Updated user guide performance table.
Manually re-ran any score with a high error so that score/error < 0.03.
Updated the table to use the mean of 10 runs not the median.
Checked scores using a correlation of nextFloat vs nextInt and
nextDouble vs nextLong should be close to 1. Manually re-ran outliers to
verify the timing results.
Fixed outlier MSWS. It should be the fastest int generator (results
already stated it is the fastest float generator).
The PCG RR variants are verified outliers (slower then expected) for
nextFloat generation.
Final table:
double vs long R^2 = 0.9934
float vs int R^2 = 0.9831
diff --git a/src/site/apt/userguide/rng.apt b/src/site/apt/userguide/rng.apt
index 62c18ce..8a94456 100644
--- a/src/site/apt/userguide/rng.apt
+++ b/src/site/apt/userguide/rng.apt
@@ -561,77 +561,77 @@
*-----------------------*---------*---------*---------*---------*---------*
|| RNG identifier || <<<boolean>>> || <<<double>>> || <<<long>>> || <<<float>>> || <<<int>>> |
*-----------------------+---------:---------:---------:---------:---------:
-| JDK | 1 | 1 | 1 | 1 | 1 |
+| JDK | 1.00000 | 1.00000 | 1.00000 | 1.00000 | 1.00000 |
*-----------------------+---------:---------:---------:---------:---------:
-| WELL_512_A | 1.22655 | 0.65071 | 0.62194 | 0.93623 | 0.78108 |
+| WELL_512_A | 1.22756 | 0.64774 | 0.62119 | 0.93622 | 0.77620 |
*-----------------------+---------:---------:---------:---------:---------:
-| WELL_1024_A | 1.39152 | 0.65642 | 0.61325 | 0.94264 | 0.75083 |
+| WELL_1024_A | 1.23448 | 0.64702 | 0.61258 | 0.91802 | 0.70279 |
*-----------------------+---------:---------:---------:---------:---------:
-| WELL_19937_A | 1.26758 | 0.95801 | 0.90653 | 1.16216 | 1.12007 |
+| WELL_19937_A | 1.26780 | 0.95420 | 0.90732 | 1.16158 | 1.11143 |
*-----------------------+---------:---------:---------:---------:---------:
-| WELL_19937_C | 1.63209 | 1.06124 | 0.93953 | 1.20843 | 1.12656 |
+| WELL_19937_C | 1.28621 | 1.05665 | 0.93851 | 1.20811 | 1.12241 |
*-----------------------+---------:---------:---------:---------:---------:
-| WELL_44497_A | 1.27947 | 1.05099 | 0.97995 | 1.17942 | 1.14505 |
+| WELL_44497_A | 1.28290 | 1.04643 | 0.97920 | 1.18315 | 1.13812 |
*-----------------------+---------:---------:---------:---------:---------:
-| WELL_44497_B | 1.29627 | 1.09318 | 1.03165 | 1.27612 | 1.20631 |
+| WELL_44497_B | 1.29803 | 1.08804 | 1.03050 | 1.27588 | 1.19919 |
*-----------------------+---------:---------:---------:---------:---------:
-| MT | 1.18432 | 0.50200 | 0.43068 | 0.68716 | 0.58454 |
+| MT | 1.18727 | 0.49954 | 0.43062 | 0.69037 | 0.58075 |
*-----------------------+---------:---------:---------:---------:---------:
-| ISAAC | 0.98139 | 0.54663 | 0.49022 | 0.60317 | 0.51107 |
+| ISAAC | 0.98206 | 0.54405 | 0.48967 | 0.60378 | 0.50929 |
*-----------------------+---------:---------:---------:---------:---------:
-| SPLIT_MIX_64 | 1.14366 | 0.13497 | 0.09827 | 0.28296 | 0.19552 |
+| SPLIT_MIX_64 | 1.14541 | 0.13405 | 0.09897 | 0.28460 | 0.19431 |
