Don- Don't understand Komodo 4?? A bug??

[lkaufman]

Here on my Intel (no SSE) I have:

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq -

Engine: Komodo32 3 32bit (256 MB)
von Don Dailey, Larry Kaufman

18.20 0:34 +0.17 1.d4 Sf6 2.Sc3 d5 3.Lf4 Lf5 4.e3 e6
5.Ld3 Sc6 6.Sf3 Lb4 7.O-O a6 8.h3 O-O
9.a3 Lxc3 10.bxc3 Se4 (16.127.663) 469

Bester Zug: d2-d4 Zeit: 0:47.362 min K/s: 469.066 Knoten: 22.164.220

and

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq -

Engine: Komodo32 Version 4 (256 MB)
von Don Dailey, Larry Kaufman

16.20 0:29 +0.16 1.d4 d5 2.Sf3 Sf6 3.Lf4 Lf5 4.e3 Sc6
5.Ld3 e6 6.O-O Ld6 7.Sc3 O-O 8.Lxf5 exf5
9.Dd3 g6 (4.550.989) 153

17.01 0:37 +0.20 1.d4 d5 2.Sf3 Sf6 3.c4 e6 4.Sc3 Sc6
5.e3 Le7 6.cxd5 exd5 7.a3 Se4 8.Ld3 Sxc3
9.bxc3 Dd6 10.O-O Lg4 (5.798.938) 153

17.20 0:41 +0.20 1.d4 d5 2.Sf3 Sf6 3.c4 e6 4.Sc3 Sc6
5.e3 Le7 6.cxd5 exd5 7.a3 Se4 8.Ld3 Sxc3
9.bxc3 Dd6 10.O-O Lg4 (6.345.822) 153

Bester Zug: d2-d4 Zeit: 0:47.393 min K/s: 153.502 Knoten: 7.228.242


Komodo 3 is much faster

Werner, I cannot dispute what you show, but in an email not long ago, Don told me not to worry, it was just as fast as Komodo 3- just measuring more accurately. This is not from me- but I trust what Don tells me. (And what the hell do I know anyway)


Best regards,

george/CCRL

There should be a reported slowdown of perhaps 20% (earlier I said 10% but that was too low) from K3 to K4 due to changed node counting. But based on the above reports, on the 32 bit version the slowdown is far greater than this, so something seems wrong. I would recommend holding off testing of the 32 bit version until we have time to investigate.