Author: Micheal Cummings
Date: 06:34:57 04/05/99
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On April 05, 1999 at 02:12:06, Paulo Soares wrote: >On April 05, 1999 at 00:48:11, Terry Ripple wrote: > >> If 16mb is more than enough for 40/2hr, then how much Hash Table Size would be >>enough for playing Sudden Death Games of 60/S.D.,30/S.D.,15/S.D. and 5/S.D. >> >> Would it be better to use smaller Hash Tables for these Sudden Death Games and >>if so, then what would be the best size to use? > >Terry, > >The equation below is used to calculate the minimum hashtables size, >and it is in the manual of Fritz5. I believe that it serves for the >CM6000. > > HT(Kb)=2.0*Pfreq(Mgz)*t(S) > > HT= hashtable size in Kb. > Pfreq= clock speed of the processor in Mgz. > t= average time avaiable per move in seconds. > >Examples: >1. Processor with 200Mgz > Control time=40/2- Average time 3min=180s > > HT=2.0*200*180=72000Kb= 72Mb > >2. Processor with 200Mgz > Control time= Blitz(5min)- Average time=10s(esteemed) > > HT=2.0*200*10=4000Kb= 4Mb > >3. Processor with 400 Mgz > Control time= 40/1- Average time=1.5min=90s > > HT=2.0*400*90=90000Kb= 90Mb > >The program, in some moves, will spend a bigger time than the average >time, then I think that is always good to use a bigger hastable than >the calculated for the equation above. > >Best regards, >Paulo Soares, from Brazil. Well Johann suggest that a hash table of no bigger than 16meg should be used for CM6K. So I think you equation is off in the case of CM6K. I would not even consider using a 90 hash table even on my PII 450.
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