Author: Ulrich Tuerke
Date: 04:33:58 01/09/01
Go up one level in this thread
On January 09, 2001 at 07:06:04, Jouni Uski wrote: >On January 09, 2001 at 06:47:16, Ulrich Tuerke wrote: > >>On January 09, 2001 at 06:18:29, Steffen Jakob wrote: >> >>>On January 09, 2001 at 05:36:26, Ulrich Tuerke wrote: >>> >>>>On January 09, 2001 at 04:55:19, Jouni Uski wrote: >>>> >>>>>On January 09, 2001 at 04:08:38, Ulrich Tuerke wrote: >>>>> >>>>>>On January 09, 2001 at 03:09:39, Jouni Uski wrote: >>>>>> >>>>>>>If I am not complete wrong please note: >>>>>>> >>>>>>>Because Gandalf is so slow in NPS sense (about 1/4 of many top engines) it needs >>>>>>>much less HASH table RAM than other programs and if You give too much HASH it >>>>>>>weakens engine! So my recommendation: >>>>>>> >>>>>>> 500 Mhz PC 32MB >>>>>>> 1000 Mhz PC 56MB >>>>>>> >>>>>>>The readme.txt to use 104MB for >128MB PC is not wise at all. >>>>>>> >>>>>>>Jouni >>>>>> >>>>>>I don't see, why "too much" hash could do any harm. >>>>>>Uli >>>>> >>>>>I am not sure may be there is minor bug in hashing code. With 104MB (or similar) >>>>>clearing of hash seems to take 5-10 seconds in my PC! >>>> >>>>This sounds weird. You shouldn't need 5-10 seconds for memory operations. >>>>Perhaps your hash size is too close to your memory size and Windows starts >>>>paging ? >>> >>>It depends if you simply clean the whole memory with zeroes or if you set a flag >>>for each hash entry. In that case it is indeed better not to use large hash >>>tables if you are low on time (e.g. in bullet games). >>> >>>Best wishes, >>>Steffen. >> >>Come on, 5-10 seconds ! This must be massive hard disk access. A "memset" for >>hundreds of MB can't take that long. > >It's not hard disk access - I have 192MB RAM installed and disk LED is not >blinking either. > >Jouni That's peculiar. Perhaps, Steen is doing something very special here with the hash table ? On my 450 Mhz PC, it takes certainly less than 1/2 second for Comet to intialize a hash table of 78 MB. Or has the hardware/operating system of some PCs to do additional efforts in order to manage the memory above 64 MB ? Uli
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