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Using a Core 2 Duo

Posted By: Chuck Bower
Date: Monday, 1 September 2008, at 8:22 p.m.

In Response To: Using a Core 2 Duo (Jason Lee)

I'm certainly old-fashioned in many ways. I still run GNU-bg 0.14. I open two instances of GNU-bg which defaults to one running on each processor. I can run two different positions, or the same position (but half the candidates on one processor and half on the other). When I do this I make sure that the seed on both instances is the same.

When the first 0.16 came out I did some ROLLOUT benchmarking and found that 0.14 was ~10% faster than 0.16. I'm pretty sure the engines themselves are very similar. But I haven't b'm'ed the latest 0.16 so I can't say if that speed advantage still exists.

I'd be happy to hear from others that my old fashioned method is hurting me, but until then I'm sticking with it.

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