[petsc-dev] TS monitoring at fixed times?

[Barry Smith]

On Oct 23, 2011, at 2:29 PM, Jed Brown wrote:

> On Sun, Oct 23, 2011 at 14:26, Barry Smith <bsmith at mcs.anl.gov> wrote:
>    It would be nice to be able to run the TS monitors so that they are called at fixed "times" instead of just fixed "timesteps". For example, save to a file the solution at each .1 seconds.  This would be useful for doing grid convergence studies, parameter studies, etc.
> 
>     Presumably this could be done by having a TS monitor check if it has passed the next "time-point" and then interpolate the solution back (or something back) to that point and then (somehow) call the regular TS monitor that plots the solution, saves it to a file, etc.
> 
> Yes, this is trivial to implement with a custom monitor (just have it call TSInterpolate). For an automatic monitor, we need an API for specifying which times are desired.

   The simplest could be simply -ts_monitor_dt .1  and then there could be a version that takes an array of times.

    Barry