Using MAT_NO_NEW_NONZERO_LOCATIONS and MAT_SYMMETRIC give error

[Barry Smith]

    The calling sequence for this routine changed recently, make sure  
you are using the
same PETSc version on your different systems.

    Also please send bug reports like this to petsc-maint at mcs.anl.gov  
not petsc-users at mcs.anl.gov

    Barry

On May 27, 2008, at 11:13 AM, Matthew Knepley wrote:

> On Tue, May 27, 2008 at 10:58 AM, Ben Tay <zonexo at gmail.com> wrote:
>> Hi,
>>
>> I read in the manual that I can use either call
>> MatSetOption(A_mat_uv,MAT_NO_NEW_NONZERO_LOCATIONS,PETSC_TRUE,ierr)  
>> or call
>> MatSetOption(A_mat,MAT_SYMMETRIC,PETSC_TRUE,ierr).
>>
>> When I use MAT_NO_NEW_NONZERO_LOCATIONS for the matrix formed by my  
>> momentum
>> eqn, I get the error on my home computer udring compiling:
>>
>> :\Myprojects2\imb_airfoil_x2_parallel\mom_disz.f90(356) : Error:  
>> This name
>> does not have a type, and must have an explicit type.
>> [MAT_NO_NEW_NONZERO_LOCATIONS]
>> call  
>> MatSetOption(A_mat_uv,MAT_NO_NEW_NONZERO_LOCATIONS,PETSC_TRUE,ierr)
>
> 1) It appears this symbol was not defined for Fortran. This is fixed
> in petsc-dev.
>
>> Although this error does not happen when I compile in linux, I can  
>> this
>> error during run:
>>
>> [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: configure using --with-debugging=yes, recompile,  
>> link, and
>> run
>> [0]PETSC ERROR: to get more information on the crash.
>> [0]PETSC ERROR: --------------------- Error Message
>> ------------------------------------
>> [0]PETSC ERROR: Signal received!
>> [0]PETSC ERROR:
>> ------------------------------------------------------------------------
>>
>> I use KSPRICHARDSON and PCILU for my momentum eqn matrix.
>>
>> When I use MatSetOption(A_mat,MAT_SYMMETRIC,PETSC_TRUE,ierr) for my  
>> poisson
>> eqn which is symmetric, I get the same error as above during run.  
>> Btw, I'm
>> using hypre as the preconditioner and default solver.
>
> This option does not actually do anything. The SEGV must come from
> another error.
>
>  Matt
>
>> May I know why using these options give the error?
>>
>> Thank you very much.
>>
>> Regards.
>>
>>
>>
>
>
>
> -- 
> 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
>
>