>
> The functions I am not sure about include:
> KSPSetOperators
>

 ^^^^^ This is the only one to call in the loop.

  Matt


> KSPGetPC
> PCSetType
> KSPSetType
> KSPSetFromOptions
>
> Many thanks!
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-- 
What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
lead.
-- Norbert Wiener
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