*-----------------------+---------:---------:---------:---------:---------:
-| XOR_SHIFT_1024_S | 1.14959 | 0.18661 | 0.14464 | 0.34088 | 0.24819 |
+| XOR_SHIFT_1024_S | 1.15061 | 0.18243 | 0.14459 | 0.34174 | 0.25242 |
*-----------------------+---------:---------:---------:---------:---------:
-| TWO_CMRES | 1.16246 | 0.18330 | 0.15270 | 0.34889 | 0.33741 |
+| TWO_CMRES | 1.16284 | 0.18267 | 0.15281 | 0.34984 | 0.28657 |
*-----------------------+---------:---------:---------:---------:---------:
-| MT_64 | 1.17373 | 0.27447 | 0.23400 | 0.48126 | 0.36190 |
+| MT_64 | 1.17461 | 0.27294 | 0.23374 | 0.48280 | 0.35967 |
*-----------------------+---------:---------:---------:---------:---------:
-| MWC_256 | 1.15806 | 0.25385 | 0.21488 | 0.36679 | 0.25665 |
+| MWC_256 | 1.15759 | 0.25411 | 0.21631 | 0.36768 | 0.25554 |
*-----------------------+---------:---------:---------:---------:---------:
-| KISS | 1.17711 | 0.41357 | 0.41569 | 0.54175 | 0.42867 |
+| KISS | 1.17760 | 0.41165 | 0.41526 | 0.54227 | 0.42641 |
*-----------------------+---------:---------:---------:---------:---------:
-| XOR_SHIFT_1024_S_PHI | 1.16777 | 0.18515 | 0.14398 | 0.34273 | 0.24949 |
+| XOR_SHIFT_1024_S_PHI | 1.16893 | 0.18236 | 0.14382 | 0.34424 | 0.24821 |
*-----------------------+---------:---------:---------:---------:---------:
-| XO_RO_SHI_RO_64_S | 1.16587 | 0.18998 | 0.13528 | 0.24388 | 0.18467 |
+| XO_RO_SHI_RO_64_S | 1.16685 | 0.18914 | 0.13536 | 0.24512 | 0.18364 |
*-----------------------+---------:---------:---------:---------:---------:
-| XO_RO_SHI_RO_64_SS | 1.17344 | 0.24622 | 0.17832 | 0.29342 | 0.20841 |
+| XO_RO_SHI_RO_64_SS | 1.15470 | 0.24486 | 0.17811 | 0.29518 | 0.20803 |
*-----------------------+---------:---------:---------:---------:---------:
-| XO_SHI_RO_128_PLUS | 1.14797 | 0.26314 | 0.18365 | 0.32612 | 0.25379 |
+| XO_SHI_RO_128_PLUS | 1.15176 | 0.26227 | 0.18374 | 0.32524 | 0.25558 |
*-----------------------+---------:---------:---------:---------:---------:
-| XO_SHI_RO_128_SS | 1.15925 | 0.32620 | 0.25970 | 0.58654 | 0.28701 |
+| XO_SHI_RO_128_SS | 1.15975 | 0.32451 | 0.25989 | 0.40865 | 0.28614 |
*-----------------------+---------:---------:---------:---------:---------:
-| XO_RO_SHI_RO_128_PLUS | 1.15165 | 0.10623 | 0.08201 | 0.25829 | 0.17334 |
+| XO_RO_SHI_RO_128_PLUS | 1.16683 | 0.10546 | 0.08192 | 0.25955 | 0.17326 |
*-----------------------+---------:---------:---------:---------:---------:
-| XO_RO_SHI_RO_128_SS | 1.15669 | 0.13465 | 0.10156 | 0.27627 | 0.20088 |
+| XO_RO_SHI_RO_128_SS | 1.15738 | 0.13400 | 0.10186 | 0.27885 | 0.19879 |
*-----------------------+---------:---------:---------:---------:---------:
-| XO_SHI_RO_256_PLUS | 1.14012 | 0.13972 | 0.11090 | 0.29441 | 0.21667 |
+| XO_SHI_RO_256_PLUS | 1.14354 | 0.14036 | 0.11078 | 0.29566 | 0.21558 |
*-----------------------+---------:---------:---------:---------:---------:
-| XO_SHI_RO_256_SS | 1.14601 | 0.17540 | 0.12801 | 0.32067 | 0.23569 |
+| XO_SHI_RO_256_SS | 1.14810 | 0.17469 | 0.12788 | 0.32338 | 0.23577 |
