Author: Dann Corbit
Date: 16:47:30 09/16/05
Go up one level in this thread
On September 16, 2005 at 17:49:05, Albert Silver wrote: >On September 16, 2005 at 14:14:34, Dann Corbit wrote: > >>On September 16, 2005 at 12:52:13, Êèðèëë Îñåëåäåö wrote: >> >>>Hi, I am curious how much stronger a faster computer will be for the same >>>program. Is there any formula for a program rating change depending on the >>>system? >> >>A rough rule of thumb is 50-70 Elo for each doubling of CPU speed. >> >>But there is a lot of debate as to how well the rule holds, especially at >>extreme depths. >> >>So you would really have to carefully test to know the answer. > >I would have guessed less than that based on both the SSDF and the results on >diminishing returns. Right now I am guessing that 1 extra ply brings about >roughly 50-60 elo, if that much, and that it takes about 2.5x speed to achieve >that, if one presumes a branching factor of 2.5. From the SSDF, this is data where the program was the same and the hardware was different: Chess Genius 1.0 486/33 MHz 2140 32 -32 483 50% 2143 Chess Genius 1.0 486/50-66 MHz 2184 23 -22 971 55% 2148 speed = x2.0, Elo + 44 Chess Tiger 14.0 CB 128MB K6-2 450 MHz 2636 23 -23 905 55% 2604 Chess Tiger 14.0 CB 256MB Athlon 1200 2718 29 -28 597 60% 2648 speed = 2.67x, Elo + 82 Chess Tiger 15.0 128MB K6-2 450 MHz 2665 29 -30 557 48% 2681 Chess Tiger 15.0 256MB Athlon 1200 MHz 2717 21 -21 1129 57% 2669 speed = 2.67x, Elo + 52 Conchess Glasgow 6502 2 MHz 1567 24 -25 855 34% 1682 Conchess Glasgow 6502 4 MHz 1620 39 -39 327 50% 1622 speed = x2.0, Elo + 53 Conchess Plymate 6502 4 MHz 1680 39 -38 333 55% 1648 Conchess Plymate 6502 5.5 MHz 1708 15 -16 2040 40% 1781 speed = 1.375x, Elo + 28 Crafty 18.12/CB 128MB K6-2 450 MHz 2489 27 -28 733 29% 2646 Crafty 18.12/CB 256MB Athlon 1200 MHz 2617 24 -24 864 46% 2646 speed = 2.67x, Elo + 128 Deep Fritz 7.0 128MB K6-2 450 MHz 2660 27 -27 684 49% 2665 Deep Fritz 7.0 256MB Athlon 1200 MHz 2764 24 -23 938 65% 2654 speed = 2.67x, Elo + 104 Fritz 3.0 486/50-66 MHz 2160 20 -20 1246 46% 2191 Fritz 3.0 Pentium 90 MHz 2242 18 -18 1458 42% 2302 Speed = 1.364x, Elo + 82 Fritz 5.32 128MB K6-2 450 MHz 2555 20 -20 1194 48% 2572 Fritz 5.32 64MB P200 MMX 2495 14 -14 2611 42% 2554 Speed = 2.25x, Elo + 60 Fritz 7.0 128MB K6-2 450 MHz 2632 38 -37 348 53% 2609 Fritz 7.0 256MB Athlon 1200 MHz 2739 28 -27 674 61% 2660 speed = 2.67x, Elo + 107 Gambit Tiger 2.0 128MB K6-2 450 MHz 2650 26 -25 754 62% 2562 Gambit Tiger 2.0 256MB Athlon 1200 2713 29 -29 583 58% 2654 speed = 2.67x, Elo + 63 Gandalf 4.32h 128MB K6-2 450 MHz 2524 34 -34 418 52% 2509 Gandalf 4.32h 256MB Athlon 1200 MHz 2660 28 -28 604 52% 2649 speed = 2.67x, Elo + 136 Gandalf 5.0 128MB K6-2 450 MHz 2543 73 -68 102 60% 2469 Gandalf 5.0 256MB Athlon 1200 MHz 2651 36 -37 364 45% 2689 speed = 2.67x, Elo + 108 Genius 3.0 486/50-66 MHz 2256 24 -23 910 62% 2169 Genius 3.0 Pentium 90 MHz 2310 25 -25 805 61% 2228 Speed = 1.364x, Elo + 54 Genius 4.0 DOS 486/50-66 MHz 2267 23 -23 900 49% 2271 Genius 4.0 DOS Pentium 90 MHz 2304 23 -23 944 60% 2235 Speed = 1.364x, Elo + 37 Genius 5.0 DOS 46MB P200 MMX 2393 20 -20 1197 49% 2397 Genius 5.0 DOS Pentium 90 MHz 