On Jul 10, 2013, at 1:15 PM, Michael Povolotskyi <[email protected]> wrote:
> On 07/10/2013 02:13 PM, Barry Smith wrote: >> On Jul 10, 2013, at 1:09 PM, Michael Povolotskyi <[email protected]> wrote: >> >>> Hello everybody, >>> does anybody know if it makes sense to build petsc with >>> --with-fortran-kernels? >> No. It is just their so people who think Fortran code compiles to faster >> code than C can try it and see that it doesn't make any meaningful >> difference. >> >> Barry >> >>> Thank you, >>> Michael. >>> >>> > I see. I heard some gossips that fortran compiles faster code to deal with > complex numbers than C. > But you do no agree with that. Am I right? Pick two PETSC_ARCH names, compile one with the fortran kernels, one without. Link you application against each, run with -log_summary and see if it matters. Should take an hour tops on a reasonable machine and then the debate is over for your configuration. Barry > Michael.
