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[pcorreia@xxxxxxxxx]

When running demo in src/demo/fem it returns:

Initializing PETSc (ignoring command-line arguments).
Assembling rank 2 form.
Ordering mesh entities...
Assembling over 1 cells.
| Assembling over cells                                           |
|-----------------------------------------------------------------| 0.0%
| Assembling over cells                                           |
|=================================================================| 100.0%
Assembling rank 2 form.
Ordering mesh entities...
Assembling over 1 cells.
| Assembling over cells                                           |
|-----------------------------------------------------------------| 0.0%
| Assembling over cells                                           |
|=================================================================| 100.0%

Assembled stiffness matrix:
row 0: (0, 0.5)  (1, -0.166667)  (2, -0.166667)  (3, -0.166667)
row 1: (0, -0.166667)  (1, 0.166667)  (2, 0)  (3, 0)
row 2: (0, -0.166667)  (1, 0)  (2, 0.166667)  (3, 0)
row 3: (0, -0.166667)  (1, 0)  (2, 0)  (3, 0.166667)

Reference stiffness matrix:
[0]PETSC ERROR: --------------------- Error Message
------------------------------------
[0]PETSC ERROR: Operation done in wrong order!
[0]PETSC ERROR: Must call MatAssemblyBegin/End() before viewing matrix!
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: Petsc Release Version 2.3.2, Patch 10, Wed Mar 28 19:13:22
CDT 2007 HG revision: d7298c71db7f5e767f359ae35d33cab3bed44428
[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.
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: unknown on a linux named alinex-2PUb8L by paulo Thu Jun  7
12:53:06 2007
[0]PETSC ERROR: Libraries linked from
/home/paulo/libmesh/contrib/petsc-2.3.2-p10/lib/linux
[0]PETSC ERROR: Configure run at Fri Apr 13 17:42:25 2007
[0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++
--with-fc=g77 --with-mpi-dir=/usr/lib/mpich/ --with-debugging=1
--with-shared --with-blas-lapack-dir=/usr/lib/
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: MatView() line 523 in src/mat/interface/matrix.c

Assembled mass matrix:
row 0: (0, 0.0166667)  (1, 0.00833333)  (2, 0.00833333)  (3, 0.00833333)
row 1: (0, 0.00833333)  (1, 0.0166667)  (2, 0.00833333)  (3, 0.00833333)
row 2: (0, 0.00833333)  (1, 0.00833333)  (2, 0.0166667)  (3, 0.00833333)
row 3: (0, 0.00833333)  (1, 0.00833333)  (2, 0.00833333)  (3, 0.0166667)

Reference mass matrix:
[0]PETSC ERROR: --------------------- Error Message
------------------------------------
[0]PETSC ERROR: Operation done in wrong order!
[0]PETSC ERROR: Must call MatAssemblyBegin/End() before viewing matrix!
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: Petsc Release Version 2.3.2, Patch 10, Wed Mar 28 19:13:22
CDT 2007 HG revision: d7298c71db7f5e767f359ae35d33cab3bed44428
[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.
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: unknown on a linux named alinex-2PUb8L by paulo Thu Jun  7
12:53:06 2007
[0]PETSC ERROR: Libraries linked from
/home/paulo/libmesh/contrib/petsc-2.3.2-p10/lib/linux
[0]PETSC ERROR: Configure run at Fri Apr 13 17:42:25 2007
[0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++
--with-fc=g77 --with-mpi-dir=/usr/lib/mpich/ --with-debugging=1
--with-shared --with-blas-lapack-dir=/usr/lib/
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: MatView() line 523 in src/mat/interface/matrix.c


I don't find PETSC errors in other demos and everything is updated.

/Paulo