Author: Matt Taylor
Date: 22:36:02 04/23/03
Go up one level in this thread
On April 21, 2003 at 17:41:17, Tom Kerrigan wrote: >On April 21, 2003 at 14:46:27, Aaron Gordon wrote: > >>>Not really. Processors have their strengths and weaknesses. I'm sure you could >>>find some pathological code that runs much slower on the Athlon than the P4. >> >>If you find anything, let me know. So far I know of nothing. I however know >>of *MANY* things that run pitiful on a p4. > >IIRC, a game of life thing I wrote a few months ago ran 2-3x slower on my AXP >2000+ than on my 2.2GHz P4. Also I think the P4 has won pretty much every media >encoding benchmark I've seen, often by large margins. > >>Intel C is much faster than gcc and slightly faster than VC in my tests. I find >>Intel C 5.0.1 faster for Athlons but what AMD used for the testing was the >>latest, 7.0. > >Yeah, so the question is, does 64-bit gcc Crafty run faster than 32-bit VC or >Intel C Crafty? If the answer is no, then we're going to be waiting for a while >for x86-64 to improve anything. Considering x86-64 Windows will be out sometime >this year, I imagine x86-64 VC will be, too. I doubt MS would produce an OS and >not give users a way to write native programs for it. > >-Tom Actually MS had an internal 64-bit compiler (VC?) available last summer. The 64-bit version of Windows should beta this summer. Visual Studio .NET 2003 releases this summer, though I don't know if it's at all related to x86-64. Hopefully people have had enough time to port their code. As I have already posted, here are 32-bit benchmarks for Opteron: http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_8796_8800,00.html Opteron manages to beat Itanium once or twice (SPECint), and it is certainly competitive with the chip. As for Xeon, I don't see a benchmark on that page where Xeon beats Opteron. -Matt
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