> I will switch off monitor after first linear solution phase using > KSPMonitorCancel. SNESSetFromOptions should set up it once again Unfortunately this is not working.
> On 28 Oct 2009, at 16:40, Barry Smith <bsmith at mcs.anl.gov> wrote: > >> >> You are calling SNESSetFromOptions() or KSPSetFromOptions() twice. >> If you call it once the problem won't appear. >> >> There is an extremely ugly hack that is implemented for the >> default monitor, but not other monitors, to prevent this double >> printing. Whoever wrote this ugly hack should have done it properly. >> >> Barry >> >> On Oct 28, 2009, at 2:39 AM, Lukasz Kaczmarczyk wrote: >> >>> Hi Matt >>> >>> I add monitor from options only. >>> >>> Pleas note that for default KSP monitor a norm of preconditioned >>> residual is printed only once. Problem exists when I monitor true >>> residuals. >>> >>> Regards, >>> Lukasz >>> >>> >>> >>> On 27 Oct 2009, at 23:23, Matthew Knepley <knepley at gmail.com> wrote: >>> >>>> It is possible to add the monitor twice. Are you sure this did >>>> not happen? >>>> >>>> Thanks, >>>> >>>> Matt >>>> >>>> On Tue, Oct 27, 2009 at 6:19 PM, Lukasz Kaczmarczyk <likask at >>>> civil.gla.ac.uk >>>> > wrote: >>>> Hello, >>>> >>>> I have noticed minor problem, potentially bug. For nonlinear >>>> analysis with SNES and option -ksp_monitor_true_residual I get >>>> 0 Norm Res_strain 9.36e-12 Norm Res_stress 1.43e-05 Internal >>>> its 1 >>>> 0 SNES Function norm 1.428489691212e-05 >>>> 0 KSP preconditioned resid norm 7.213823259362e-04 true resid >>>> norm 1.428489691212e-05 ||Ae||/||Ax|| 1.000000000000e+00 >>>> 0 KSP preconditioned resid norm 7.213823259362e-04 true resid >>>> norm 1.428489691212e-05 ||Ae||/||Ax|| 1.000000000000e+00 >>>> 1 KSP preconditioned resid norm 4.903423697449e-04 true resid >>>> norm 9.339595309685e-06 ||Ae||/||Ax|| 6.538090801174e-01 >>>> 1 KSP preconditioned resid norm 4.903423697449e-04 true resid >>>> norm 9.339595309685e-06 ||Ae||/||Ax|| 6.538090801174e-01 >>>> >>>> It look that function KSPMonitorTrueResidualNorm is evaluated >>>> twice, whereas for default KSP monitor only once. I use >>>> petsc-3.0.0-p7. >>>> >>>> Kind regards, >>>> Lukasz >>>> >>>> >>>> >>>> -- >>>> What most experimenters take for granted before they begin their >>>> experiments is infinitely more interesting than any results to >>>> which their experiments lead. >>>> -- Norbert Wiener >> >> > Lukasz Kaczmarczyk Lecturer Department of Civil Engineering, University of Glasgow, GLASGOW, G12 8LT Tel: +44 141 3305348 email: likask at civil.gla.ac.uk web: http://www.civil.gla.ac.uk/~kaczmarczyk/ web: http://code.google.com/p/yaffems/
