[petsc-users] How expensive are these functions?

[Matthew Knepley]

On Fri, Mar 26, 2010 at 6:44 PM, Pedro Torres <torres.pedrozpk at gmail.com>wrote:

> Hi,
>
> I'm evaluating how to handle differents mapping and ordering, and I would
> like to have some concept of how expensive will be to put it in a loop.  Is
> it possible to order these functions according the computational cost??.
>
> AOApplicationToPetsc()
> AOPetscToApplication()
>
> ISGlobalToLocalMappingApply()
> ISLocalToGlobalMappingApply()
>
>
These are all just direct array lookups to an index translation table. The
AO have a somewhat high memory
cost in parallel, but the performance should be near identical for all of
these.

  Matt


>
> Thanks you very
>
>
> Pedro
>
>
>


-- 
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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