[petsc-users] [petsc-maint #61421] ksp/examples/tutorials/Ex2.c: good with with-debugging but error without-debugging

Mon Jan 17 15:55:48 CST 2011

Thanks for confirming its a compiler bug.

BTW: The url below doesn't show the actual hotfix download. Is
there a different location for this download?

Satish

On Mon, 17 Jan 2011, Mengda Wu wrote:

> This indeed is caused by a bug in Visual c++ 2005 64bit compiler when using
> optimization.
> The result is correct after installing the hotfix:
> http://support.microsoft.com/kb/976617/
> Thanks a lot!
> 
> Mengda
> 
> On Mon, Jan 17, 2011 at 12:27 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> 
> >
> >  Compiler bug. Immediately before the call to MatMult() in the code add the
> > two lines
> >
> > ierr = VecView(u,0);
> > ierr = MatView(A,0);
> >
> > how large are the two objects? Given the code it is inconceivable that
> > suddenly the vector length becomes 57.
> >
> >   Barry
> >
> >
> > On Jan 17, 2011, at 2:43 AM, Mengda Wu wrote:
> >
> > > Hi all,
> > >
> > >    I just compiled the debugged and optimized versions of petsc-3.1-p7.
> > > Both are successful. I am running on Windows Vista 64bit machine.
> > > The C/C++ compiler is cl.exe from visual studio 2005 (64 bit) and no
> > FORTRAN
> > > compiler is used. BLAS/LAPACK
> > > support comes from Intel MKL-10.1.3.028 (under em64t\lib). No MPI is
> > used.
> > >
> > >   The debugged petsc was configured with:
> > >   $ ./config/configure.py --with-cc='cl' --with-fc=0  --with-cxx='cl'
> > > --with-mpi=
> > > 0
> > >
> > --with-blas-lapack-lib=[mkl_intel_lp64.lib,mkl_intel_thread.lib,mkl_core.lib
> > > ,libiomp5mt.lib] -CFLAGS='-MDd -W3 -Z7' -CXXFLAGS='-MDd -W3 -Z7'
> > >
> > >   The optimized petsc was configured with:
> > >   $ ./config/configure.py --with-cc='cl' --with-fc=0  --with-cxx='cl'
> > > --with-mpi=
> > > 0 --with-debugging=0
> > > --with-blas-lapack-lib=[mkl_intel_lp64.lib,mkl_intel_threa
> > > d.lib,mkl_core.lib,libiomp5mt.lib]  -CFLAGS='-MD -wd4996 -O2'
> > -CXXFLAGS='-MD
> > > -w
> > > d4996 -O2'
> > >
> > >   When I run ksp/examples/tutorials/Ex2.c. The result with debugged petsc
> > > is
> > > =================================================================
> > >   Norm of error 0.000156044 iterations 6
> > > =================================================================
> > >
> > >   However, there are errors with the optimized petsc with the output as
> > > follows:
> > > =================================================================
> > > [0]PETSC ERROR: --------------------- Error Message
> > > ----------------------------
> > > --------
> > > [0]PETSC ERROR: Nonconforming object sizes!
> > > [0]PETSC ERROR: Mat mat,Vec y: global dim 56 57!
> > > [0]PETSC ERROR:
> > > ----------------------------------------------------------------
> > > --------
> > > [0]PETSC ERROR: Petsc Release Version 3.1.0, Patch 7, Mon Dec 20 14:26:37
> > > CST 20
> > > 10
> > > [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:
> > > D:\Develop\Test\PETSc\petsc-3.1-p7\src\ksp\ksp\examples\tutorial
> > > s\ex2.exe on a cygwin-c- named CVBRL-38 by mengda Mon Jan 17 00:35:15
> > 2011
> > > [0]PETSC ERROR: Libraries linked from
> > > /cygdrive/d/Develop/Test/PETSc/petsc-3.1-p
> > > 7/cygwin-c-opt/lib
> > > [0]PETSC ERROR: Configure run at Sun Jan 16 23:34:25 2011
> > > [0]PETSC ERROR: Configure options --with-cc=cl --with-fc=0 --with-cxx=cl
> > > --with-
> > > mpi=0 --with-debugging=0
> > > --with-blas-lapack-lib="[mkl_intel_lp64.lib,mkl_intel_t
> > > hread.lib,mkl_core.lib,libiomp5mt.lib]" -CFLAGS="-MD -wd4996 -O2"
> > > -CXXFLAGS="-MD
> > > -wd4996 -O2" --useThreads=0
> > > [0]PETSC ERROR:
> > > ----------------------------------------------------------------
> > > --------
> > > [0]PETSC ERROR: MatMult() line 1888 in
> > > src/mat/interface/D:\Develop\Test\PETSc\P
> > > ETSC-~1.1-P\src\mat\INTERF~1\matrix.c
> > > [0]PETSC ERROR: main() line 146 in
