Zeta Open CL Chess - v0.918 - Developer Release

[smatovic]

Wait you use a bubble sort???

I also tried a buttom up heapsort, not much better.

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Srdja

[voyagerOne]

Right, even without move ordering I am still surprise at the low speed...

By the way, nice work! I am sure this was no easy task to program.

[smatovic]

Right, even without move ordering I am still surprise at the low speed...

Maybe i should switch to newer hardware....the GTS250 is based on the the 8800 from 2006....

By the way, nice work! I am sure this was no easy task to program.

thx, coding on such an architecture is definitely a new experience.

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Srdja

[voyagerOne]

Yes, I also suggest to test it on new hardware. Maybe you know somebody with a powerful GPU that you can test it on.

So I would go down this path...instead of optimizing move ordering since you know you will only get 100kns at best.

[smatovic]

changed the design from "One SIMD Unit One Board" to "One Thread One Board",

Source Nvidia
https://github.com/smatovic/Zeta/tree/zeta_nvidia_0920
Source AMD
https://github.com/smatovic/Zeta/tree/zeta_amd_0920

One thread makes now about 10 000 nps.

Next topic would be a load balancer for min 512 threads across 16 SIMD Units.

YBWC with its Master/Slave relations seems a bit sophisticated for OpenCL.

Maybe i will try a two tier system, stack based inside a simd unit and master/slave across simd units....

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Srdja