rather unfortunate article on Mac

Bill Broadley bill at math.ucdavis.edu
Fri Feb 1 04:59:11 EST 2002


Just figured after hearing the 15 Gflop number I'd do a reality check
with stream.  I happen to have a dual g4-800 around, so I ran stream:

       copy scale add triad
cc -O1  313   307 341   342 
cc -O2  319   306 341   342 
cc -03  321   307 341   342 
cc -O4  319   305 341   342

I happen to have a 1.2 Ghz athlon (pretty slow for these days) on
a $65 motherboard:
gcc -O1 677   660 760   680

At this rate the "15 GFlop" g4 can add 2 arrays at 28 Mflops single
prevision, or 14 Mflops double precision.  About 1/2 of a low end
budget athlon.


-- 
Bill Broadley
Mathematics/Institute of Theoretical Dynamics
UC Davis
_______________________________________________
Beowulf mailing list, Beowulf at beowulf.org
To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf



More information about the Beowulf mailing list