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Subject: Re: 64 bit --and chess of course

Author: Anthony Cozzie

Date: 06:25:56 12/17/04

Go up one level in this thread


On December 16, 2004 at 22:23:49, Dann Corbit wrote:

>On December 16, 2004 at 20:56:56, Robert Hyatt wrote:
>
>>On December 16, 2004 at 18:25:42, Vincent Lejeune wrote:
>>
>>>On December 16, 2004 at 17:31:10, Scott Gasch wrote:
>>>
>>>>On December 16, 2004 at 14:46:33, Dann Corbit wrote:
>>>>
>>>>>On December 16, 2004 at 03:37:46, Gian-Carlo Pascutto wrote:
>>>>>
>>>>>>On December 15, 2004 at 22:24:49, Alex  wrote:
>>>>>>
>>>>>>>Of course it would be foolish to buy a New computer now......  Micrsoft is going
>>>>>>>to present a 64 bit OS nest year, the Christmas prices of new computers will
>>>>>>>drop like a BRICK by Jan 1..........  But ! Let us speculate.... Hmmmmmmmmmm
>>>>>>>What will 64 bit DO for chesss programs ....Yes yes I KNOW AMD has New processor
>>>>>>>that does 64 bit..... but what is the difference ..reallY?  D
>>>>>>
>>>>>>Speed.
>>>>>>
>>>>>>You can expect programs to get 10-60% faster from 64 bit mode.
>>>>>>
>>>>>>This is in addition to the Athlon64 already being so fast in 32 bit mode.
>>>>>
>>>>>Another potential advantage is the large address space.
>>>>>
>>>>>With terabytes of ram directly addressable, potentially totally new solution
>>>>>ideas may be formulated.
>>>>>
>>>>>For instance, you could memory map the 3-4-5 man tablebase files and lose the
>>>>>disk access penalty.  That might make them give a large Elo boost, while the
>>>>>disk access method for 32 bit systems seems to be about break even.
>>>>>
>>>>>You could have 20 GB hash tables.
>>>>>
>>>>>You could store (in ram) a large tree of every chess game ever played together
>>>>>with statistical information on each node.
>>>>
>>>>...of course this all assumes you have a machine with 20Gb of physical memory
>>>>and a chipset that supports that much RAM.  Until the cost of memory comes way
>>>>down, you won't see me mapping EGTB files (compressed or not) into memory. :)
>>>>
>>>>Scott
>>>
>>>I'd suggest 2 pen drive USB like this :
>>>http://www.supermediastore.com/pendrive-4gb-flash-drive.html
>>>
>>>Yes, no that cheap, but all 3-4-5 egtb way faster than disk
>>
>>
>>"faster than disk"?  What kind of disk do you use for your egtb's?  Floppy or
>>CDRom?  :)  The think you gave a link to is horribly slow compared to anything
>>except for CD/floppy drives...
>
>480Mbps seems pretty fast to me.
>What kind of disks are you using?
>;-)

That page is pretty funny, because they brag about how USB2 is 20x faster than
USB1, but then they are forced to point out their drive is slower than even USB1
:)

anthony



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