Matthew Knepley knepley at gmail.com
Thu Mar 16 12:42:45 CST 2006

You can use -ksp_truemonitor for the true residual. I
don't think we have something to output every N iterations,
but adding a custom monitor is not that hard. You use



On 3/16/06, abdul-rahman at tu-harburg.de <abdul-rahman at tu-harburg.de> wrote:
> Hi all,
> Is there a simple way to control the output of residual monitor ? i.e.,
> instead of every iteration, can I output every N iterations to screen ?
> As for the true residuals, can I store them? I know how to get the
> preconditioned residuals. Seems to me the true residuals are in the vt2
> temp variable I saw in KSPInitialResidual.
> Many thanks,
> Razi

"Failure has a thousand explanations. Success doesn't need one" -- Sir Alec
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