Delfi 5.4 versus Glaurung and Twisted Logic, 49%

[Mike S.]

5m+2s, AthlonXP@1439 MHz
128 MB hash, ponder off
S.Canbaz' Top-10 openings
Fritz 8-GUI, Windows 98 SE

Code: Select all

Delfi 5.4   - Glaurung 2.1               9.0 - 11.0    +7/-9/=4    45.00%
Delfi 5.4   - Twisted Logic 20080620     10.5 - 9.5    +8/-7/=5    52.50%

These are 1 CPU results from AthlonXP/Win98.

With a D945 cpu and with Windows Vista, and in the Fritz GUIs 8 and 10, I have problems to use Delfi on 2 cores. It's slower than on one core. But for example in an old Shredder classic GUI, it works correctly. I did only a short test and found a speedup of ~55% in the starting position. So I guess it will also work correctly, with Arena. There seems to be a particular problem in the cooperation between Delfi if it is set to 2 threads, and the Fritz GUI (I do not have problems with other UCI/MP engines).

[Dr.Wael Deeb]

Hi Mike,
Thanks for the results....
BTW,before accusing any software for eventual bugs,blame the Vista OS