dummy in MyKSPConverged

Klaij, Christiaan C.Klaij at marin.nl
Fri Sep 4 10:35:40 CDT 2009


With the new version 3.0.0-p8, if I assign a value to the dummy in MyKSPConverged at the end of src/ksp/ksp/examples/tutorials/ex2f.F, I get a segmentation fault (this didn't happen with version 2.3.3-p13). Any idea why?

$ tail ex2f.F
        flag = 0
      ierr = 0
      dummy = 0

$ ./ex2f -my_ksp_convergence
[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: [0] GMREScycle line 133 src/ksp/ksp/impls/gmres/gmres.c
[0]PETSC ERROR: [0] KSPSolve_GMRES line 228 src/ksp/ksp/impls/gmres/gmres.c
[0]PETSC ERROR: [0] KSPSolve line 308 src/ksp/ksp/interface/itfunc.c
[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.
[0]PETSC ERROR: ------------------------------------------------------------------------

dr. ir. Christiaan Klaij
CFD Researcher
Research & Development
mailto:C.Klaij at marin.nl
T +31 317 49 33 44

2, Haagsteeg, P.O. Box 28, 6700 AA Wageningen, The Netherlands
T +31 317 49 39 11, F +31 317 49 32 45, I http://www.marin.nl/
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