[petsc-users] Implementing a homotopy solver

[zakaryah]

Thanks Matt.

>
>
>> 2) Is there a way to reuse the KSP for (1) to efficiently solve (2),
>> given the method which answers question 1) ?
>>
>
> Not really, unless you use some type of factorization for the
> preconditioner.
>

Can you elaborate?
​I know that KSP can efficiently solve linear systems with the same matrix
but different right-hand sides, just by calling KSPSolve successively.
Will this be impossible within the nonlinear solver after calculating the
nullspace?​
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