[Beowulf] Intel 64bit (emt) Fortran code and AMD Opteron
hahn at physics.mcmaster.ca
Fri Oct 29 17:36:37 PDT 2004
> > does anybody here have positive or negative experiences with using the
> > Intel EMT-64 Fortran compiler on AMD Opteron systems?
> Is it even going to work until the Opteron supports SSE3?
what SSE3 adds over SSE2 is remarkably minor.
> I suspect if you don't vectorize, or only build 32-bit apps
> you will be ok. However, for most applications the vectorization
> is going to give you the big win.
the big win is getting away from the x87 FP stack. vectorization
is a wonderful thing, but practically any FP code will see a nice speedup
with purely scalar SSE usage (such as you'd get with current gcc.)
regards, mark hahn.
More information about the Beowulf