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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Elmer who wrote (66513)	7/23/1999 1:12:00 PM
From: Ali Chen	Read Replies (3) \| Respond to of 1574006

Elmer, <Q: "Could you please post your average time per work unit?" A: I am a little disappointed to report that multi processors are of no overall benifit for ...> In short, you are saying that your system does not work. Right? Do you have ANY numbers?

To: Elmer who wrote (66513)	7/23/1999 7:59:00 PM
From: fyo	Read Replies (2) \| Respond to of 1574006

Elmer - Re: I am a little disappointed to report that multi processors are of no overall benifit for memory bound applications such as SETI but perhaps that should have been obvious before I started. I strongly suspect that this is good example of an instance where a dual PIII would thrash a dual Celeron system. Since the data set for an FFT in SETI is 128kB, this would only fit in the Celeron's L2 cache in theory. With the PIII, however, it should be a much more comfortable fit. This would serve to reduce the strain on the main system memory bandwidth. (and, thus, you would likely not see a dual PIII system exhibit the 50% performance penalty when running two instances of SETI). --fyodor