|
Thought I'd post what I'm doing, thought it may interest.
On a core i7, I'm running 1x (P-1), 2x DC, 1x "whatever makes sense" (LL) on mprime (OS=centos 5.4). I'm running only 1x P-1 now, as with running multiple P-1, mprime tends to crash when it allocates memory for p-1 workers (and also crashes other processes on the system). When running these workers, the per iteration times were: 1280K FFT 0.026 - 0.028sec (double checks) 2560K FFT 0.055 - 0.058sec (1st time LL) vs single-thread benchmarks of Best time for 1280K FFT length: 22.735 ms. Best time for 2560K FFT length: 50.253 ms. calculated max deviation from benchmark: 1280K FFT +23% (double checks) 2560K FFT +15% (1st time LL) [CODE]Benchmark results: (sorry without allbench) Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz CPU speed: 2698.72 MHz, 4 hyperthreaded cores CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2, SSE4 L1 cache size: 32 KB L2 cache size: 256 KB, L3 cache size: 8 MB L1 cache line size: 64 bytes L2 cache line size: 64 bytes TLBS: 64 Prime95 64-bit version 25.9, RdtscTiming=1 Best time for 768K FFT length: 13.283 ms. Best time for 896K FFT length: 15.978 ms. Best time for 1024K FFT length: 18.002 ms. Best time for 1280K FFT length: 22.735 ms. Best time for 1536K FFT length: 27.367 ms. Best time for 1792K FFT length: 33.123 ms. Best time for 2048K FFT length: 37.373 ms. Best time for 2560K FFT length: 50.253 ms. Best time for 3072K FFT length: 60.785 ms. Best time for 3584K FFT length: 73.949 ms. Best time for 4096K FFT length: 83.140 ms. Best time for 5120K FFT length: 106.840 ms. Best time for 6144K FFT length: 128.367 ms. Best time for 7168K FFT length: 157.444 ms. Best time for 8192K FFT length: 174.277 ms. Timing FFTs using 2 threads on 1 physical CPUs. Best time for 768K FFT length: 6.854 ms. Best time for 896K FFT length: 8.321 ms. Best time for 1024K FFT length: 9.536 ms. Best time for 1280K FFT length: 12.304 ms. Best time for 1536K FFT length: 14.421 ms. Best time for 1792K FFT length: 17.382 ms. Best time for 2048K FFT length: 19.568 ms. Best time for 2560K FFT length: 26.483 ms. Best time for 3072K FFT length: 32.049 ms. Best time for 3584K FFT length: 38.936 ms. Best time for 4096K FFT length: 43.483 ms. Best time for 5120K FFT length: 54.868 ms. Best time for 6144K FFT length: 69.501 ms. Best time for 7168K FFT length: 84.140 ms. Best time for 8192K FFT length: 93.298 ms. Timing FFTs using 4 threads on 2 physical CPUs. Best time for 768K FFT length: 5.193 ms. Best time for 896K FFT length: 5.792 ms. Best time for 1024K FFT length: 7.794 ms. Best time for 1280K FFT length: 7.030 ms. Best time for 1536K FFT length: 8.300 ms. Best time for 1792K FFT length: 9.602 ms. Best time for 2048K FFT length: 10.701 ms. Best time for 2560K FFT length: 13.710 ms. Best time for 3072K FFT length: 16.561 ms. Best time for 3584K FFT length: 20.141 ms. Best time for 4096K FFT length: 22.750 ms. Best time for 5120K FFT length: 29.443 ms. Best time for 6144K FFT length: 36.574 ms. Best time for 7168K FFT length: 47.786 ms. Best time for 8192K FFT length: 55.738 ms. Timing FFTs using 6 threads on 3 physical CPUs. Best time for 768K FFT length: 5.529 ms. Best time for 896K FFT length: 