why when i create a *.rsh file, and after i finish games it dissapears????!!!
Is it a bug? does really Preserve analysis run ok? or what should i do to work the problem out.
Thx
Dr Wesler
Preserve analysisin Rybka 3
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Re: Preserve analysisin Rybka 3
You need to give the file a name and a path I believe.chesstango wrote:why when i create a *.rsh file, and after i finish games it dissapears????!!!
Is it a bug? does really Preserve analysis run ok? or what should i do to work the problem out.
Thx
Dr Wesler
Exsample: C:\Hash\Rybka3.rsh
"Good decisions come from experience, and experience comes from bad decisions."
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Ted Summers
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Ted Summers
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Re: Preserve analysisin Rybka 3
i did so, but it dissapears......
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- Posts: 6363
- Joined: Mon Mar 13, 2006 2:34 pm
- Location: Acworth, GA
Re: Preserve analysisin Rybka 3
Hmmm, That is very odd. I have not seen that happen over here. Maybe you can find more info here:chesstango wrote:i did so, but it dissapears......
http://www.rybkachess.com/index.php?aus ... stent+hash
Persistent Hash
Will persistent hash store information when analyzing, or also when playing games?
Both. There is no real difference in general between play and analysis. Note that persistent hash is disabled by default and must be manually enabled.
How does persistent hash work together with trees from IDeA etc. in Aquarium?
They are separate and don't interact in any special way. The persistent hash allows Rybka to remember her analysis, while the tree format of IDeA independently remembers the appropriate tree data.
If I analyse a position which has already been analysed, but take more time now, so that the result would be better, is the better result automatically stored, overwriting the lesser result?
Yes. The persistent hash quite naturally does everything which is logical.
How is upstream propagation of the persistent hash different from the old position learning?
Position learning is a generic term. The persistent hash is one specific form of learning.
When you merge two Persistent Hash files, it's said that the "merged information will be contained in the main persistent hash file, whose size will be unchanged". When you merge two files, you actually add information, unless they're identical, and if you don't delete anything from the original "main persistent hash file", the size should always be bigger after adding new information from the secondary file. Am I missing something here?
During the merging of the two persistent hash files, higher-priority information is kept in the merged file while lower-priority information is discarded. Discussion can be found here.
Persistent hash resizing is failing for me.
Make sure that you have a good amount of extra space on your hard drive. Ditto for persistent hash merging.
Persistent hash resizing is failing for me.
Persistent hash resizing and merging only works with relative filenames (ie. "Main.rph") and not absolute filenames (ie. "C:Main.rph"). See the bugs section for workarounds.
Will the persistent hash work in the Fritz 10 GUI or do you need Aquarium to use it?
It will work in every interface.
When I´m working with Rybka 3 under Fritz10 with persistent hash I can set the path for the hash files and the saved hash file to be stored, but where is the "save hash-button" which I have to invoke to store the hash File (.rsh)? I can only find the stored persisten hash file .rph not .rsh
Older versions of the Fritz interface don't support UCI button parameters, so hash saving and hash loading are not possible in those interfaces.
I´m working with Rybka 3 under the Fritz 10 interface. Where are the "Save Hash" and "Load Hash" buttons?
Versions of the Fritz interface which are older than the Rybka 3 version (ie. up to and including Fritz 11) do not support UCI button parameters, so hash saving and hash loading are not possible in those interfaces.
Does the persistent hash slow down the engine?
No. Any slowdown is negligible.
Should I get a faster hard drive (perhaps a pen drive) to store the persistent hash?
No. The improvement in persistent hash performance from a faster hard drive is negligible.
Is the persistent hash also useful in blitz games?
Sure, it can be used to play the first few moves out of book, in positions which have been enountered before but not often enough to include in the opening book. The 'Play Depth' parameter indicates the depth of persistent hash entry needed for Rybka to play an instant move during a game. Make sure to set it to a value consistent with the existing time control.
Is the 'preserve analysis' option useful in blitz games?
No. Preserve analysis is intended for scenarios where analyzed positions will later be revisited.
Do "Preserve Analysis" and "Persistent Hash" amount to almost the same thing?
The mechanisms are completely independent, although they have a similar aim, which is to keep older analysis around.
Preserve Analysis will decrease engine performance and it will be lost when the engine quits. Persistent hash doesn't decrease performance and the analysis is kept between sessions.
Can you exchange persistent hash files between the Aquarium Rybka and the ChessBase Rybka?
Yes. The persistent hash files are handled purely by the engine.
Will Rybka mix analysis done with different contempt settings in the persistent hash? Does she do anything to correct for the inconsistencies which this can lead to?
Yes to the first question, no to the second.
Rybka will always write to and read from the persistent hash when the persistent hash is enabled. If analysis is done at different times with different contempt values, the various values in the persistent hash may not be completely consistent with each other. This shouldn't be a big problem. If you'd like to avoid it, you'll have to manage your persistent hash files manually.
It seems that the persistent hash file is not updated until Rybka closes. Is this correct?
No. The persistent hash file is written to and read from continuously during Rybka searches when this feature is enabled. However, Windows doesn't actually update the file date until Rybka closes the file.
"Good decisions come from experience, and experience comes from bad decisions."
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Ted Summers
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Ted Summers
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Re: Preserve analysisin Rybka 3
"Preserve analysis" does not create any file by itself. Also you don't need to specify a path.