Help with Crafty....please!

[Werewolf]

Hi,
I am using Crafty 23.0 JA build in Fritz (i.e it has been converted to UCI using Jim's adaptor)

My problem is Crafty is only using 1 CPU instead of all 4. I changed the RC file for Crafty 22.9 and it worked FINE (i.e used all cores), but in 23.0 it still only uses 1 core.

A copy of the RC file is below

#egtb
#adaptive 750K 24M 192M 24M 48M
#tbpath=d:\progra~1\arena\nalimov
cache=32M
ponder off
#
# (for use use with ponder on)
# mode=tournament
#
# (Allows Crafty to try to win drawn games (according to Endgame Tables))
swindle on
#
# (default)
learn 7
#
# (default)
book random 1
#
bookw freq 0.7
bookw ratio 0.8
bookw eval 0.6
bookw learn 1
bookw cap 0.5
book width 4
#
#(default = book on)
book on
#
show book
log=off
#
# (Increases Crafty's MaxThreads to 2 for a dual CPU computer )
#mt=4
smpmt=4
#
# (Make Crafty not use cpu on opponents time)
#smpnice=1
#
# (Makes crafty use a lot more time on the first 8 moves out of book)
timebook 80 8
#adaptive NPS a
hash=512M
hashp=64M
exit

[sje]

One idea: Earlier versions of Crafty needed to be compiled with a -DCPU=4 option to enable a four core SMP search. Perhaps this is true with the current version and that you have an executable that will only support a single thread.

[Werewolf]

uh-oh. Only Jim would know the answer to that I guess...

[Dann Corbit]

Change:
smpmt=4
to:
mt=4

[Jim Ablett]

uh-oh. Only Jim would know the answer to that I guess...

Hi Carl,

Crafty 23.0 JA compiled with support for 1024 cores
Sedat Canbaz asked for this feature to enable 'future proofing!'

Jim.

[Howard E]

Here's my rc file. mt= instead of smpmt= might help.

mt=8
egtb
tbpath=C:\Chess\Nalimov
analyze
display changes
hash=512M
hashp=128M
cache=32M
ponder=off
smpnice=1
log=off
exit

[Dr.Wael Deeb]

uh-oh. Only Jim would know the answer to that I guess...

Hi Carl,

Crafty 23.0 JA compiled with support for 1024 cores
Sedat Canbaz asked for this feature to enable 'future proofing!'

Jim.

[Werewolf]

I did that but it didn't help. Here's my new file:

#egtb
#adaptive 750K 24M 192M 24M 48M
#tbpath=d:\progra~1\arena\nalimov
cache=32M
ponder off
#
# (for use use with ponder on)
# mode=tournament
#
# (Allows Crafty to try to win drawn games (according to Endgame Tables))
swindle on
#
# (default)
learn 7
#
# (default)
book random 1
#
bookw freq 0.7
bookw ratio 0.8
bookw eval 0.6
bookw learn 1
bookw cap 0.5
book width 4
#
#(default = book on)
book on
#
show book
log=off
#
# (Increases Crafty's MaxThreads to 2 for a dual CPU computer )
mt=4
#
# (Make Crafty not use cpu on opponents time)
#smpnice=1
#
# (Makes crafty use a lot more time on the first 8 moves out of book)
timebook 80 8
#adaptive NPS a
hash=512M
hashp=64M
exit

[Dann Corbit]

Start crafty from the command line or a DOS window and tell us what gets printed out by doing a cut and paste.

I guess the clue you need is there.

[Dirt]

Remove the log=off and then look at the log file for clues.