6.433 ms. Best time for 1024K FFT length: 8.555 ms. Best time for 1280K FFT length: 8.002 ms. Best time for 1536K FFT length: 9.493 ms. Best time for 1792K FFT length: 11.365 ms. Best time for 2048K FFT length: 12.655 ms. Best time for 2560K FFT length: 16.586 ms. Best time for 3072K FFT length: 19.688 ms. Best time for 3584K FFT length: 24.054 ms. Best time for 4096K FFT length: 26.921 ms. Best time for 5120K FFT length: 34.835 ms. Best time for 6144K FFT length: 44.022 ms. Best time for 7168K FFT length: 53.752 ms. Best time for 8192K FFT length: 61.169 ms. Timing FFTs using 8 threads on 4 physical CPUs. Best time for 768K FFT length: 10.087 ms. Best time for 896K FFT length: 6.371 ms. Best time for 1024K FFT length: 8.511 ms. Best time for 1280K FFT length: 7.650 ms. Best time for 1536K FFT length: 9.112 ms. Best time for 1792K FFT length: 10.463 ms. Best time for 2048K FFT length: 11.945 ms. Best time for 2560K FFT length: 15.027 ms. Best time for 3072K FFT length: 18.335 ms. Best time for 3584K FFT length: 22.365 ms. Best time for 4096K FFT length: 24.857 ms. Best time for 5120K FFT length: 33.219 ms. Best time for 6144K FFT length: 42.238 ms. Best time for 7168K FFT length: 53.811 ms. Best time for 8192K FFT length: 62.752 ms. Best time for 58 bit trial factors: 2.754 ms. Best time for 59 bit trial factors: 2.789 ms. Best time for 60 bit trial factors: 2.778 ms. Best time for 61 bit trial factors: 3.098 ms. Best time for 62 bit trial factors: 3.265 ms. Best time for 63 bit trial factors: 3.853 ms. Best time for 64 bit trial factors: 4.748 ms. Best time for 65 bit trial factors: 4.997 ms. Best time for 66 bit trial factors: 5.289 ms. Best time for 67 bit trial factors: 5.226 ms.[/CODE] |
AMD Athlon(tm) X4 620 Processor, stock & DDR2 800
[Tue Sep 29 04:13:13 2009]
Compare your results to other computers at [url]http://www.mersenne.org/report_benchmarks[/url] AMD Athlon(tm) X4 620 Processor CPU speed: 2611.93 MHz, 4 cores CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 48 L2 TLBS: 512 Prime95 32-bit version 25.9, RdtscTiming=1 Best time for 768K FFT length: 16.918 ms. Best time for 896K FFT length: 20.495 ms. Best time for 1024K FFT length: 23.270 ms. Best time for 1280K FFT length: 28.907 ms. Best time for 1536K FFT length: 34.670 ms. Best time for 1792K FFT length: 42.183 ms. Best time for 2048K FFT length: 47.853 ms. Best time for 2560K FFT length: 64.596 ms. Best time for 3072K FFT length: 79.318 ms. Best time for 3584K FFT length: 94.202 ms. Best time for 4096K FFT length: 106.892 ms. Best time for 5120K FFT length: 138.772 ms. Best time for 6144K FFT length: 168.662 ms. Best time for 7168K FFT length: 208.525 ms. Best time for 8192K FFT length: 244.765 ms. Timing FFTs using 2 threads. Best time for 768K FFT length: 12.545 ms. Best time for 896K FFT length: 15.480 ms. Best time for 1024K FFT length: 17.458 ms. Best time for 1280K FFT length: 21.682 ms. Best time for 1536K FFT length: 25.806 ms. Best time for 1792K FFT length: 30.653 ms. Best time for 2048K FFT length: 34.820 ms. Best time for 2560K FFT length: 49.045 ms. Best time for 3072K FFT length: 58.756 ms. Best time for 3584K FFT length: 70.077 ms. Best time for 4096K FFT length: 79.134 