dolfin team mailing list archive

[Shawn Walker <walker@xxxxxxxxxxxxxxx>]

Hello.  This really isn't a bug, but I think it should not give such a 
ridiculous error.

If I login to my linux machine and run the Stokes DEMO, I get this:

===================================
Solving linear variational problem
  Matrix of size 25140 x 25140 has 730140 nonzero entries.
  Applying boundary conditions to linear system.
  Applying boundary conditions to linear system.
  Applying boundary conditions to linear system.
  Solving linear system of size 25140 x 25140 (PETSc LU solver, umfpack).
Plotting x (unnamed data), press 'q' to continue...
ERROR: In /home/walker/src/VTK/Rendering/vtkXOpenGLRenderWindow.cxx, line 
344
vtkXOpenGLRenderWindow (0xf083900): bad X server connection. 
DISPLAY=ERROR: In 
/home/walker/src/VTK/Rendering/vtkXOpenGLRenderWindow.cxx, line 344
vtkXOpenGLRenderWindow (0xf083900): bad X server connection. 
DISPLAY=ERROR: In 
/home/walker/src/VTK/Rendering/vtkXOpenGLRenderWindow.cxx, line 344
vtkXOpenGLRenderWindow (0xf083900): bad X server connection. 
DISPLAY=[0]PETSC ERROR: 
------------------------------------------------------------------------
[0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, 
probably memory access out of range
[0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger
[0]PETSC ERROR: or see 
http://www.mcs.anl.gov/petsc/petsc-as/documentation/troubleshooting.html#Signal[0]PETSC 
ERROR: or try http://valgrind.org on linux or man libgmalloc on Apple to 
find memory corruption errors
[0]PETSC ERROR: likely location of problem given in stack below
[0]PETSC ERROR: ---------------------  Stack Frames 
------------------------------------
[0]PETSC ERROR: Note: The EXACT line numbers in the stack are not 
available,
[0]PETSC ERROR:       INSTEAD the line number of the start of the function
[0]PETSC ERROR:       is given.
[0]PETSC ERROR: --------------------- Error Message 
------------------------------------
[0]PETSC ERROR: Signal received!
[0]PETSC ERROR: 
------------------------------------------------------------------------
[0]PETSC ERROR: Petsc Release Version 3.0.0, Patch 8, Fri Aug 21 14:02:12 
CDT 2009
[0]PETSC ERROR: See docs/changes/index.html for recent updates.
[0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.
[0]PETSC ERROR: See docs/index.html for manual pages.

========================================

If I run it on the actual linux box, then there is no problem.  The reason 
it doesn't work in the other case is that there is no display (duh).   Is 
there a way to make dolfin just output a message if there is no display, 
instead of that giant error message?

- Shawn