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Subject: Re: Hyper-Threading Technology from Intel-to Hype or Not to Hype?

Author: Aaron Gordon

Date: 23:05:30 03/04/03

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On March 04, 2003 at 21:57:58, Nolan Denson wrote:

>There are no draw backs when looking to get a computer that using
>Hyper-Threading. If you do not like the feature you can just simply turn it off.
>There are many system on the market that claims to be Hyper Threading enabled.
>Intel has a utility program that checks for Hyper Threading ...
>
>1. You must have the proper CPU's.
>2. You must have the proper motherboard.
>3. You bios must support it.
>4. Your Operating system must support it.
>
>Once these things are met your system will indicate that Hyper Threading is
>enable before booting into the Operating System.
>
>It is not an indication that you will see when the computer is turned on and the
>Bios is posting.
>
>Soon all of Intel processcor's will have Hyper Threading. So if what you are
>using your processor slows down with Hyper Threading, just simply turn it off
>via the Bios.

How convenient. Have to reboot 20 times per day to turn it on/off just so your
applications run optimally. I'll be sticking with the cooler running, faster,
and cheaper AMD chips. :)

>On March 04, 2003 at 17:39:42, Vincent Diepeveen wrote:
>
>>On March 04, 2003 at 16:32:33, Jay-R Delacruz wrote:
>>
>>>Do the deep versions of Fritz, Junior and Shredder support hyper-thread? Can
>>>someone please tell me before upgrading my PC to try the deep versions?
>>
>>I just read email from Frans Morsch. DeepFritz7 gets 5-10% speedup by
>>hyperthreading.
>>
>>Shredder gets more speedup in nodes a second than that, but it gets no speedup
>>from it as it gets SMP already a far smaller speedup (1.5 or so), so it is
>>smarter to turn SMT/HT off for it. perhaps shredder8 will fix this.
>>
>>For diep it speeds me up about 11% in NPS but i cannot garantuee that at a 4
>>processor it will give a positive speedup.
>>
>>When running 2 processes at a P4 at 3.06ghz it will give for sure some speedup
>>because it goes from 100k nps to 120k nps. Nearly 20% speedup it gets with it
>>(18.6 or something) which gives a positive speedup also in depth.
>>
>>For deepjunior we know that it already works bad at 8 processor Xeon 1.6Ghz
>>versus 4 processor Xeon 1.9Ghz, so i *assume* for now that SMT/HT will not give
>>it much benefit for it at all, but perhaps Amir or Shay wants to give a
>>statement regarding this themselves.
>>
>>We talk of course about the SMT/HT from Xeon processors up to 2.8Ghz now for
>>those which have it enabled. For the P4 3.06Ghz and also Xeons of that and above
>>things are a different matter.
>>
>>Best regards,
>>Vincent



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