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Important IvanHoe Settings
Posted: Tue Jul 06, 2010 2:47 am
by kingliveson
I like the following settings combined with RobboTripleBases:
Repeating Time Control
Code: Select all
TimeEasyFactor 14
TimeOrdinaryFactor 64
TimeAbsolutePercent 24
BufferTime 2000
Code: Select all
TimeEasyFactor 13
TimeOrdinaryFactor 48
TimeAbsolutePercent 20
BufferTime 2000
Code: Select all
TimeEasyFactor 15
TimeOrdinaryFactor 60
TimeAbsolutePercent 20
BufferTime 2000
These time management settings are based not just on
sample games posted, but also through analysis and observation. Chances are they are not optimal. Also, only tested blitz games with ponder off. Am most unsure about the repeating time control -- still working on it.
AllowInstantMoveFromHash should be off -- only good for hyper-bullet matches in my opinion. It is designed for ponder off games, but I think it has a negative effect.
Pawn Hash is another important setting; it should be 1/16th of total hash size. For example, if Hash size is set to 512 MB, Pawn Hash should be 32 MB. You can get away with 1/8th, but anything larger will have a negative effect.
Re: Important IvanHoe Settings
Posted: Tue Jul 06, 2010 2:28 pm
by kingliveson
Edited the Incrementing Time Control settings. Also, I noticed the Repeating Time Control setting performs better on my Phenom compared to slower Athlon. If anyone finds these settings to be awful, not optimal, or has better configuration, please let us know.
Re: Important IvanHoe Settings
Posted: Tue Jul 06, 2010 4:28 pm
by BTO7
Thanks king ...great stuff here ! Appreciate the tips.
BT
Re: Important IvanHoe Settings
Posted: Tue Jul 06, 2010 4:36 pm
by benstoker
kingliveson wrote:I like the following settings combined with RobboTripleBases:
Repeating Time Control
Code: Select all
TimeEasyFactor 14
TimeOrdinaryFactor 64
TimeAbsolutePercent 24
BufferTime 2000
Code: Select all
TimeEasyFactor 13
TimeOrdinaryFactor 48
TimeAbsolutePercent 20
BufferTime 2000
Code: Select all
TimeEasyFactor 15
TimeOrdinaryFactor 60
TimeAbsolutePercent 20
BufferTime 2000
These time management settings are based not just on
sample games posted, but also through analysis and observation. Chances are they are not optimal. Also, only tested blitz games with ponder off. Am most unsure about the repeating time control -- still working on it.
AllowInstantMoveFromHash should be off -- only good for hyper-bullet matches in my opinion. It is designed for ponder off games, but I think it has a negative effect.
Pawn Hash is another important setting; it should be 1/16th of total hash size. For example, if Hash size is set to 512 MB, Pawn Hash should be 32 MB. You can get away with 1/8th, but anything larger will have a negative effect.
What does 'buffertime' setting do exactly?
Re: Important IvanHoe Settings
Posted: Tue Jul 06, 2010 5:38 pm
by kingliveson
Incrementing Time Control modified slightly to:
Code: Select all
TimeEasyFactor 15
TimeOrdinaryFactor 66
TimeAbsolutePercent 22
BufferTime 2000
Re: Important IvanHoe Settings
Posted: Thu Jul 08, 2010 3:00 am
by kingliveson
I have settled with these for now:
Repeating Time Control
Code: Select all
TimeEasyFactor 14
TimeOrdinaryFactor 64
TimeAbsolutePercent 24
BufferTime 2000
Code: Select all
TimeEasyFactor 13
TimeOrdinaryFactor 48
TimeAbsolutePercent 20
BufferTime 2000
Code: Select all
TimeEasyFactor 18
TimeOrdinaryFactor 69
TimeAbsolutePercent 23
BufferTime 2000
Re: Important IvanHoe Settings
Posted: Fri Jul 09, 2010 4:33 am
by kingliveson
Putting it altogether; small sample data on how these settings were derived is available here:
http://www.open-chess.org/viewtopic.php?f=4&t=313
Repeating Time Control: 4'/40+4'/40+4'/40 (4 minutes for first 40 moves, then 4 minutes for next 40 moves, and so on).
Sudden Death Time Control: 1+0, 10+0, 60+0, etc.
Incrementing Time Control: 1+1, 15+10, 60+30, etc.
