[petsc-users] petsc4py and python's logging module

[Lisandro Dalcin]

On 29 May 2017 at 19:17, David Nolte <dnolte at dim.uchile.cl> wrote:
> Dear all,
>
> is it possible to use python's logging module
> (https://docs.python.org/2/howto/logging.html) to handle PETSc output in
> python, such as the residuals during a KSP/SNES solve?
> I log my solver's activity to a file using the logging module, it would
> be great to include the PETSc output aswell.
>

Not sure if this is what you really want, but you could...

1) Use {ksp|snes}.setConvergenceHistory() before solve, then
{ksp|snes}.getConvergenceHistory() after solve, you will get arrays
with the residual history, then you can do whatever you want with
them.

2) Implement a KSP/SNES monitor in a Python function and call
{ksp|snes}.setMonitor(), then you can use python's logging inside your
monitor function.


-- 
Lisandro Dalcin
============
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