New format of Config.dat for Pepito (built from the readme!)

[Günther Simon]

Geschrieben von: / Posted by: Günther Simon at 30 July 2002 09:34:57:
For all with problems using the Pepito book etc.:
#+-----------------------------------------------+
#| Pepito's 1.53 configuration file (config.dat) |
#+-----------------------------------------------+

HASH_SIZE 32

PAWN_HASH_SIZE 12

ECACHE_SIZE 1024k

EGTB_PATH D:\Sicherheit\Chess\TBS

EGTB_CSIZE 4

RESIGN_MARGIN -1000

USE_BOOK yes

BOOK_FILE libro

libro.ind => holds the B-tree index
libro.bin => holds the data records

BOOK_RANDOM no

BOOK_LEARN yes

BOOK_WIDTH (default value: 255)

DISPLAY_MARGIN 5

GAME_STYLE aggressive

LANGUAGE English

LOGGING yes

[Gabor Szots]

Geschrieben von: / Posted by: Gabor Szots at 30 July 2002 10:00:39:
Als Antwort auf: / In reply to: New format of Config.dat for Pepito (built from the readme!) geschrieben von: / posted by: Günther Simon at 30 July 2002 09:34:57:
In the old config.dat file (for v1.42) there was a line HASH_STORE_DEPTH. I think it was for experts only (probably meaning whether the search depth should be stored in the hash or not), but I wonder if it still exists.
Gábor

[Dann Corbit]

Geschrieben von: / Posted by: Dann Corbit at 30 July 2002 10:07:23:
Als Antwort auf: / In reply to: Re: New format of Config.dat for Pepito (built from the readme!) geschrieben von: / posted by: Gabor Szots at 30 July 2002 10:00:39:

In the old config.dat file (for v1.42) there was a line HASH_STORE_DEPTH. I think it was for experts only (probably meaning whether the search depth should be stored in the hash or not), but I wonder if it still exists.

Stuff parsed in config.c:
if (!strcmp(arg, "HASH_SIZE")) {
} else if (!strcmp(arg, "PAWN_HASH_SIZE")) {
} else if (!strcmp(arg, "ECACHE_SIZE")) {
} else if (!strcmp(arg, "GAME_STYLE")) {
if (!strcmp(arg,"solid"))
else if (!strcmp(arg,"normal"))
else if (!strcmp(arg,"agressive") || // misspelled it once, it's
!strcmp(arg,"aggressive")) // here for historical reasons
} else if (!strcmp(arg, "EGTB_PATH")) {
} else if (!strcmp(arg, "EGTB_CSIZE")) {
} else if (!strcmp(arg, "BOOK_FILE")) {
} else if (!strcmp(arg, "RESIGN_MARGIN")) {
} else if (!strcmp(arg, "USE_BOOK")) {
if (!strcmp("no", arg))
} else if (!strcmp(arg, "BOOK_RANDOM")) {
BOOK_RANDOM = strcmp("no", arg);
} else if (!strcmp(arg, "DISPLAY_MARGIN")) {
} else if (!strcmp(arg, "LANGUAGE")) {
if (!strcmp(lang_piece_str[i].language,arg))
else if (!strcmp(arg, "LOGGING")) {
if (strcmp("no", arg))
else if (!strcmp(arg, "COORD_MODE")) {
if (!strcmp("yes", arg))
else if (!strcmp(arg, "BOOK_WIDTH")) {
else if (!strcmp(arg, "BOOK_LEARN")) {
if (!strcmp("no", arg))

My Ftp Site

[Günther Simon]

Geschrieben von: / Posted by: Günther Simon at 30 July 2002 10:16:47:
Als Antwort auf: / In reply to: New format of Config.dat for Pepito (built from the readme!) geschrieben von: / posted by: Günther Simon at 30 July 2002 09:34:57:

BOOK_WIDTH (default value: 255)
GAME_STYLE aggressive

I wonder why this default value is that high, cough....
(I think I will set it to 5-10 for tournaments - Carlos?)

Fot those who dont like to read readmes there are three
possible styles available:
1,solid
2,normal
3,aggressive
My first experiences were all with 'aggressive' and promising
but as usual too less games for telling more...