*-----------------------+---------:---------:---------:---------:---------:
-| XO_SHI_RO_512_PLUS | 1.17019 | 0.25455 | 0.19365 | 0.40153 | 0.34492 |
+| XO_SHI_RO_512_PLUS | 1.16148 | 0.25360 | 0.19347 | 0.40327 | 0.34086 |
*-----------------------+---------:---------:---------:---------:---------:
-| XO_SHI_RO_512_SS | 1.16127 | 0.27050 | 0.21896 | 0.41566 | 0.35364 |
+| XO_SHI_RO_512_SS | 1.16359 | 0.27005 | 0.21910 | 0.41828 | 0.35155 |
*-----------------------+---------:---------:---------:---------:---------:
-| PCG_XSH_RR_32 | 0.94110 | 0.30309 | 0.26161 | 0.39280 | 0.19952 |
+| PCG_XSH_RR_32 | 0.94365 | 0.30150 | 0.26162 | 0.39426 | 0.19832 |
*-----------------------+---------:---------:---------:---------:---------:
-| PCG_XSH_RS_32 | 0.94289 | 0.24067 | 0.18844 | 0.29202 | 0.20038 |
+| PCG_XSH_RS_32 | 0.94766 | 0.23958 | 0.18884 | 0.29117 | 0.20081 |
*-----------------------+---------:---------:---------:---------:---------:
-| PCG_RXS_M_XS_64 | 1.14866 | 0.13325 | 0.11365 | 0.29439 | 0.20838 |
+| PCG_RXS_M_XS_64 | 1.15168 | 0.13238 | 0.11352 | 0.29651 | 0.20707 |
*-----------------------+---------:---------:---------:---------:---------:
-| PCG_MCG_XSH_RR_32 | 0.94086 | 0.29029 | 0.28379 | 0.36289 | 0.17871 |
+| PCG_MCG_XSH_RR_32 | 0.94123 | 0.28870 | 0.28352 | 0.36381 | 0.17816 |
*-----------------------+---------:---------:---------:---------:---------:
-| PCG_MCG_XSH_RS_32 | 0.93713 | 0.22664 | 0.17866 | 0.26299 | 0.16919 |
+| PCG_MCG_XSH_RS_32 | 0.93742 | 0.22574 | 0.17845 | 0.26411 | 0.16822 |
*-----------------------+---------:---------:---------:---------:---------:
-| MSWS | 1.12773 | 0.17979 | 0.15224 | 0.23583 | 0.19053 |
+| MSWS | 1.12821 | 0.17897 | 0.15428 | 0.23731 | 0.15224 |
*-----------------------+---------:---------:---------:---------:---------:
-| SFC_32 | 1.14919 | 0.28371 | 0.19399 | 0.32854 | 0.26122 |
+| SFC_32 | 1.15334 | 0.28210 | 0.19387 | 0.32224 | 0.26020 |
*-----------------------+---------:---------:---------:---------:---------:
-| SFC_64 | 1.13896 | 0.14117 | 0.26818 | 0.31351 | 0.23760 |
+| SFC_64 | 1.13927 | 0.14057 | 0.11686 | 0.31031 | 0.23761 |
*-----------------------+---------:---------:---------:---------:---------:
-| JSF_32 | 1.14369 | 0.24454 | 0.17016 | 0.29664 | 0.22666 |
+| JSF_32 | 1.14659 | 0.24439 | 0.17106 | 0.29932 | 0.22710 |
*-----------------------+---------:---------:---------:---------:---------:
-| JSF_64 | 1.13731 | 0.13444 | 0.10965 | 0.27864 | 0.21230 |
+| JSF_64 | 1.13970 | 0.13366 | 0.10999 | 0.28153 | 0.21406 |
*-----------------------+---------:---------:---------:---------:---------:
The <<<RandomSource.JDK>>> generator uses thread-safe (synchronized) <<<int>>> generation which has a performance overhead (see the <<<int>>> generation results). For the <<<boolean>>> generation the synchronization occurs 1 in 32 calls and the resulting performance is good. However the output will be low quality and this generator should not be used. See the {{{a5._Quality}Quality}} section for details.