ms. Best time for 5120K FFT length: 91.990 ms. Best time for 6144K FFT length: 112.240 ms. Best time for 7168K FFT length: 140.142 ms. Best time for 8192K FFT length: 166.712 ms. Timing FFTs using 3 threads. Best time for 768K FFT length: 11.813 ms. Best time for 896K FFT length: 19.203 ms. Best time for 1024K FFT length: 20.841 ms. Best time for 1280K FFT length: 23.875 ms. Best time for 1536K FFT length: 27.441 ms. Best time for 1792K FFT length: 29.328 ms. Best time for 2048K FFT length: 32.046 ms. Best time for 2560K FFT length: 54.200 ms. Best time for 3072K FFT length: 61.936 ms. Best time for 3584K FFT length: 68.030 ms. Best time for 4096K FFT length: 74.687 ms. Best time for 5120K FFT length: 80.554 ms. Best time for 6144K FFT length: 97.646 ms. Best time for 7168K FFT length: 120.261 ms. Best time for 8192K FFT length: 141.373 ms. Timing FFTs using 4 threads. Best time for 768K FFT length: 12.632 ms. Best time for 896K FFT length: 18.849 ms. Best time for 1024K FFT length: 20.700 ms. Best time for 1280K FFT length: 24.256 ms. Best time for 1536K FFT length: 28.196 ms. Best time for 1792K FFT length: 32.320 ms. Best time for 2048K FFT length: 34.867 ms. Best time for 2560K FFT length: 58.198 ms. Best time for 3072K FFT length: 67.073 ms. Best time for 3584K FFT length: 75.033 ms. Best time for 4096K FFT length: 82.957 ms. Best time for 5120K FFT length: 82.498 ms. Best time for 6144K FFT length: 98.386 ms. Best time for 7168K FFT length: 119.463 ms. Best time for 8192K FFT length: 140.372 ms. Best time for 58 bit trial factors: 4.447 ms. Best time for 59 bit trial factors: 4.462 ms. Best time for 60 bit trial factors: 4.462 ms. Best time for 61 bit trial factors: 4.459 ms. Best time for 62 bit trial factors: 4.463 ms. Best time for 63 bit trial factors: 8.193 ms. Best time for 64 bit trial factors: 8.201 ms. Best time for 65 bit trial factors: 8.175 ms. Best time for 66 bit trial factors: 8.113 ms. Best time for 67 bit trial factors: 8.118 ms. |
New Computer Benchmark
No sooner said than done.
AMD Phenom II X4 955 stock speed 3.2 Ghz AM3 6MB 125 W Black Edition Gigabyte MA790GPT-UD3H 790GX AM3 ATX DDR3 4GB PC1333LV CL7 OCZ Kit 1333 Mhz Sp.(1024K)(1280K)(1536K)(1792K)(2048K)(2560K)(3072K)(3584K)(4096K) 3214 (18.09)(22.89)(27.36)(33.47)(37.88) (49.86) (59.66) (72.51)(82.00) A desire to AMD: Please develop next time a good cpu-fan, the standard cpu-fan is too loud and the processor is to hot. Thank you. |
[quote=moebius;195041]Details
AMD Phenom(tm) II X4 955 Processor CPU speed: 3214.04 MHz, 4 cores CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB, L3 cache size: 6 MB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 48 L2 TLBS: 512 Prime95 32-bit version 25.9, RdtscTiming=1 Best time for 768K FFT length: 13.106 ms. Best time for 896K FFT length: 15.955 ms. Best time for 1024K FFT length: 18.094 ms. Best time for 1280K FFT length: 22.891 ms. Best time for 1536K FFT length: 27.364 ms. Best time for 1792K FFT length: 33.475 ms. Best time for 2048K FFT length: 37.877 ms. Best time for 2560K FFT length: 49.859 ms. Best time for 3072K FFT length: 59.663 ms. Best time for 3584K FFT length: 72.506 ms. Best time for 4096K FFT length: 81.999 ms. Best time