[petsc-users] Tao iterations

[Jason Sarich]

Hi Justin, I'll get this in. I assume that displaying the number of
iterations with tao_converged_reason is what you are asking for in
particular? Or did you have something else in mind?

Jason
On Apr 10, 2015 16:42, "Smith, Barry F." <bsmith at mcs.anl.gov> wrote:

>
>   Justin,
>
>     Sorry TAO simply doesn't even collect this information currently. But
> yes we should definitely make it available!
>
>   Jason,
>
>      Could you please add this; almost all the TaoSolve_xxx() have a local
> variable iter; change that to tao->niter (I'm guess this is suppose to
> capture this information) and add a TaoGetIterationNumber() and the uses
> can access this. Also modify at the end of TaoSolve() -tao_converged_reason
> to also print the iteration count. At the same time since you add this you
> can add a tao->totalits which would accumulate all iterations over all the
> solves for that Tao object and the routine TaoGetTotalIterations() to
> access this.  Note that TaoSolve() would initialize tao->niter = 0 at the
> top.
>
>    Thanks
>
>   Barry
>
>
>
> > On Apr 10, 2015, at 4:16 PM, Justin Chang <jchang27 at uh.edu> wrote:
> >
> > Hi all,
> >
> > Is there a way to generically obtain the number of Tao iterations? I am
> looking through the -help options for Tao and I don't see any metric where
> you can output this quantity in the manner that you could for SNES or KSP
> solves. I am currently using blmvm and tron, and the only way I can see
> getting this metric is by outputting -tao_view and/or -tao_monitor and
> manually finding this number. I find this cumbersome especially for
> transient problems where I would like to simply have this number printed
> for each step instead of ending up with unnecessary info.
> >
> > Thanks,
> >
> >
> > --
> > Justin Chang
> > PhD Candidate, Civil Engineering - Computational Sciences
> > University of Houston, Department of Civil and Environmental Engineering
> > Houston, TX 77004
> > (512) 963-3262
>
>
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