[petsc-dev] Counting Fortran function pointers

[Barry Smith]

On Dec 5, 2012, at 7:40 AM, Lisandro Dalcin <dalcinl at gmail.com> wrote:

> On 5 December 2012 01:07, Jed Brown <jedbrown at mcs.anl.gov> wrote:
>> 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.
>> 
> 
> Does your concerns also include accessing the options database? If you
> are solving a small ODEs with a linear implicit method, then
> KSPSolve() have about 20 string lookups in the options database (and
> these lookups are linear searches!).

   Those lookups don't belong there. They are suppose to be in KSPSetFromOptions() (virtually all look ups are "suppose" to be in SetFromOptions()) but a combination of 

1) our laziness and
2) sometimes something is not in the right state at the time of SetFromOptions() to handle a look up (these are hard to deal with).

   Barry



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> Lisandro Dalcin
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