[Beowulf] Q: AMD Opteron (Barcelona) 2356 vs Intel Xeon 5460
bill at cse.ucdavis.edu
Thu Sep 18 00:51:22 EDT 2008
Sangamesh B wrote:
> Hi Tim,
> Recently I benchmarked a Fortran based Scientific application on both
> Intel Xeon Quad core and AMD Opteron Quad core with RHEL 5. Following are
> the results:
> 1. Serial 147.719
> sec 73.952 sec
> 2. Parallel 4 core 39.798
> sec 32.317 sec
> 3. Parallel 8 core 26.880
> sec 30.371 sec
Heh, so despite a slower compiler the better scalability of the opteron leads
to a faster time with 8 cores. For a fairer test I'd suggest using the same
compiler on both.
> For AMD, I used GCC compiler(gfortran), which is released by AMD for
> its barcelona-AMD fam10 based processors.
Gfortran is definitely getting better, I'd still expect intel's compiler to
have a significant advantage in most cases.
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