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zullil wrote: ↑Sat Aug 17, 2019 12:07 pm

mjlef wrote: ↑Sat Aug 17, 2019 3:25 am

zullil wrote: ↑Fri Aug 16, 2019 12:09 pm

mjlef wrote: ↑Fri Aug 16, 2019 6:24 am I think I need to do some more programming to take advantage of an 8 NUMA node machine. All those cores trying to access memory requires more speical memory management, so we will work on it. Komodo was getting about 70-90 million nps for much of the positions, but faster in endgames. With some work it can probably do better, but each processor doubling gives less and less elo and at some point, more is less.

Out of curiosity, what are the "node distances" on that machine? Under Linux, that table is provided by running

Code: Select all

numactl --hardware

here they are:
node distances:
node 0 1 2 3 4 5 6 7
0: 10 20 20 20 20 20 20 20
1: 20 10 20 20 20 20 20 20
2: 20 20 10 20 20 20 20 20
3: 20 20 20 10 20 20 20 20
4: 20 20 20 20 10 20 20 20
5: 20 20 20 20 20 10 20 20
6: 20 20 20 20 20 20 10 20
7: 20 20 20 20 20 20 20 10

Thanks. So all other nodes are "equidistant" from any one fixed node. So even if a given search thread wanders off its preferred node, the penalty is never too severe.

It's a benefit of the new UPI interconnect, however the actual latency seems to be higher on average than the earlier QPI version, at least for TT-style access patterns.

Congratulations Mark and Larry for the well deserved win.

Komodo has been the champion for the fourth time consecutively. Except Komodo neither program has won more than 2 consecutive tournaments.

Stockfish has not participated in this tournament. Komodo is not responsible for this.
Bobby Fischer (2780 elo) hadn't participate at 1975 World Champion Match. But we accept Anatoly Karpov (2705 elo) the 12th World Chess Champion.

Stockfish is the strongest engine, but Komodo is the World Champion.