I just set up a dual xeon 2.2 ghz computer and really dont know if it would be better to use hyperthreading or not.
Thanks in advance for advice

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I Hyperthread:
With Hyperthread: 2 Files= Time 3.5HRS

Without Hyperthread: 1 File=Time 3HRS

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> I just set up a dual xeon 2.2 ghz computer and really dont know if it would be
> better to use hyperthreading or not.

As Josh noted, 1 Work Unit per CPU is faster per Work Unit, but 2 Work Units per CPU results in more Work Units in a given poeriod of time, even though it does take longer to cruch each one.

With Dual Xeons & Hyperthreading enabled you'll end up with effectively 4 CPUs. So make sure you've got use 4 (or more) CPUs set in your preferences.

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Grant
Darwin NT

>I just set up a dual xeon 2.2 ghz coputer and really dont know if it would be better to use hyperthreading or not.

Depends on the project(s) you join.

With a Dual Xeon system - It either claims to have 2 CPUs (HT=off) or 4 CPUS (HT=on).

With Seti, HT means you can produce about 160% more work than with HT turned off.
With CPDN, about the same.
With Predictor, As I recall it is about the same as Seti
With LHC, who knows...they never have work ;)
With Einstein, No advantage, HT on = aproximately same # WUs per day as non-HT.