Author: Robert Hyatt
Date: 05:34:03 09/04/01
Go up one level in this thread
On September 04, 2001 at 04:01:51, Uri Blass wrote: >On September 04, 2001 at 03:29:05, Ed Schröder wrote: > >>On September 04, 2001 at 02:32:07, Ed Schröder wrote: >> >>>On September 03, 2001 at 21:27:30, Robert Hyatt wrote: >>> >>>>No, but you should stop making pronouncements about various processors, based >>>>solely on how your program runs on them. That is _not_ a good benchmark. I'll >>>>bet you any amount of money you want that Cray Blitz, in pure fortran, will >>>>run 10x faster than your program, on a cray. Because that code was designed >>>>to work on a vector architecture, and has specific algorithms designed to take >>>>advantage of that kind of hardware. >>> >>>Just curious, when was the last time you have started Cray Blitz on a Cray? >>> >>>Ed >> >>More to this, see: http://www.top500.org/sublist/index.php3 >> >>Which is a top-500 of the fastest installed hardware in the world. >> >>Rank Manufacturer (GFlops) Processors >> >>1. IBM ASCI White,SP Power3 375 MHz [7226.00] [8192] >>2. IBM SP Power3 375 MHz 16 way [2526.00] [2528] >>3. Intel ASCI Red [2379.00] [9632] >>4. IBM ASCI Blue-Pacific [2144.00] [5808] >> >>11. Cray Inc. T3E1200 [1127.00] [1900] >> >>439. Presto III Athlon 1.333 GHz [77.40] [78] >> >>Interesting is of course the AMD which gets almost 1 GFlop per processor where >>the Cray by far does not get 1 GFlop per processor. Bottom line: isn't your >>beloved Cray out-performed by nowadays micro processors available from your >>local super market? > >I do not see how it is outperformed. >Do you suggest that 1127.00 for cray is outperformed by 77.40 >for the Athlon or maybe you compare only Gflops per processor >and in this case >1127/1900 is smaller than 77.40/78 for the athlon. > >I also do not understand the meaning of these numbers > >What is the meaning of 78 processors? >Does the commercial athlon has 78 processors and if it does >then what is the reason that Deep Fritz is going to use only 8 >processors against kramnik? > >Uri Ed is mixing apples and oranges. The T3 is _not_ a "cray". It is an alpha- based machine made by Cray. The actual Cray CPU is far different from the alpha, and will simply blow the alpha away on a cpu to cpu direct comparison. Of course, hundreds of pocket calculators will look very fast...
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