On Mon, Oct 12, 2009 at 11:50:10AM -0700, Greg Kurtzer wrote: > The underlying components that make up a distribution are in-fact an > important component to an HPC system in its entirety. There are many > reasons for this, but I will focus on just a few that I hope don't > strike too much of a religious chord with people while at the same > time letting me rant a bit. ;-)
Well, allow me to point out the cow turd you may have stepped in ;-) > 1) HPC people are quite familiar with building their scientific apps > with optimized compilers and libraries. If an application is linking > against any OS libraries (yes, including the C library) it would > probably make sense to make sure those have been compiled with an > optimal build environment. Most distributions do not do this, If the library isn't significantly cpu intensive, then you're better off sticking to the best-tested option for your compiler. For gcc, that's -O2. Does gcc even bootstrap at -O3 on your favorite platform? And pass all the test suites? It's not worth risk unless there's a significant performance gain. Bah, humbug, Gentoo, pthui. -- greg _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
