Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Tablebases

Author: Sune Fischer

Date: 15:40:18 01/22/02

Go up one level in this thread


On January 22, 2002 at 17:59:24, James T. Walker wrote:

>On January 22, 2002 at 14:40:46, Robert Hyatt wrote:
>
>>On January 22, 2002 at 12:38:17, James T. Walker wrote:
>>
>>>On January 22, 2002 at 12:26:30, Sune Fischer wrote:
>>>
>>>>On January 22, 2002 at 11:58:39, Robert Hyatt wrote:
>>>>
>>>>>On January 22, 2002 at 10:30:51, James T. Walker wrote:
>>>>>
>>>>>>On January 22, 2002 at 10:27:30, Robert Hyatt wrote:
>>>>>>
>>>>>>>On January 22, 2002 at 04:57:05, Sune Fischer wrote:
>>>>>>>
>>>>>>>>On January 22, 2002 at 00:35:48, Robert Hyatt wrote:
>>>>>>>>
>>>>>>>>>On January 21, 2002 at 18:50:22, David Rasmussen wrote:
>>>>>>>>>
>>>>>>>>>>How much space does all the 5-man tables take?
>>>>>>>>>>When people write 3-4-5 man tablebases, do they mean _all_ of them, or just all
>>>>>>>>>>3 and 4 man, and then some 5 man. If yes, which ones?
>>>>>>>>>>
>>>>>>>>>>/David
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>All of the 3/4/5 piece files require about 7.5 gigs of space...
>>>>>>>>
>>>>>>>>I think you mean 7.05 GB.
>>>>>>>>:)
>>>>>>>>
>>>>>>>>-S.
>>>>>>>
>>>>>>>
>>>>>>>No... I mean _exactly_ 7411980 bytes.
>>>>>>>
>>>>>>>:)
>>>>>>
>>>>>>If you have only 7 Megabytes you are missing a lot
>>>>>
>>>>>
>>>>>Sorry... that was in terms of 1024 byte blocks.  I have 'em all, believe
>>>>>me.  :)
>>>>>
>>>>>that is 7,589,867,520 bytes if my math works out right.  :)
>>>>
>>>>
>>>>and 7,589,867,520 bytes/1024^3 = 7.068 gigabytes :)
>>>
>>>Not on my calculator!
>>
>>
>>Depends on your definition of "gigabyte".  If you use the rounded value of
>>1,000,000,000 bytes, you get one answer. If you use the right power of 2,
>>(2^30) you get a different answer.  :)
>
>Well I was responding to the math problem he posted.
>"7,589,867,520 bytes/1024^3 = 7.068 gigabytes"
>When I divide 7,589,867,520 by 1024^3  I get 7411.98 which is what you had.

no because 1024^3 means 1024*1024*1024, so

7,589,867,520 /(1024*1024*1024) = 7.06861

>Now If 1 gigabyte is 1024 Megabytes and 1 Megabyte is 1024 Kilobytes and 1
>Kiltbyte is 1024 bytes then you have to divide by 1024 several times and then
>you get the 7.0686 Gigabytes.

Exactly ;)

Of cause Hyatt is correct that G for giga is actually 1,000,000,000 and not
1024^3, only computer folks misuse the k, M and G when talking about diskspace.

-S.



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.