Author: Matt Taylor
Date: 10:44:57 12/05/02
Go up one level in this thread
On December 05, 2002 at 11:50:22, Gian-Carlo Pascutto wrote:
>On December 05, 2002 at 11:06:39, Christopher A. Morgan wrote:
>
>>Would there be any
>>benefit when running single chess application on P4 3.03 with HT versus P4 3.0
>>GHz without HT?
>
>Not unless the program supports multiple CPU's. ('Deep' version)
>
>--
>GCP
Hyperthreading is vary analogous to a normal SMP system, but you won't see quite
the same gains (and there are other drawbacks, too). Basically hyperthreading
assumes that both programs do more than one thing and it can therefore extract
more parallelism from that. If one program is working with the FPU, the other
program can use the ALU in parallel. If both programs want to use the FPU,
they'll compete for the same (limited) resource, and it will slow them both
down. However, total throughput should still be equal or more.
-Matt
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