On 08/26/2014 12:06 PM, Matthew Knepley wrote:
On Tue, Aug 26, 2014 at 1:33 AM, Nicola Creati <[email protected]
<mailto:[email protected]>> wrote:
Hello,
I'm writing a large application in Python that uses petsc4py to
solve some equations. Running my code I note that PETSc detects
errors in sections (I believe in Cython extensions and packages)
where petsc4py is not imported or used. I do not need to fix the
problem, I already did it. Is there a way to avoid petsc4py/PETSc
to catch errors in not PETSc sections of the code?
This is an example of the error message I got:
[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/documentation/faq.html#valgrind[0]PETSC
ERROR: or try http://valgrind.org on GNU/linux and Apple Mac OS X
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.
--------------------------------------------------------------------------
mpiexec noticed that process rank 0 with PID 25694 on node daisy
exited on signal 11 (Segmentation fault).
--------------------------------------------------------------------------
I'm using Python 2.7.6, petsc4py 3.4 and PETSc 3.4.3.
http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/PetscPopSignalHandler.html
Thanks,
Matt
Thanks.
Nicola
--
_____________________________________________________________________
Nicola Creati
Istituto Nazionale di Oceanografia e di Geofisica Sperimentale - OGS
IRI (Ricerca Teconologica e Infrastrutture) Department
B.go Grotta Gigante - Brisciki 42/c
34010 Sgonico - Zgonik (TS) - Italy
Tel. +39-0402140213 <tel:%2B39-0402140213>
Fax +39-040327307 <tel:%2B39-040327307>
--
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which
their experiments lead.
-- Norbert Wiener
Thank you, but PetscPopSignalHandler has not been wrapped in petsc4py.
Nicola
--
_____________________________________________________________________
Nicola Creati
Istituto Nazionale di Oceanografia e di Geofisica Sperimentale - OGS
IRI (Ricerca Teconologica e Infrastrutture) Department
B.go Grotta Gigante - Brisciki 42/c
34010 Sgonico - Zgonik (TS) - Italy
Tel. +39-0402140213
Fax +39-040327307