2331 18 -18 1558 47% 2350 Speed = 2.22x, Elo + 62 Hiarcs 3.0 486/50-66 MHz 2197 24 -24 865 50% 2194 Hiarcs 3.0 Pentium 90 MHz 2274 30 -30 545 56% 2229 Speed = 1.364x, Elo + 77 Hiarcs 6.0 49MB P200 MMX 2421 24 -24 829 56% 2376 Hiarcs 6.0 Pentium 90 MHz 2335 18 -18 1437 51% 2331 Speed = 2.22x, Elo + 86 Hiarcs 7.32 128MB K6-2 450 MHz 2529 18 -18 1536 40% 2598 Hiarcs 7.32 64MB P200 MMX 2472 21 -21 1134 52% 2459 Speed = 2.25x, Elo + 57 Hiarcs 8.0 128MB K6-2 450 MHz 2587 33 -34 440 42% 2647 Hiarcs 8.0 256MB Athlon 1200 MHz 2680 21 -21 1116 51% 2673 speed = 2.67x, Elo + 93 Junior 5.0 128MB K6-2 450 MHz 2539 21 -21 1088 50% 2537 Junior 5.0 64MB P200 MMX 2434 18 -18 1458 45% 2473 Speed = 2.25x, Elo + 105 Junior 7.0 128MB K6-2 450 MHz 2631 21 -20 1160 56% 2590 Junior 7.0 256MB Athlon 1200 MHz 2700 23 -22 961 53% 2679 speed = 2.67x, Elo + 69 MChess Pro 3.12 486/33 MHz 2126 50 -48 208 60% 2052 MChess Pro 3.12 486/50-66 MHz 2165 36 -34 438 69% 2023 speed = 2.0x, Elo + 39 MChess Pro 4.0 486/50-66 MHz 2210 24 -24 846 53% 2186 MChess Pro 4.0 Pentium 90 MHz 2256 29 -29 578 52% 2240 speed = 1.36x, Elo + 46 MChess Pro 5.0 486/50-66 MHz 2228 26 -26 691 50% 2231 MChess Pro 5.0 Pentium 90 MHz 2307 26 -25 769 63% 2215 speed = 1.36x, Elo + 79 MChess Pro 6.0 41MB P200 MMX 2408 24 -24 831 52% 2396 MChess Pro 6.0 Pentium 90 MHz 2312 17 -17 1726 45% 2346 Speed = 2.22x, Elo + 96 MChess Pro 8.0 128MB K6-2 450 MHz 2479 25 -26 753 40% 2549 MChess Pro 8.0 64MB P200 MMX 2396 26 -26 701 54% 2365 Speed = 2.25x, Elo + 83 Nimzo 99 128MB K6-2 450 MHz 2486 22 -22 996 44% 2528 Nimzo 99 64MB P200 MMX 2450 23 -23 885 51% 2442 Speed = 2.25x, Elo + 36 Novag Constellation 6502 2 MHz 1497 32 -33 479 35% 1606 Novag Constellation 6502 3.6 MHz 1548 31 -32 504 41% 1615 Speed = 1.8, Elo + 51 Rebel 6.0 486/50-66 MHz 2197 24 -23 887 55% 2163 Rebel 6.0 Pentium 90 MHz 2307 31 -30 540 60% 2236 speed = 1.36x, Elo + 110 Rebel 7.0 486/50-66 MHz 2227 25 -25 777 49% 2236 Rebel 7.0 Pentium 90 MHz 2302 26 -25 759 61% 2220 speed = 1.36x, Elo + 75 Rebel 8.0 51MB P200 MMX 2410 22 -22 1011 47% 2434 Rebel 8.0 Pentium 90 MHz 2339 18 -18 1435 55% 2304 speed = 2.22x, Elo + 71 Rebel 9.0 47MB P200 MMX 2423 24 -23 920 61% 2341 Rebel 9.0 Pentium 90 MHz 2338 23 -23 890 47% 2359 speed = 2.22x, Elo + 85 Rebel Century 4.0 128MB K6-2 450 MHz 2567 52 -53 178 46% 2593 Rebel Century 4.0 256MB Athlon 1200 MHz 2673 29 -29 590 60% 2602 speed = 2.67x, Elo + 106 Rex Chess 2.3 386/16-20 MHz 1830 53 -53 174 49% 1836 Rex Chess 2.3 386/25-33 MHz 1930 65 -62 126 59% 1864 speed = 1.65x, Elo + 100 Shredder 5.32 128MB K6-2 450 MHz 2603 24 -23 879 52% 2590 Shredder 5.32 256MB Athlon 1200 MHz 2660 26 -26 739 50% 2657 speed = 2.67x, Elo + 57 Shredder 6.0 256MB Athlon 1200 MHz 2714 29 -29 587 60% 2644 Shredder 6.0 Pad UCI 256MB Athlon 1200 2721 22 -22 1033 62% 2638 No speed difference [same version different API], Elo difference +/- 7 Shredder 6.0 UCI 128MB K6-2 450 MHz 2617 43 -43 264 52% 2606 speed = 2.67x, Elo + 97 and + 104 Shredder 7.0 256MB Athlon 1200 MHz 2765 26 -25 841 69% 2629 Shredder 7.0 UCI 128MB K6-2 450 MHz 2697 32 -32 473 53% 2679 speed = 2.67x, Elo + 97 and + 68
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