[petsc-users] Solutions different after program restart

[Ataollah Mesgarnejad]

Dear Bojan,

I'm not sure if this relates to your problem but I had a similar situation: I use KSPSetInitialGuessNonzero with GMRES. Setting DIFFERENT_NONZERO_PATTERN in KSPSetOperators solved my problem. 

Best,
Ata;
On Jun 3, 2012, at 10:28 AM, Jed Brown wrote:

> On Sun, Jun 3, 2012 at 10:20 AM, Niceno Bojan <bojan.niceno at psi.ch> wrote:
> I will need some time with -ksp_view_binary.
> 
> The file being created (called "binaryoutput") seems to grow as simulation time steps go by.  It seems to me that all systems solved during a run are stored in the same file.  I am struggling to understand how to pick the one I want to reproduce in ex10.
> 
> Yeah, you can either call MatView() and VecView() yourself or you can use PetscOptionsSetValue("-ksp_view_binary", "1") before the solve. You can also load the whole sequence in Matlab.

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