Stockfish 180813 x64 4CPU tournament (cancelled)

[Ray]

Round robin tournament:

Stockfish 180813 x64 4CPU
Houdini 3 x64 4CPU
Deep Rybka 4.1 960 x64 4CPU
Critter 1.6a x64 4CPU

AMD Phenom II X6
ChessGUI
1024mb hash each
3-4-5 piece tablebases
Ponder off
Time control: Game in 4 mins plus 2 seconds per move
All engines 64-bit 4CPU
Random chess960 opening positions, played as white and black per engine

[Ray]

I have to abort this tournament. ChessGUI is not sending the threads parameters correctly to the engines. I will start this again under Shredder GUI which is bullet-proof, and cancel this one.

[Ray]

Same thing under Shredder GUI. The engine config file reads

[ENGINE]
Name=Houdini 3 x64 4CPU
Author=Robert Houdart
Filename=C:\Program Files\Houdini 3 Chess\Houdini_3_Standard_x64.exe
[OPTIONS]
Threads=4
GaviotaTbPath=C:\gtb

Yet Houdini is using only 3 cores Bizarre. So I was wrong in blaming ChessGUI for this, it seems it is Houdini. Maybe I'll try the Pro exe. Come to think if it, I've had this problem with Houdini before. It certainly explains Houdini's sub-par performance in the 48 games that I did play.

[Ray]

The Houdini Pro exe is the same. I give up on it. An incompatibility with AMD perhaps.

[Adam Hair]

The Houdini Pro exe is the same. I give up on it. An incompatibility with AMD perhaps.

Maybe it is an incompatibility. It is using 4 cores for me (Xeon cpus).

[Charles Smith]

Using 4 cores for me FX-8150 AMD 8 core.

[Ray]

Thanks. Mine is the Phenom II X6.

[Ray]

Well I see Stockfish 4 is out now.