Author: Tony Werten
Date: 02:26:35 08/18/03
Go up one level in this thread
On August 18, 2003 at 04:51:31, Jouni Uski wrote: >On August 18, 2003 at 04:20:01, Tony Werten wrote: > >>On August 17, 2003 at 19:05:57, Michael P. Nance Sr. wrote: >> >>>On August 17, 2003 at 17:44:53, Tony Werten wrote: >>> >>>>On August 17, 2003 at 17:34:14, William Penn wrote: >>>> >>>>>I've noticed that when running Shredder 7.04 UCI engine in CB Shredder 7 GUI in >>>>>infinite analysis mode, there's a problem with the kN and kN/s counters after >>>>>the total KN exceeds about 4,200,000. That's not an exact number, but >>>>>approximated. >>>> >>>>I can make the pretty precise gues that problems start after 4,294,967,295 >>>>nodes. >>>> >>>> >>>>>In any case, kN reverts to zero at that point and begins counting >>>>>up again. The value of kN/s also drops to zero then start increasing again (very >>>>>slowly). I believe the 7.04 engine continues to work OK, just that counter is >>>>>buggy. >>>> >>>>It's not buggy, it's 32 bit. >>>> >>>>Tony >>>> >>>> >>>>>WP >>>So with 64 bit technology it would go further? >> >>With a 64 bit counter it already would, (They are available in 32 bit >>environment) but they are not the first logical choice (32 bit is). >> >>With todays fast computers, in some special cases (when you let it run for a >>couple of days) 32 bit is not enough. >> >>OTOH hardly anybody lets it run that long and 64 bit numbers are a bit slower >>then 32 bit. >> >>Tony > >Days? With most engines 32 counter resets after 1 hour on Pentium 2 GHz! What does that have to do with my reply ? Most engines don't have a KN counter and most engines aren't called Shredder. Tony > >Jouni
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