Crafty 22.8

[bob]

As much as I hate to do this, I just released 22.8. I discovered that some important changes to the "GenerateChecks()" procedure had been lost, probably in copying files around to different machines (I work on my laptop, on my office box, and on two different clusters). This version has the correct GenerateChecks() function included. I have not yet tested to see how this effects Elo, if it does, but will test it today and report the results for information.

[geots]

As much as I hate to do this, I just released 22.8. I discovered that some important changes to the "GenerateChecks()" procedure had been lost, probably in copying files around to different machines (I work on my laptop, on my office box, and on two different clusters). This version has the correct GenerateChecks() function included. I have not yet tested to see how this effects Elo, if it does, but will test it today and report the results for information.

For us testers, these quick releases are sometimes a bit of a pain, but never feel bad or hate to tell us that you have a new version that may be better. I never look a gift horse in the mouth.

Best,

[bob]

As much as I hate to do this, I just released 22.8. I discovered that some important changes to the "GenerateChecks()" procedure had been lost, probably in copying files around to different machines (I work on my laptop, on my office box, and on two different clusters). This version has the correct GenerateChecks() function included. I have not yet tested to see how this effects Elo, if it does, but will test it today and report the results for information.

For us testers, these quick releases are sometimes a bit of a pain, but never feel bad or hate to tell us that you have a new version that may be better. I never look a gift horse in the mouth.

Best,

So far the testing suggests +1 Elo, so it is not exactly a world-beating bug fix.

You could continue to test the older version, or you could switch to the new version but combine the results so that 22.7 is combined with 22.8 into one 22.8 version. There's not enough difference to measure from this fix...

[Jim Ablett]

(logo by Oscar A Orozco)

Crafty 22.8 by Prof Robert Hyatt

Windows x64 & Win32 Intel compiler 10 p.g.o builds.

http://www.mediafire.com/?wknz5ydq2nn

(also available from my homepage)

Jim.

[Philippe]

What is the difference between the full features compiles and the speed compiles ?
Thanks.

[Dann Corbit]

What is the difference between the full features compiles and the speed compiles ?
Thanks.

With the full featured compiles, you get things like the EPD interface.
It is useful for operations against files of EPD records. For instance, suppose that you have a file of EPD test positions called test.epd. With the full featured compiles you can do this:

epdpfga test.epd test.out

which will analyze test.epd and store the results in test.out.

You can check to see how many crafty got right by doing:

epdscor test.out

For game playing using a GUI, these extra features won't add anything. They are just useful for geeks like me who fool around with crafty using the command line interface.

[Jim Ablett]

What is the difference between the full features compiles and the speed compiles ?
Thanks.

With the full featured compiles, you get things like the EPD interface.
It is useful for operations against files of EPD records. For instance, suppose that you have a file of EPD test positions called test.epd. With the full featured compiles you can do this:

epdpfga test.epd test.out

which will analyze test.epd and store the results in test.out.

You can check to see how many crafty got right by doing:

epdscor test.out

For game playing using a GUI, these extra features won't add anything. They are just useful for geeks like me who fool around with crafty using the command line interface.

The 'full feature' compiles also have available the handy new 'Skill' command for chess players so you can adjust Crafty's playing strength.
Adding the extra command-line features does add a small performance hit, hence the two different compiles 'speed' & 'full feature'.

Jim.

[Werner]

[So far the testing suggests +1 Elo, so it is not exactly a world-beating bug fix.
You could continue to test the older version, or you could switch to the new version but combine the results so that 22.7 is combined with 22.8 into one 22.8 version. There's not enough difference to measure from this fix...

Hi Bob,
what do you suggest: can we do the same with the results of 22.4 (64bit 1CPU) - or its better (as difference is more than 20 elos) to start a new test series with 2.8 ?

best

[Steve Maughan]

... had been lost, probably in copying files around to different machines

Slightly off topic but I've been using DropBox to manager my documents and code across different machines. I'm really impressed by it - it also runs on Windows, Apple and Linux. Take a look at www.getdropbox.com.

Best regards,

Steve

[AdminX]

... had been lost, probably in copying files around to different machines

Slightly off topic but I've been using DropBox to manager my documents and code across different machines. I'm really impressed by it - it also runs on Windows, Apple and Linux. Take a look at www.getdropbox.com.

Best regards,

Steve

Thank you Steve! That is a very cool little app.

Thanks Again
Ted Summers