How to check tablebases integrity

  

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Thibault de Vassal    (2010-04-01)
How to check tablebases integrity

A small tip that I just read on rybkaforum.net and that can serve again...

For checking tablebase integrity, one can use md5summer.exe

http://www.md5summer.org/download.html

Tablebases md5 files :

http://kirill-kryukov.com/chess/tablebases-online/

It looks like very useful when trying to install 6 pieces tablebases, particularly when your engine suddenly crashes when trying to access it, by the way how did you get it Wayne? TBgen.exe or download? Does anyone know how much time it takes in both cases?

What kind of computer (processor, ram) is necessary to generated 6 pieces tablebases?


Wayne Lowrance    (2010-04-05 03:22:11)
How to check tablebases integrity

Thibault, do not waste your time trying to generate them, you won't live long enough. download them at sesse.com
You need 1 terribyte to down load them all. and takes over a year I am informed.
I just started downloading lil over a month ago and have about 25 poitions total downloaded and working.
Please, a word of caution at Sesse download site. He will not allow hardware accelerators (whatever they are). DO NOT download more than a file at a time. You will get blocked.
Thibault I have not used 6 man bases yet.
Caution: Do not have your engine loaded/running when downloading, otherwise expect engine crashing.
I pass on to those interested a decent list of 50 bases to downoad.
Been at this one month +/- so as I learn I will pass on.
Wayne


Wayne Lowrance    (2010-04-05 03:26:18)
How to check tablebases integrity

1 krppkr 27,902 14.029% *$
2 krpkrp 25,779 12.962% *$
3 kppkpp 19,150 9.629% *$
4 kpppkp 8,474 4.261% * $
5 kbpkpp 7,043 3.541% * $
6 krpkpp 6,966 3.503% *$
7 knpkpp 6,487 3.262% *$
8 kbpknp 5,389 2.710% *$
9 krpkbp 4,648 2.337% *$
11 kbppkb 3,680 1.850% *$
12 krppkp 3,529 1.774% *$
13 knppkn 3,528 1.774% *$
14 kbppkp 3,499 1.759% *$
15 knppkp 3,098 1.558% *$
16 krpknp 3,095 1.556% *$
17 knppkb 3,083 1.550% *$
18 knpknp 2,910 1.463% *$
19 kqpkqp 2,823 1.419% *$
20 kbpkbp 2,525 1.270% *$
21 kbppkn 2,514 1.264% *$
22 kqppkq 2,302 1.157% *$
23 kqppkp 2,240 1.126% *$
24 krbpkr 2,181 1.097% *$?
25 kpppkr 2,168 1.090% *$
26 krbkrp 2,017 1.014% *$
27 kqpkrp 1,909 0.960% $
28 krnpkr 1,875 0.943% -
29 kbppkr 1,644 0.827% -
30 krnkrp 1,555 0.782%
31 kqrkrp 1,521 0.765%
32 kpppkn 1,243 0.625% -
33 knppkr 1,208 0.607% -
34 kpppkb 1,124 0.565% *$
35 kpppkq 1,027 0.516% -
36 krppkb 805 0.405% -
37 krppkq 789 0.397% -
38 krpppk 719 0.362% --
39 kqrpkr 670 0.337% -
40 krppkn 651 0.327% -
41 kqpknp 549 0.276%
42 kqpkbp 531 0.267%
43 kbnpkr 494 0.248% -
44 kqpppk 479 0.241% --
45 kppppk 456 0.229% --
46 kbnpkb 424 0.213% -
47 kbpppk 416 0.209% --
48 krrkrp 400 0.201%
49 kqbpkp 396 0.199% -
50 kqrpkp 381 0.192%


Wayne Lowrance    (2010-04-05 03:38:16)
How to check tablebases integrity

The files I have marked ($) are down loaded and working and have used up 138 gigbyte of harddrive.
I have a 2 terabye hard drive. Anything else you wanna know Thibault ? Wayne


Wayne Lowrance    (2010-04-05 03:43:53)
How to check tablebases integrity

Thibault, Oh yea. I recommended after downloading all of the files pertaining to a egtb position check it out on your engine B4 proceeding to the next position download.
Wayne


Thibault de Vassal    (2010-04-05 13:03:41)
How to check tablebases integrity

Thanks for all these informations Wayne! Actually I'm not sure if I will start to download it before a few months/years more, but it may be useful for others meanwhile.


Wayne Lowrance    (2010-04-05 18:08:19)
How to check tablebases integrity

Okey Dokey Thibault, no problem. I only ask that those interested and use Sesse download site that they respect it with his wishes. That I have aready cautioned. He maintains this site at his own expense.
He had probem with abuse in the past i understand and has said he would pull the plug, if any further abuse, So I myself am very grateful and and I am very carefull about hogging the server bandwidth,
Wayne