IvanHoe52dU by Vlad0

Vlad writes....

Hi girls :)

I've just uploaded to my Immortal's blog
the new engines 52dU. Which are attached
to this e-mail as well.

And the content of the blog (if You are unable to read it on Immotals):

I compiled "universal" engines only and will make
only these compiles in the future. Because the difference in speed between "universal" engine
and this specialized for popcnt or non-popcnt
CPU is so negligible (0.01--0.03%) that hardly
can influence the results of any match.

Differences compared to 52cU:
1) MAX_CPUS is now 64 instead of 8 (less crah on Intel's i7 octas and 6 cores)
2) Analyse mode bug fix from v. 63Mod5U is merged here;
3) 32x engine uses hardware x32 popcnt on i7--i5 and Phenom2.

This night I ran the first marathon match
1200 blitz 10" of 52dU (fully equivalent to 52dU
on my Core 2 Duo) with T52C. The result was:

1 Ivanhoe 52dU-x64 +10 +285/=574/-253 51.44% 572.0/1112
2 IvanHoe T52C x64 -10 +253/=574/-285 48.56% 540.0/1112

(88 "no move" bugs: 48 caused in 52dU, 40 -- in T52C).

http://rapidshare.com/files/412554873/IvanHoe52dU.7z