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Just a note about overclocking. I finally got a 4.4GHz overclock (3.2GHz is stock) stable across all apps and stress test. The nice thing is that it was done with a lower cpu voltage because I finally got the vitt frequency correct. Because of the lower cpu voltage it runs cooler than before. SF run...

When I had first written qperft (I was using a Pentium M at the time), I tried to speed it up by using assembler. To not waste time on non-time-ritical code, I started with the assembler output of the C compiler, and 'hand-optimized' the code of the time-critical loops. It turned out I could delete...

thought I would reply out of interest. On my 2 year old MacBook, 2.2ghz i7 circa 2017 I see this number for perf 6 from start position: White(1): perft 6 total moves=119060324 time=3.11 White(1): Here's the next one: White(1): perft 7 total moves=3195901860 time=82.65 My perft was never optimized f...

Finally, again public! https://github.com/amchess/BrainLearn This is an article explaining our idea: https://github.com/amchess/BrainLearn/blob/master/doc/MASTERING%20THE%20GAME%20OF%20CHESS%20THROUGH%20A%20RE.pdf Have fun! Kelly and Andrea Forgive me, but it seems all you've done is add a "permane...

On my 6950X at 4GHz. I get on average 52 mnps without bulk counting and including updating/downdating hash, pawn-hash, material-hash, material-score and phase. The latest processors from Intel have a 15 to 20% higher IPC and a somewhat higher clock-frequency, so my guess is that I would get between...

On my 6950X at 4GHz. I get on average 52 mnps without bulk counting and including updating/downdating hash, pawn-hash, material-hash, material-score and phase. The latest processors from Intel have a 15 to 20% higher IPC and a somewhat higher clock-frequency, so my guess is that I would get between...

For those that might be interested in the difference in speed of the pure C version and the assembler version these are the numbers on a 3930k at stock 3.2 GHz. Bench 6 Pure C, 33 879 522 moves per second Bench code in C, move gen and MakeMove in assembler. 65 608 247 moves per second I don't believ...

On an i7- 3930k overclocked to 4.4 GHz using only one thread in the opening position the assembler version generates 75 million positions per second. That includes all moves made and unmade and no hash counting. On an i9-9900k overclocked to 5GHz it would do double that. Why would going from 4.4 GH...

My new chess engine has no evaluation function and therefore move generation speed becomes more important. Not having an evaluation function? So it just generates moves, searches through trees, and then doesn't evaluate them? Did you actually benchmark how much time the move generation takes? I don...