[petsc-users] How expensive are these functions?

[Pedro Torres]

Thanks you Matt.

Regards

Pedro

2010/3/26 Matthew Knepley <knepley at gmail.com>

> 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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