Günther

http://home.t-online.de/home/g.simon.rgbg/rwbc.htm

[Gabor Szots]

Geschrieben von: / Posted by: Gabor Szots at 30 July 2002 10:46:26:
Als Antwort auf: / In reply to: Re: New format of Config.dat for Pepito (built from the readme!) geschrieben von: / posted by: Dann Corbit at 30 July 2002 10:07:23:

[Carlos del Cacho]

Geschrieben von: / Posted by: Carlos del Cacho at 30 July 2002 18:56:47:
Als Antwort auf: / In reply to: some adds geschrieben von: / posted by: Günther Simon at 30 July 2002 10:16:47:

BOOK_WIDTH (default value: 255)

I wonder why this default value is that high, cough....
(I think I will set it to 5-10 for tournaments - Carlos?)
My first experiences were all with 'aggressive' and promising
but as usual too less games for telling more...

Günther

It's just all wide it can get. Of course for tournaments it's better to minimize the chance to play a ballooney (GM's do play them at times), but if you build a book restricting win/loss ratio most of the junk will already be out of the book.
(snip)
Well, I've had quite a few . I have no idea which setting is better: solid or aggressive (missing kamikaze, hehe). Sometimes it speculates too much and losses because of this, but it also plays interesting attacking games from time to time. Pepito is using this mode in WBEC.

[Carlos del Cacho]

Geschrieben von: / Posted by: Carlos del Cacho at 30 July 2002 18:58:51:
Als Antwort auf: / In reply to: New format of Config.dat for Pepito (built from the readme!) geschrieben von: / posted by: Günther Simon at 30 July 2002 09:34:57:

BOOK_RANDOM no

It's better to set this to yes, actually. The rest seems fine.

[Carlos del Cacho]

Geschrieben von: / Posted by: Carlos del Cacho at 30 July 2002 19:02:26:
Als Antwort auf: / In reply to: Re: New format of Config.dat for Pepito (built from the readme!) geschrieben von: / posted by: Gabor Szots at 30 July 2002 10:00:39:

In the old config.dat file (for v1.42) there was a line HASH_STORE_DEPTH. I think it was for experts only (probably meaning whether the search depth should be stored in the hash or not), but I wonder if it still exists.
Gábor

This was the minimun draft required to store a position in the hash table. Zero means all positions would be stored, one => all but leaf nodes, etc... I eventually took it out (I think Pepito 1.42 didn't do anything with this) since storing all positions works best all the time.

[Günther Simon]

Geschrieben von: / Posted by: Günther Simon at 30 July 2002 19:03:49:
Als Antwort auf: / In reply to: Re: New format of Config.dat for Pepito (built from the readme!) geschrieben von: / posted by: Carlos del Cacho at 30 July 2002 18:58:51:

BOOK_RANDOM no

It's better to set this to yes, actually. The rest seems fine.

But for tournaments wouldnt it be better 'no',for playing
the strongest moves always, or am I missing sth?
(BTW as always I modified the ini file for a tournament
setup right after downloading may be I should prepare double
inis for all engines for fun play if I had the time for )

Best regards,
Günther

[Carlos del Cacho]

Geschrieben von: / Posted by: Carlos del Cacho at 30 July 2002 19:19:58:
Als Antwort auf: / In reply to: Re: New format of Config.dat for Pepito (built from the readme!) geschrieben von: / posted by: Günther Simon at 30 July 2002 19:03:49:

BOOK_RANDOM no

It's better to set this to yes, actually. The rest seems fine.

But for tournaments wouldnt it be better 'no',for playing
the strongest moves always, or am I missing sth?

What this setting was supposed to do is avoid choosing a book move at random and instead do a regular search with the available moves. This is generally not a good idea unless you can afford a very deep search so that the engine really understands the strategical purpose of each move.
To choose the best move all the time just set BOOK_WIDTH to 1, it will be like tossing coins with two heads But that way you are bound to get a lot of double games. This is the best mode suited for a tournament book when you're really sure that you want that move to be played, but if moves are not hand picked or deeply analyzed I personally don't think it's the best mode. Maybe BOOK_WIDTH 3 or 4... since you will find that many times move probabilities are quite close and it's not clear whether the highest one is really the best.