On Mon, 1 Feb 2010 17:14:36 -0500, Ryan Yan wrote:
> Hi all,
> I just realized that I do need to work with the implicit form of the DAE.
> For instance, if I need to add a following tendency term "rho(x)*x' ":
>
> rho* x' = - f(t,x))
>
> My question is:
>
> > In order to solve the above system
Ok, now it works. Thanks for the quick fix, Barry.
Christian
> Sorry, there was an error in the case when the preconditioner was
>rebuilt with the same nonzero pattern, an internal matrix was
>mistakenly freed early.
>
>Drop the attached src/ksp/ps/impls/redistribute.c and run make in
>tha
quence.
>>
>> > So, do I have to solve the time-dependent problem after a long time
>> stepping
>> > to get a steady solution? Or is there any better way of finding a good
>> > initial guess?
>>
>> Pseudotransient continuation is somewhat like this, but does it in a
>> clever and adaptive way.
>>
>> Jed
>>
>
>
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