[petsc-users] dmplex with block size error

[Matthew Knepley]

On Thu, Aug 18, 2016 at 5:05 AM, Rongliang Chen <rongliang.chan at gmail.com>
wrote:

> Hi Matt,
>
> The log of the valgrind is attached. When I run with valgrind, the
> following error message comes up.
>

The valgrind log says your code is writing over memory. Fix that first.

   Matt


> -------------------------
> [1]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> [1]PETSC ERROR: Arguments are incompatible
> [1]PETSC ERROR: Cannot change block size 3670016 to 7
> [1]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html
> for trouble shooting.
> [1]PETSC ERROR: Petsc Release Version 3.6.3, Dec, 03, 2015
> [1]PETSC ERROR: ./fsi on a 64bit-debug named rlchen by rlchen Thu Aug 18
> 17:59:43 2016
> [1]PETSC ERROR: Configure options --download-blacs --download-scalapack
> --download-metis --download-parmetis --download-exodusii --download-netcdf
> --download-hdf5 --with-mpi-dir=/home/rlchen/soft/Program/mpich2-shared
> --with-debugging=1 --download-fblaslapack --with-64-bit-indices
> [1]PETSC ERROR: #1 PetscLayoutSetBlockSize() line 424 in
> /home/rlchen/soft/petsc-3.6.3/src/vec/is/utils/pmap.c
> [1]PETSC ERROR: #2 MatSetBlockSize() line 6920 in
> /home/rlchen/soft/petsc-3.6.3/src/mat/interface/matrix.c
> [1]PETSC ERROR: #3 MatXAIJSetPreallocation() line 282 in
> /home/rlchen/soft/3D_fluid/FSI/Spmcs-v1.5/Fluid-petsc-3.
> 6/src/application/Fluid/gcreate.c
> ----------------------
>
> Best regards,
> Rongliang
>
> On 08/18/2016 05:52 PM, Matthew Knepley wrote:
>
> Run with valgrind and send the log.
>
>   Thanks,
>
>      Matt
>
> On Thu, Aug 18, 2016 at 3:59 AM, Rongliang Chen <rongliang.chan at gmail.com>
> wrote:
>
>> Dear All,
>>
>> I try to use the block matrix (BAIJ) for the dmplex data structure with
>> the option "-dm_mat_type baij" (the block size is 7). The code works fine
>> when np = 1 but the following error comes up when np>1. And the code also
>> works fine for np>1 if I set the block size to be 1. Any suggestions are
>> highly appreciated.
>>
>> ----------------------------------------------------
>> [1]PETSC ERROR: PetscMallocValidate: error detected at VecAXPY_Seq() line
>> 89 in /home/rlchen/soft/petsc-3.6.3/src/vec/vec/impls/seq/bvec1.c
>> [1]PETSC ERROR: Memory at address 0x1332571 is corrupted
>> [1]PETSC ERROR: Probably write past beginning or end of array
>> [1]PETSC ERROR: Last intact block allocated in PetscStrallocpy() line 188
>> in /home/rlchen/soft/petsc-3.6.3/src/sys/utils/str.c
>> [1]PETSC ERROR: --------------------- Error Message
>> --------------------------------------------------------------
>> [1]PETSC ERROR: Memory corruption: http://www.mcs.anl.gov/petsc/d
>> ocumentation/installation.html#valgrind
>> [1]PETSC ERROR:
>> [1]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html
>> for trouble shooting.
>> [1]PETSC ERROR: Petsc Release Version 3.6.3, Dec, 03, 2015
>> [1]PETSC ERROR: ./fsi on a 64bit-debug named rlchen by rlchen Thu Aug 18
>> 16:42:34 2016
>> [1]PETSC ERROR: Configure options --download-blacs --download-scalapack
>> --download-metis --download-parmetis --download-exodusii --download-netcdf
>> --download-hdf5 --with-mpi-dir=/home/rlchen/soft/Program/mpich2-shared
>> --with-debugging=1 --download-fblaslapack --with-64-bit-indices
>> [1]PETSC ERROR: #1 PetscMallocValidate() line 136 in
>> /home/rlchen/soft/petsc-3.6.3/src/sys/memory/mtr.c
>> [1]PETSC ERROR: #2 VecAXPY_Seq() line 89 in /home/rlchen/soft/petsc-3.6.3/
>> src/vec/vec/impls/seq/bvec1.c
>> [1]PETSC ERROR: #3 VecAXPY() line 640 in /home/rlchen/soft/petsc-3.6.3/
>> src/vec/vec/interface/rvector.c
>> ---------------------------------------------------
>>
>> Best regards,
>> Rongliang
>>
>
>
>
> --
> 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
>
>
>


-- 
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
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