Author: Vincent Diepeveen
Date: 07:21:32 03/05/03
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On March 04, 2003 at 22:47:04, Robert Hyatt wrote: >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. > >You keep saying that. It continues to be _wrong_. The 2.8 xeon has the >_exact_ same cpu core (and SMT) that the 3.06 xeon and PIV has. And when I >say _exactly_ I mean _exactly_. This is _directly_ from Intel... for the >record. try some better source instead of the marketing department try some hardware experts. for example at: http://www.realworldtech.com/index.cfm > >> >>Best regards, >>Vincent
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