Author: Chessfun
Date: 10:38:39 11/02/05
Go up one level in this thread
On November 02, 2005 at 13:09:51, Gregory Owett wrote: >On November 02, 2005 at 12:37:09, Chessfun wrote: > >>On November 02, 2005 at 12:28:37, Gregory Owett wrote: >> >>>On November 02, 2005 at 11:24:10, Chessfun wrote: >>> >>>>On November 02, 2005 at 10:57:35, Gregory Owett wrote: >>>> >>>>>Recently, I launched two tournaments (ponder off) with the same participants, on >>>>>two different machines. Here results: >>>>> >>>>>On P4 2.2 T=15'+5" : >>>>> >>>>>1. Fruit 2.2.1 KS104 7,5 / 10 >>>>>2. Shredder 9 UCI 5,5 >>>>>3. Shredder 7.04 CLm1 5 25,00 >>>>>4. Fruit 2.2.1 Uri 5 23,00 >>>>>5. Shredder 8 CLD 3,5 17,25 >>>>>6. Fruit 2.2.1 3,5 16,50 >>>>> >>>>> >>>>>On AMD x2 dual core 4800+ T=15'+5" : >>>>> >>>>>1. Shredder 8 CLD 6,5 / 10 >>>>>2. Fruit 2.2.1 Uri 6 >>>>>3. Fruit 2.2.1 KS104 5 25,75 >>>>>4. Fruit 2.2.1 5 24,25 >>>>>5. Shredder 9 UCI 4,5 >>>>>6. Shredder 7.04 CLm1 3 >>>>> >>>>> >>>>>The success of Shredder 8 CLD (UCI) on the dual core machine, confirms what the >>>>>task manager indicated, i.e. which Shredder 8 CLD, in spite of it is >>>>>single-threaded engine, used 99% of the two processors, while all the others >>>>>used 50%, in other words, only one processor. >>>>> >>>> >>>>Well both Shredder 7 and 8 were SMP capable. So you must edit engine parameters >>>>and tell it to use only one thread. >>>> >>>>>(Native engines, as F8, J9, H9, CT15 etc...use 99% too.) >>>>None of those in single versions are SMP capable so I would say on a dual that >>>>is impossible. >>>> >>>>>Peter Kasinski thinks that Windows task manager is confused and carryforwards >>>>>incorrectly. >>>> >>>>I have run every engine and observed task manager and it seems to switch all >>>>correctly I've seen no odd behavior at all. >>>> >>>>Sarah. >>> >>>The goal, it is rather than the engines use two processors instead of one! But >>>by editing the parameters, for example for Shredder, there is no possibility of >>>choosing one or two processors to be used. >> >>Of course there is. Open the engine parameters and change threads from 2 to 1 >>it's there believe me I've done it. >> >>Sarah. > >Indeed, you are right with regard to Shredder, it exists the possibility of >choosing the number of treads, but I do not see for the others engines. It may >be, that the choice is done automatically. > >Gregory It is neither. They are single processor engines not capable of SMP. Sarah.
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