[petsc-users] 64 bit integers

[Matthew Knepley]

On Fri, Aug 17, 2012 at 10:16 AM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> On Fri, Aug 17, 2012 at 10:12 AM, Michele Rosso <mrosso at uci.edu> wrote:
>
>> Does this mean that Fortran compiler invoked by the PETSc Makefile will
>> compile to code with the 64 bit integer option so that also Fortran
>> Integer will be 64 bit?
>
>
> NO, that would be bad because it breaks library interfaces.
>
> You have to use the right types internally. If you use PetscInt
> everywhere, then you'll be fine. If you mix types, you have to find out
> where to convert.
>

I meant that if you use PetscInt in Fortran it was also be a 64-bit integer.

   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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