[petsc-dev] Counting Fortran function pointers

Jed Brown jedbrown at mcs.anl.gov
Tue Dec 4 22:07:30 CST 2012


Not for low-dimensional ODE systems, for example.

String lookups elsewhere in that path also need to be removed. Barry mailed
about this the other day.
On Dec 4, 2012 8:03 PM, "Matthew Knepley" <knepley at gmail.com> wrote:

>
> On Dec 4, 2012 7:42 PM, "Jed Brown" <jedbrown at mcs.anl.gov> wrote:
> >
> > On Tue, Dec 4, 2012 at 3:12 PM, Matthew Knepley <knepley at gmail.com>
> wrote:
> >>
> >> I think all of these Fortran pointers should be string attached. We do
> >> not need speed here, and it
> >> is consistent, extensible, and no less safe than the crap in there now.
> >
> >
> > It _is_ in the critical path. These function calls are made every
> function evaluation or every matrix multiply, etc.
>
> 1 eval every mstmult or residual? That is tiny
>
>    Matt
>
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