> > > src/ksp/ksp/examples/tutorials/D:\Develop\Tes
> > > t\PETSc\PETSC-~1.1-P\src\ksp\ksp\examples\TUTORI~1\ex2.c
> > >
> > > This application has requested the Runtime to terminate it in an unusual
> > > way.
> > > Please contact the application's support team for more information.
> > > =================================================================
> > >
> > >   I am wondering what problems may lead to the errors. Please let me know
> > > if you need more
> > > information.
> > >
> > > Thanks,
> > > Mengda
> > >
> > > Hi all,
> > >
> > >     I just compiled the debugged and optimized versions of petsc-3.1-p7.
> > Both are successful. I am running on Windows Vista 64bit machine.
> > > The C/C++ compiler is cl.exe from visual studio 2005 (64 bit) and no
> > FORTRAN compiler is used. BLAS/LAPACK
> > > support comes from Intel MKL-10.1.3.028 (under em64t\lib). No MPI is
> > used.
> > >
> > >    The debugged petsc was configured with:
> > >    $ ./config/configure.py --with-cc='cl' --with-fc=0  --with-cxx='cl'
> > --with-mpi=
> > > 0
> >  --with-blas-lapack-lib=[mkl_intel_lp64.lib,mkl_intel_thread.lib,mkl_core.lib
> > > ,libiomp5mt.lib] -CFLAGS='-MDd -W3 -Z7' -CXXFLAGS='-MDd -W3 -Z7'
> > >
> > >    The optimized petsc was configured with:
> > >    $ ./config/configure.py --with-cc='cl' --with-fc=0  --with-cxx='cl'
> > --with-mpi=
> > > 0 --with-debugging=0
> > --with-blas-lapack-lib=[mkl_intel_lp64.lib,mkl_intel_threa
> > > d.lib,mkl_core.lib,libiomp5mt.lib]  -CFLAGS='-MD -wd4996 -O2'
> > -CXXFLAGS='-MD -w
> > > d4996 -O2'
> > >
> > >    When I run ksp/examples/tutorials/Ex2.c. The result with debugged
> > petsc is
> > > =================================================================
> > >    Norm of error 0.000156044 iterations 6
> > > =================================================================
> > >
> > >    However, there are errors with the optimized petsc with the output as
> > follows:
> > > =================================================================
> > > [0]PETSC ERROR: --------------------- Error Message
> > ----------------------------
> > > --------
> > > [0]PETSC ERROR: Nonconforming object sizes!
> > > [0]PETSC ERROR: Mat mat,Vec y: global dim 56 57!
> > > [0]PETSC ERROR:
> > ----------------------------------------------------------------
> > > --------
> > > [0]PETSC ERROR: Petsc Release Version 3.1.0, Patch 7, Mon Dec 20 14:26:37
> > CST 20
> > > 10
> > > [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:
> > D:\Develop\Test\PETSc\petsc-3.1-p7\src\ksp\ksp\examples\tutorial
> > > s\ex2.exe on a cygwin-c- named CVBRL-38 by mengda Mon Jan 17 00:35:15
> > 2011
> > > [0]PETSC ERROR: Libraries linked from
> > /cygdrive/d/Develop/Test/PETSc/petsc-3.1-p
> > > 7/cygwin-c-opt/lib
> > > [0]PETSC ERROR: Configure run at Sun Jan 16 23:34:25 2011
> > > [0]PETSC ERROR: Configure options --with-cc=cl --with-fc=0 --with-cxx=cl
> > --with-
> > > mpi=0 --with-debugging=0
> > --with-blas-lapack-lib="[mkl_intel_lp64.lib,mkl_intel_t
> > > hread.lib,mkl_core.lib,libiomp5mt.lib]" -CFLAGS="-MD -wd4996 -O2"
> > -CXXFLAGS="-MD
> > >  -wd4996 -O2" --useThreads=0
> > > [0]PETSC ERROR:
> > ----------------------------------------------------------------
> > > --------
> > > [0]PETSC ERROR: MatMult() line 1888 in
> > src/mat/interface/D:\Develop\Test\PETSc\P
> > > ETSC-~1.1-P\src\mat\INTERF~1\matrix.c
> > > [0]PETSC ERROR: main() line 146 in
> > src/ksp/ksp/examples/tutorials/D:\Develop\Tes
> > > t\PETSc\PETSC-~1.1-P\src\ksp\ksp\examples\TUTORI~1\ex2.c
> > >
> > > This application has requested the Runtime to terminate it in an unusual
> > way.
> > > Please contact the application's support team for more information.
> > > =================================================================
> > >
> > >    I am wondering what problems may lead to the errors. Please let me
> > know if you need more
> > > information.
> > >
> > > Thanks,
> > > Mengda
> >
> >
> 
> 