On Wed, Sep 10, 2003 at 01:20:42PM +0200, Bjorn Tore Sund wrote:
We haven't used the Intel compiler for anything interesting here. I know from discussions on the Beowulf mailing lists that it's the compiler of choice for Intel 32bit architectures both for precision and speed, but no personal experience. We're very close to being an Athlon-only system.
Same for us, we're nearly solely buying AMD CPU's, but we use the Intel Compilers because they are even for the Athlon noticable faster than PGI and they are free of charge for academic use (there occur only problems when you want to do calculations over nfs, don't know why). Even AMD uses for the SPEC benchmarks Intel Compilers and not PGI.
I obviously haven't tested 64bit PGI yet, I need to wait until I have a version of Linux it'll run on. We have been using PGI for the last three years now. People generally seem to prefer the GNU C compilers but the PGI Fortran compilers if looking only at speed, though we see better precision with the GNU compilers than with the Portland compilers. Whether this will stay true with the 64bit compilers remain to be seen.
Bjørn --
Gregor -- -*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*- Gregor Stößer email: gregor.stoesser@chemie.uni-karlsruhe.de Institut für Anorganische Chemie Universität Karlsruhe Tel: 0721/608 2988 Fax: 0721/608 4854 *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-