Am Freitag, 24. Juni 2011, 15:00:32 schrieb Dale: > Michael Schreckenbauer wrote: > > Am Freitag, 24. Juni 2011, 08:04:43 schrieb Nikos Chantziaras: > >> On 06/24/2011 01:16 AM, Dale wrote: > >>> If it works with fortran turned on, I'd leave it alone. With > >>> hindsight, > >>> I should have left well enough alone anyway. It wasn't hurting a > >>> thing. > >>> Watch the elog messages. It will tell you at some point to either > >>> enable fortran or emerge some other package that I forget the name > >>> of. That one package pulled several dependencies on my rig. YMMV. > >> > >> Well, as I said in another post, I do have -fortan in my make.conf and > >> there are no problems. I do not have programs installed that need a > >> fortran compiler. And I do not have kde-meta installed; that's a > >> waste > >> of resources. I only install what I actually need. > > > > You have no programs, that *need* fortran, but it could well be, that > > you have programs installed, that perform better when compiled with a > > fortran compiler. I think of sci-libs/fftw here as an example. It's > > used by programs like blender, imagemagick and maybe some others. The > > developers of said library use fortran, because they benchmarked it. If > > you disable fortran, you use the slower C fallback solution. If you > > disable fftw in those packages, you get a slower implementation too > > afaik. > > After all, gentoo is a source based distribution. We all already have a > > couple of languages installed. There's a C compiler a standard user > > will never use. There's a C++ compiler only used by programmers. We all > > have them, only to compile programs, that need them. > > Why not enable fortran, even if it's only optional, to get the best of > > the available implementations? In the end it's only one programming > > language more installed on your system. > > > > Regards, > > Michael > > I just wonder if that is why Cantor was set up to use fortran by > default. Not because it is smaller, requires a few less package but > that it is what it is designed to run off of. It may well work with > something else but not as fast, not as good or something else we don't > know about.
cantor uses R as default backend. R uses fortran. And yes, that's because of its speed, when it comes to mathematics and numerics. > Just makes me think again on this one. > > Dale > > :-) :-) Michael