Ponder Off
Repeating Time Control
Code: Select all
TimeEasyFactor 14
TimeOrdinaryFactor 64
TimeAbsolutePercent 24
BufferTime 2000
Code: Select all
TimeEasyFactor 13
TimeOrdinaryFactor 48
TimeAbsolutePercent 20
BufferTime 2000
Code: Select all
TimeEasyFactor 18
TimeOrdinaryFactor 69
TimeAbsolutePercent 23
BufferTime 2000
Code: Select all
TimeEasyFactorPonder 31
TimeOrdinaryFactor 64
TimeAbsolutePercent 24
BufferTime 2000
Code: Select all
TimeEasyFactorPonder 28
TimeOrdinaryFactor 48
TimeAbsolutePercent 20
BufferTime 2000
Code: Select all
TimeEasyFactorPonder 39
TimeOrdinaryFactor 69
TimeAbsolutePercent 23
BufferTime 2000
: Off
Pawn Hash: 1/16th of total hash size
Note: There is good probability these time management settings
are not optimal. The ponder-on settings have not been tested at all -- they are based on a formula which is simply scaling ponder-off TimeEasyFactor to default TimeEasyFactorPonder. Am still working on it, and will update if something better is found.
Edit: IvanHoe version used in all these tests is unmodified from source, and is available here: http://chess.cygnitec.com/engine/ivanhoe/
Re: Important IvanHoe Settings
Posted: Tue Jul 13, 2010 7:48 pm
by kingliveson
Code: Select all
Time Management 5401 2010
1 2 3 4
1 IvanHoe 9.54b-TM10 x64 *********** 26.0 - 24.0 27.5 - 22.5 25.5 - 24.5 79.0/150
2 IvanHoe 9.54b-TM00 x64 24.0 - 26.0 *********** 24.5 - 25.5 26.5 - 23.5 75.0/150
3 IvanHoe 9.54b-TM11 x64 22.5 - 27.5 25.5 - 24.5 *********** 25.0 - 25.0 73.0/150 0.00
4 Deep Rybka 4 SSE42 x64 24.5 - 25.5 23.5 - 26.5 25.0 - 25.0 *********** 73.0/150 0.00
Missing from the list is
IvanHoe 9.54b-TM01 x64 which will be thrown in along with Stockfish 1.8 next. Rybka was included to avoid incestuous results. 50 games between each pair of engines definitely are not enough -- more games ahead.
IvanHoe 9.54b-TM00 x64 + Neither Option
IvanHoe 9.54b-TM01 x64 + Option 2
IvanHoe 9.54b-TM10 x64 + Option 1
IvanHoe 9.54b-TM11 x64 + Option 1 & 2
Option 1
Code: Select all
#if 0 /* about the 0.6 elo for the hasslings */ /* measure to UCI? */
if (!mtg)
{
rat = ((double) (TIME + 1)) / ((double) (OPP_TIME + 1));
if (rat > 2.0)
rat = 2.0;
if (rat < 0.5)
rat = 0.5;
if (rat > 1.0)
{
mult = ((int) (1024.0 * rat)) - 1024;
DESIRED_TIME += (mult * DESIRED_TIME) >> (10 + 2); /* max 1/4 */
}
else
{
mult = ((int) (1024.0 / rat)) - 1024;
DESIRED_TIME -= (mult * DESIRED_TIME) >> (10 + 2); /* max 1/4 */
}
}
#endif
Code: Select all
#if 0
if (ROOT_DEPTH && ROOT_SCORE < -50)
DESIRED_TIME += DESIRED_TIME >> 3;
if (ROOT_DEPTH && ROOT_SCORE < -100)
DESIRED_TIME += DESIRED_TIME >> 3;
#endif
The 1+0 (25
positions) ponder-off tournament used default settings for all engines. AllowInstantMoveFromHash default is off by compile. No EGTB was used. The code snippets are additional time management functions -- disabled by default in
control.c.
Time Losses
IvanHoe 9.54b-TM00 x64 - 3
IvanHoe 9.54b-TM10 x64 - 4
IvanHoe 9.54b-TM11 x64 - 5
Deep Rybka 4 SSE42 x64 - 3
Tournament data available upon request.
Additionally, special thank you goes out to IvanHoe developers for listening to complaints about poor time management. A great effort was put in beginning from 999958-beta release to remedy the issue. Thank you!
Re: Important IvanHoe Settings
Posted: Tue Jul 13, 2010 8:55 pm
by robbolito
Hi kingliveson,
I am glad that you got good scores against Rybka.
The versions I have used so far did not do so well.
When can we expect the release of your compiles.
Thanks.
Re: Important IvanHoe Settings
Posted: Thu Jul 15, 2010 3:47 am
by kingliveson
robbolito wrote:Hi kingliveson,
I am glad that you got good scores against Rybka.
The versions I have used so far did not do so well.
When can we expect the release of your compiles.
Thanks.
If you are interested, you can test the attachment.