Author: Robert Hyatt
Date: 08:53:26 12/06/02
Go up one level in this thread
On December 06, 2002 at 10:31:54, Vincent Diepeveen wrote: >On December 06, 2002 at 10:24:22, Robert Hyatt wrote: > >>On December 06, 2002 at 07:14:29, Vincent Diepeveen wrote: >> >>>On December 06, 2002 at 05:40:25, Matt Taylor wrote: >>> >>>>On December 06, 2002 at 05:09:03, Daniel Clausen wrote: >>>> >>>>>http://www.theinquirer.net/?article=6586 >>>>> >>>>>I love marketing. :) >>>>> >>>>>Sargon >>>> >>>>Offhand I would have said the one on the left was a Williamette. ;) >>>>Then again, Intel claimed that both chips had HT. >>>> >>>>The only thing I can figure is that someone made a big typo. >>>> >>>>-Matt >>> >>>Test results provided by Robert Hyatt i see in small font right bottom :) >> >> >>What are you talking about here? I haven't given them any results at all. In >>fact, >>I have had a hyperthreading CPU in my office for two days now and the only >>result I have provided to anyone was what I provided here (SMT on = 1.33X SMT >>off). > >Can you please post verbose outputs with for each ply also the number >of nodes printed? > >That factor 9 times speedup of their own test is a bit much though :) > >Thanks, >Vincent I can post output. I can't print nodes between plies for the same reason I have never been able to do that. All I can do is search to a specific depth and print the node counter when the search completely stops. I ran a dual-thread test with SMT off, and a quad-thread test with SMT on. The single position I tried searched 1.5M nodes per second with SMT off, and 2.1M nodes per second with SMT on. I haven't had time to run exhaustive tests and I haven't tried to find time as I need to fix the spinlock and spinwait stuff anyway, adding the pause instruction... the 9x has to be a typo. The best I have heard was Eugene's 2.0 speedup running two tablebase compression programs at the same time...
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