[petsc-dev] CheckPointer

Jed Brown jedbrown at mcs.anl.gov
Wed Sep 11 08:51:46 CDT 2013


What about a run-time option to enable it?

What is the actual overhead for an application that calls MatSetValues with
fine granularity?
On Sep 11, 2013 6:13 AM, "Matthew Knepley" <knepley at gmail.com> wrote:

> The new CheckPointer() is 1000s of times slower than the previous. We may
> want to have a configure option to disable it.
>
> I am not convinced, since the only function that it really matters for is
> MatSetValues(), which is a problematic interface function.
>
>    Matt
>
> --
> 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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