On Mon, Feb 20, 2012 at 5:58 PM, Mohammad Mirzadeh <[email protected]>wrote:
Just if wondering what the actual code is, here's the bit causing the trouble:
AOApplicationToPetsc(ao, ghostNodes.size(), (int*)ghostNodes); VecCreateGhost(comm, localNodes.size(), PETSC_DECIDE, ghostNodes.size(), (int*)ghostNodes, &v); AOPetscToApplication(ao, ghostNodes.size(), (int*)ghostNodes);
when the code is in serial, ghostNodes.size() = 0 and (int*)ghostNodes = NULL.
So you are asking us to give up checking for NULL if the size is 0? Matt
On Mon, Feb 20, 2012 at 3:54 PM, Mohammad Mirzadeh <[email protected]>wrote:
Sure, Jed. My bad. Here's the whole message when the code is run in _serial_:
[0]PETSC ERROR: --------------------- Error Message ------------------------------------ [0]PETSC ERROR: Invalid pointer! [0]PETSC ERROR: Null Pointer: Parameter # 3! [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: Petsc Release Version 3.2.0, Patch 6, Wed Jan 11 09:28:45 CST 2012 [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: ./petsc on a arch-linu named mohammad-laptop by mohammad Mon Feb 20 15:52:25 2012 [0]PETSC ERROR: Libraries linked from /home/mohammad/soft/petsc-3.2-p6/arch-linux2-cxx-debug/lib [0]PETSC ERROR: Configure run at Thu Feb 16 02:16:40 2012 [0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ --with-fc=gfortran --with-clanguage=cxx --download-f-blas-lapack=1 --download-mpich=1 --download-hypre=1 --download-ml=1 --with-parmetis-include=/home/mohammad/soft/parmetis/include --with-parmetis-lib="-L/home/mohammad/soft/parmetis/lib -lparmetis -lmetis" --download-superlu_dist=1 [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: AOApplicationToPetsc() line 249 in /home/mohammad/soft/petsc-3.2-p6/src/dm/ao/interface/ao.c [0]PETSC ERROR: --------------------- Error Message ------------------------------------ [0]PETSC ERROR: Invalid pointer! [0]PETSC ERROR: Null Pointer: Parameter # 3! [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: Petsc Release Version 3.2.0, Patch 6, Wed Jan 11 09:28:45 CST 2012 [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: ./petsc on a arch-linu named mohammad-laptop by mohammad Mon Feb 20 15:52:25 2012 [0]PETSC ERROR: Libraries linked from /home/mohammad/soft/petsc-3.2-p6/arch-linux2-cxx-debug/lib [0]PETSC ERROR: Configure run at Thu Feb 16 02:16:40 2012 [0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ --with-fc=gfortran --with-clanguage=cxx --download-f-blas-lapack=1 --download-mpich=1 --download-hypre=1 --download-ml=1 --with-parmetis-include=/home/mohammad/soft/parmetis/include --with-parmetis-lib="-L/home/mohammad/soft/parmetis/lib -lparmetis -lmetis" --download-superlu_dist=1 [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: AOPetscToApplication() line 210 in /home/mohammad/soft/petsc-3.2-p6/src/dm/ao/interface/ao.c
It seems to complain about the 3rd parameter of AOApplicationToPetsc() and AOPetscToApplication(). VecCreateGhost, on the other hand, is fine.
On Mon, Feb 20, 2012 at 3:47 PM, Jed Brown <[email protected]> wrote:
On Mon, Feb 20, 2012 at 17:25, Mohammad Mirzadeh <[email protected]>wrote:
Hi,
Is there an internal check to see if the 'ghost' pointer in VecCreateGhost() is NULL ? This can happen, for example, if the code is run in serial and the there are no ghost points (hence n_ghost = 0 and ghost = NULL(implementation dependent of course) ). AOXXXXToYYYY functions seem to crash if the corresponding pointer is NULL.
Always send the whole error message.
-- 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