great, thanks Blaise
On Mar 14, 2012, at 4:39 PM, Satish Balay wrote: > Blaise, > > thanks for the test code. pushed a fix now. > > Satish > > On Wed, 14 Mar 2012, Blaise Bourdin wrote: > >> Hi, >> >> There seems to be a bug in ISRestoreIndicesF90 when the locally owned >> portion of the index set is empty. I am attaching a small example >> illustrating the issue. >> >> mpiexec -n 2 ./ISBugf90 -start_in_debugger >> [0]PETSC ERROR: PETSC: Attaching gdb to ./ISBugf90 of pid 34744 on display >> /tmp/launch-kaUROB/org.x:0 on machine galerkin.math.lsu.edu >> [1]PETSC ERROR: PETSC: Attaching gdb to ./ISBugf90 of pid 34745 on display >> /tmp/launch-kaUROB/org.x:0 on machine galerkin.math.lsu.edu >> [0] Index set is permutation >> [0] Number of indices in (stride) set 0 >> [1] Index set is permutation >> [1] Number of indices in (stride) set 2 >> [1] 0 0 >> [1] 1 1 >> 1 0 1 >> 0 >> [0]PETSC ERROR: PetscTrFreeDefault() called from ISRestoreIndices_Stride() >> line 174 in /opt/HPC/petsc-dev/src/vec/is/impls/stride/stride.c >> [0]PETSC ERROR: Block at address 0x105647200 is corrupted; cannot free; >> may be block not allocated with PetscMalloc() >> [0]PETSC ERROR: PetscTrFreeDefault() line 287 in >> /opt/HPC/petsc-dev/src/sys/memory/mtr.c Bad location or corrupted memory >> >> The stack trace is >> (gdb) where >> #0 0x00007fff8e8c282a in __kill () >> #1 0x00007fff8ecf0a9c in abort () >> #2 0x00000001039bd19c in PetscAbortErrorHandler (comm=1140850689, line=287, >> fun=0x105491428 "PetscTrFreeDefault", file=0x105490a20 >> "/opt/HPC/petsc-dev/src/sys/memory/mtr.c", dir=0x104ff6808 "", n=78, >> p=PETSC_ERROR_INITIAL, mess=0x7fff6345e500 "Bad location or corrupted >> memory", ctx=0x0) at /opt/HPC/petsc-dev/src/sys/error/errabort.c:62 >> #3 0x00000001039b4c72 in PetscError (comm=1140850689, line=287, >> func=0x105491428 "PetscTrFreeDefault", file=0x105490a20 >> "/opt/HPC/petsc-dev/src/sys/memory/mtr.c", dir=0x104ff6808 "", n=78, >> p=PETSC_ERROR_INITIAL, mess=0x105490d2c "Bad location or corrupted memory") >> at /opt/HPC/petsc-dev/src/sys/error/err.c:356 >> #4 0x000000010394c29b in PetscTrFreeDefault (aa=0x105647950, line=174, >> function=0x1054ad654 "ISRestoreIndices_Stride", file=0x1054ad0a0 >> "/opt/HPC/petsc-dev/src/vec/is/impls/stride/stride.c", dir=0x104ff6808 "") >> at /opt/HPC/petsc-dev/src/sys/memory/mtr.c:287 >> #5 0x0000000103ab8c24 in ISRestoreIndices_Stride (in=0x7ff65901df70, >> idx=0x7fff6345f2a0) at >> /opt/HPC/petsc-dev/src/vec/is/impls/stride/stride.c:174 >> #6 0x0000000103ad3d89 in ISRestoreIndices (is=0x7ff65901df70, >> ptr=0x7fff6345f2a0) at /opt/HPC/petsc-dev/src/vec/is/interface/index.c:417 >> #7 0x0000000103c425c6 in isrestoreindicesf90_ (x=0x103863110, >> ptr=0x103863118, __ierr=0x7fff6345f360) at >> /opt/HPC/petsc-dev/src/vec/is/interface/f90-custom/zindexf90.c:29 >> #8 0x0000000103862d83 in isbug () at ISBugf90.F90:18 >> #9 0x0000000103862a3c in main () >> >> >> >> This can be avoided by always checking the size of the array to be restored >> before restoring it (uncomment l 18 and 20), but this is a bit annoying. Is >> this easily fixable in petsc? The C version does not have this issue. >> > -- Department of Mathematics and Center for Computation & Technology Louisiana State University, Baton Rouge, LA 70803, USA Tel. +1 (225) 578 1612, Fax +1 (225) 578 4276 http://www.math.lsu.edu/~bourdin
