[petsc-dev] About PreLoad

[Ryan Yan]

Dear Barry,
In my previous email, that is a typo.

In the actual code, I did use:
PreLoadStage("A");
PreLoadStage("B"),

Ok, I see the difference:
I use the PetscOptionsSetValue("-log_summary",""); after the preloading
section. And so when I submit the job, I did not include the command line
option -log_summary again. This seems having confused the code.
And this behavior causes some of the statistics missing as I reported above.

After remove the function call PetscOptionsSetValue("-log_summary","") in
the
code and use command line option -log_summary. It worked. And all the
information is complete now.

Thanks a lot for the help,

Yan


On Thu, Jun 30, 2011 at 9:49 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
> PreLoadStage((PETSC_TRUE, "B"), doesn't take a PetscBool argument.
>
>
> src/snes/examples/tutorials/ex19.c uses these preload macros and does
> produce a table of the operations done. What is different in your code?
>
>   Barry
>
>
> On Jun 30, 2011, at 5:47 PM, Ryan Yan wrote:
>
> > Dear All,
> > I am using a developer version of  PETSc code to test a solver code.
> >
> > The code loads a matrix, and solves the matrix by method
> > A first and then method B. In each method of A and B, I setup KSP, solve,
> > and then destroy KSP. So in this process, I set up KSP twice and destroy
> > the KSP object twice.
> >
> > I am using the PreLoadxxx to do the profiling but seems like part of the
> > profiling information is missing.
> >
> > PreLoadBegin(PETSC_TRUE, "A"),
> > PreLoadStage((PETSC_TRUE, "B"),
> > PreLoadEnd()
> >
> > The missing part is:
> >
> >
> > Event                Count      Time (sec)     Flops
>         --- Global ---  --- Stage ---   Total
> >                    Max Ratio  Max     Ratio   Max  Ratio  Mess   Avg len
> Reduct  %T %F %M %L %R  %T %F %M %L %R Mflop/s
> >
> ------------------------------------------------------------------------------------------------------------------------
> >
> > --- Event Stage 0: Main Stage
> >
> >
> > --- Event Stage 1: A
> >
> >
> > --- Event Stage 2: B
> >
> >
> ------------------------------------------------------------------------------------------------------------------------
> >
> >
> > Is there any way to workaround this?
> >
> > Many thanks,
> >
> > Yan
> >
>
>
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