[petsc-users] viewers and nohup (unrelated questions)

[Gianluca Meneghello]

Thanks for the binary viewer, I will wait for it!

Concerning the nohup, t dies from a HUP signal. This is the error I
obtain in nohup.out:

[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: Caught signal number 1 Hang up: Some other process (or
the batch system) has told this process to end
[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/faq.html#valgrind[0]PETSC
ERROR: or try http://valgrind.org on GNU/linux and Apple Mac OS X 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:
------------------------------------------------------------------------
[0]PETSC ERROR: Petsc Release Version 3.2.0, Patch 1, unknown
[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: ./main on a optnompi_ named tarzan.polytechnique.fr by
gianluca Fri Sep 16 16:03:05 2011
[0]PETSC ERROR: Libraries linked from
/moogwai/usr/gianluca/soft/petsc-3.2/optnompi_complex/lib
[0]PETSC ERROR: Configure run at Thu Sep 15 14:21:03 2011
[0]PETSC ERROR: Configure options --download-umfpack
--with-clanguage=cxx --with-debugging=0 --with-fortran-kernels=generic
--with-mpi=0 --with-scalar-type=complex --with-umfpack=1 COPTFLAGS=-O3
CXXOPTFLAGS=-O3 FOPTFLAGS=-O3 PETSC_ARCH=optnompi_complex
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: User provided function() line 0 in unknown directory
unknown file


Any hint is welcome

Thanks

Gianluca

On 16 September 2011 15:09, Matthew Knepley <knepley at gmail.com> wrote:
> On Fri, Sep 16, 2011 at 7:17 AM, Gianluca Meneghello <gianmail at gmail.com>
> wrote:
>>
>> Hi,
>>
>> I would like to ask you 2 unrelated questions.
>>
>> #_1 The first one concerns PETSc viewer. In my code I'm writing
>> outputs with PETSC_VIEWER_ASCII_VTK, more precisely
>>
>>    PetscViewer viewer;
>>    PetscViewerASCIIOpen(PETSC_COMM_SELF,filename.c_str(),&viewer);
>>    PetscViewerSetFormat(viewer,PETSC_VIEWER_ASCII_VTK);
>>    DMView(dau,viewer);
>>    VecView(foou,viewer);
>>    VecView(foop,viewer);
>>    PetscViewerDestroy(&viewer);
>>
>> where foou and foop (velocity and pressure respectively) are vectors
>> extracted from the vector containing the full solution of my problem.
>> The VTK so obtained nicely contains a vector field — from foou — and a
>> scalar field — foop — and can be read by Paraview.
>>
>> Nonetheless, I guess writing (and reading from Paraview) ASCII files
>> is not the best choice. Are there better possibilities in PETSc? Is
>> there a PETSC_VIEWER_BINARY_VTK or equivalent?
>
> We are working on it but it is not yet ready.
>
>>
>> #_2 The second is about the nohup command. If I run my code with
>> "nohup ./main <opts> &" and then exit the console, the program dies as
>> if there was no nohup command in front of it. The same is true for
>> some examples I've tested from the PETSc library. I guess this is
>> related to the machine I'm using more than to the library but... has
>> anyone of you already experienced a similar issue? Any advice is
>> welcome and please let me know if you need any information that can
>> help.
>
> Dos your program die from a HUP signal or another one?
>   Thanks,
>      Matt
>
>>
>> Thanks
>>
>> Gianluca
>>
>> --
>> "[Je pense que] l'homme est un monde qui vaut des fois les mondes et
>> que les plus ardentes ambitions sont celles qui ont eu l'orgueil de
>> l'Anonymat" -- Non omnibus, sed mihi et tibi
>> Amedeo Modigliani
>
>
>
> --
> 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
>



-- 
"[Je pense que] l'homme est un monde qui vaut des fois les mondes et
que les plus ardentes ambitions sont celles qui ont eu l'orgueil de
l'Anonymat" -- Non omnibus, sed mihi et tibi
Amedeo Modigliani