[petsc-users] saving results

[Sal Am]

This is how I run it:

-ksp_type bcgs -pc_type gamg -mattransposematmult_via scalable
-build_twosided allreduce -ksp_monitor_true_residual
-ksp_monitor_if_not_converged -log_view -ksp_max_it 100000 -ksp_rtol 1.0e-7

so BCGS with GAMG as preconditioner. I am guessing writing at every
timestep would be expensive, maybe every hour? I am not sure what would be
a good number here if the simulations lasts more than a day.



On Mon, Feb 18, 2019 at 4:10 PM Jed Brown <jed at jedbrown.org> wrote:

> What kind of solver are you using and how often do you want to write?
>
> Sal Am via petsc-users <petsc-users at mcs.anl.gov> writes:
>
> > Is there a function/command line option to save the solution as it is
> > solving (and read in the file from where it crashed and keep iterating
> from
> > there perhaps)?
> > Had a seg fault and all the results until that point seems to have been
> > lost.
>
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