Commits on Feb 26, 2024

1. Set the reference nps for sf_16.1 wrt sf_11 …

   Fishtest with Stockfish 11 (official-stockfish#635) had 1.6 Mnps as reference core nps
   and 0.7 Mnps as threshold nps to stop a slow worker.
   Set the new reference core nps to 691680 nps according to the 56.77% slowdown
   of sf_16.1 wrt sf_11 on the ARCH=x86-64-bmi2 of the Ryzen 7 PRO 7840U.
   Set the new threshold for slow worker to 208082 nps according to the 70.27%
   slowdown of sf_16.1 wrt sf_11 on the ARCH=x86-64-sse41-popcnt of the
   Core i7 3770K.
   
   Stockfish compiled with clang++ 18.1.0
   Parallel speedup with bench at depth 13
   
   - ARCH=x86-64-bmi2 (AMD Ryzen 7 PRO 7840U)
   ```
   sf_base =  3451831 +/-   6037 (95%)
   sf_test =  1492232 +/-   3012 (95%)
   diff    = -1959598 +/-   4685 (95%)
   speedup = -56.770% +/- 0.136% (95%)
   ```
   - ARCH=x86-84-bmi2 (Intel Xeon E5-2680 v3)
   ```
   sf_base =  1918881 +/-   1002 (95%)
   sf_test =   649033 +/-    675 (95%)
   diff    = -1269847 +/-   1154 (95%)
   speedup = -66.176% +/- 0.060% (95%)
   ```
   - ARCH=x86-64-sse41-popcnt (Intel Core i7 3770K)
   ```
   sf_base =  2099079 +/-   9345 (95%)
   sf_test =   623973 +/-   2121 (95%)
   diff    = -1475105 +/-   7601 (95%)
   speedup = -70.274% +/- 0.362% (95%)
   ```
   
   Raise worker version to 230 (also server side)

   

   ppigazzini committed Feb 26, 2024
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