Author: Heiner Marxen
Date: 13:11:27 01/19/01
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On January 19, 2001 at 15:47:55, Paul wrote: >On January 19, 2001 at 15:32:49, Heiner Marxen wrote: > >>Now, with the correct side to move, Chest has still found "no mate in 9". >>But the timing indicate an unusually large branching factor: >># 1 0.00 0.87 1- 0 >># 2 0.01 1.00 1- 0 >># 3 0.02 0.96 89- 0 >># 4 0.06 1.09 437- 0 >># 5 0.27 1.30 1693- 0 >># 6 2.04 1.38 6662- 0 >># 7 31.09 1.49 63238- 0 >># 8 824.56 1.75 1256916- 3 >># 9 24061.56 2.19 37677207- 28929306 >>(depth, seconds, speed, nodes in-out) on a K7/600 (350 MB TT) >> >>That are already 6.7 hours. I'm not sure I will wait until the mate in 10 >>arrives. We can expect over 8 days from the above data. The last two >>lines have indicate an effective branching factor of 29.2. >>Although this is a bit better than Leonid's factor 60, it is still quite >>a bit too heavy. > >Wow!! Already expected something like this to happen ... This is where >an Athon 1200 really would help ... then it would only take 4 days ;) :-) Yes, sure, it would help somewhat. OTOH, to wait 4 days is still not fun. Normally I do not do analyses longer than a day. And I don't like all my 32 Bit counters to overflow :-( although I have replaced some with doubles, most are still 32 bit. Some (older) part of my programmer brain does not want to accept that a computation overflowing the holy 32 bit word is a valid one. ;-) Anyhow, I will stick with my K7/600 for quite some time. It is fast enough by (my) definition. I should work on the algorithms instead of looking for faster hardware. There is still much to do. Currently I work on help mates... but that is a completely different story. Heiner
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