[petsc-users] master branch option "-snes_monitor_solution"

[Barry Smith]

  Ed,

   I have fixed the error in the branch barry/update-monitors now in next for testing. 

   There is one API change associated with the fix. To graphically visualize the solution one now needs 

-ksp/snes/ts_monitor_solution draw 

the default behavior is now to ASCII print the solution to the screen.

   Barry

Further work is needed to unify and simplified the various monitor options.

> On Nov 22, 2015, at 8:55 PM, Ed Bueler <elbueler at alaska.edu> wrote:
> 
> Barry --
> 
> That is reassuring, actually.  That is, knowing that occasionally ya'll botch something, and that the problem is not entirely on this leaf of the internets.
> 
> Ed
> 
> 
> On Sun, Nov 22, 2015 at 5:51 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> 
>    I totally botched that update; looks like I broke a lot of the command line monitor options in master.
> 
>    Fixing it properly will take some work but also enhance the command line monitor and reduce the code a bit.
> 
>    Thanks for letting us know.
> 
> 
>    Barry
> 
> > On Nov 22, 2015, at 1:40 PM, Ed Bueler <elbueler at alaska.edu> wrote:
> >
> > Dear PETSc --
> >
> > When I use option -snes_monitor_solution in master branch I get the error below.  I have a sense that this is related to the change listed at http://www.mcs.anl.gov/petsc/documentation/changes/dev.html, namely
> >
> > "SNESSetMonitor(SNESMonitorXXX, calls now require passing a viewer as the final argument, you can no longer pass a NULL)"
> >
> > but the error message below is not informative enough to tell me what to do at the command line.
> >
> > Note that my X11 windows do work, as other options successfully give line graphs etc.
> >
> > Do I need
> >
> >    -snes_monitor_solution Z
> >
> > with some value for Z?  If so, where are the possibilities documented?
> >
> > Thanks!
> >
> > Ed
> >
> >
> >
> > $ ./ex5 -snes_monitor_solution
> > [0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
> > [0]PETSC ERROR: Null argument, when expecting valid pointer
> > [0]PETSC ERROR: Null Object: Parameter # 4
> > [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble shooting.
> > [0]PETSC ERROR: Petsc Development GIT revision: v3.6.2-1635-g5e95a8a  GIT Date: 2015-11-21 16:14:08 -0600
> > [0]PETSC ERROR: ./ex5 on a linux-c-dbg named bueler-leopard by ed Sun Nov 22 10:31:33 2015
> > [0]PETSC ERROR: Configure options --download-mpich --download-triangle --with-debugging=1
> > [0]PETSC ERROR: #1 SNESMonitorSolution() line 33 in /home/ed/petsc/src/snes/interface/snesut.c
> > [0]PETSC ERROR: #2 SNESMonitor() line 3383 in /home/ed/petsc/src/snes/interface/snes.c
> > [0]PETSC ERROR: #3 SNESSolve_NEWTONLS() line 191 in /home/ed/petsc/src/snes/impls/ls/ls.c
> > [0]PETSC ERROR: #4 SNESSolve() line 3984 in /home/ed/petsc/src/snes/interface/snes.c
> > [0]PETSC ERROR: #5 main() line 171 in /home/ed/petsc/src/snes/examples/tutorials/ex5.c
> > [0]PETSC ERROR: PETSc Option Table entries:
> > [0]PETSC ERROR: -snes_monitor_solution
> > [0]PETSC ERROR: ----------------End of Error Message -------send entire error message to petsc-maint at mcs.anl.gov----------
> > application called MPI_Abort(MPI_COMM_WORLD, 85) - process 0
> > [unset]: aborting job:
> > application called MPI_Abort(MPI_COMM_WORLD, 85) - process 0
> >
> >
> >
> > --
> > Ed Bueler
> > Dept of Math and Stat and Geophysical Institute
> > University of Alaska Fairbanks
> > Fairbanks, AK 99775-6660
> > 301C Chapman and 410D Elvey
> > 907 474-7693 and 907 474-7199  (fax 907 474-5394)
> 
> 
> 
> 
> -- 
> Ed Bueler
> Dept of Math and Stat and Geophysical Institute
> University of Alaska Fairbanks
> Fairbanks, AK 99775-6660
> 301C Chapman and 410D Elvey
> 907 474-7693 and 907 474-7199  (fax 907 474-5394)