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

[Ed Bueler]

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)
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