for 5120K FFT length: 108.119 ms. Best time for 6144K FFT length: 135.245 ms. Best time for 7168K FFT length: 166.800 ms. Best time for 8192K FFT length: 189.253 ms. Timing FFTs using 2 threads. Best time for 768K FFT length: 8.987 ms. Best time for 896K FFT length: 11.800 ms. Best time for 1024K FFT length: 14.229 ms. Best time for 1280K FFT length: 16.939 ms. Best time for 1536K FFT length: 20.428 ms. Best time for 1792K FFT length: 24.535 ms. Best time for 2048K FFT length: 28.087 ms. Best time for 2560K FFT length: 36.770 ms. Best time for 3072K FFT length: 43.947 ms. Best time for 3584K FFT length: 52.144 ms. Best time for 4096K FFT length: 58.756 ms. Best time for 5120K FFT length: 59.602 ms. Best time for 6144K FFT length: 72.159 ms. Best time for 7168K FFT length: 87.499 ms. Best time for 8192K FFT length: 98.535 ms. Timing FFTs using 3 threads. Best time for 768K FFT length: 6.688 ms. Best time for 896K FFT length: 7.716 ms. Best time for 1024K FFT length: 8.910 ms. Best time for 1280K FFT length: 14.926 ms. Best time for 1536K FFT length: 17.586 ms. Best time for 1792K FFT length: 20.750 ms. Best time for 2048K FFT length: 23.196 ms. Best time for 2560K FFT length: 31.937 ms. Best time for 3072K FFT length: 37.546 ms. Best time for 3584K FFT length: 43.241 ms. Best time for 4096K FFT length: 48.408 ms. Best time for 5120K FFT length: 41.453 ms. Best time for 6144K FFT length: 50.777 ms. Best time for 7168K FFT length: 60.934 ms. Best time for 8192K FFT length: 69.030 ms. Timing FFTs using 4 threads. Best time for 768K FFT length: 6.172 ms. Best time for 896K FFT length: 7.396 ms. Best time for 1024K FFT length: 8.532 ms. Best time for 1280K FFT length: 14.085 ms. Best time for 1536K FFT length: 16.848 ms. Best time for 1792K FFT length: 19.658 ms. Best time for 2048K FFT length: 21.802 ms. Best time for 2560K FFT length: 29.886 ms. Best time for 3072K FFT length: 35.772 ms. Best time for 3584K FFT length: 40.753 ms. Best time for 4096K FFT length: 45.818 ms. Best time for 5120K FFT length: 34.042 ms. Best time for 6144K FFT length: 40.836 ms. Best time for 7168K FFT length: 48.849 ms. Best time for 8192K FFT length: 54.819 ms. Best time for 58 bit trial factors: 3.612 ms. Best time for 59 bit trial factors: 3.626 ms. Best time for 60 bit trial factors: 3.626 ms. Best time for 61 bit trial factors: 3.612 ms. Best time for 62 bit trial factors: 3.627 ms. Best time for 63 bit trial factors: 6.656 ms. Best time for 64 bit trial factors: 6.661 ms. Best time for 65 bit trial factors: 6.646 ms. Best time for 66 bit trial factors: 6.594 ms. Best time for 67 bit trial factors: 6.598 ms. [Tue Nov 03 18:31:02 2009] |
[QUOTE=nucleon;187109]On a core i7, I'm running 1x (P-1), 2x DC, 1x "whatever makes sense" (LL) on mprime (OS=centos 5.4). I'm running only 1x P-1 now, as with running multiple P-1, mprime tends to crash when it allocates memory for p-1 workers (and also crashes other processes on the system).[/QUOTE]
How much memory have you given mprime? It shouldn't crash. Try telling it to only use 1/5 of your real memory. |
Phenom X4 955 BE @3.6 Ghz
AMD Phenom(tm) II X4 955 Processor
CPU speed: 3616.00 MHz, 4 cores CPU features: RDTSC, CMOV, Prefetch, 3DNow!, MMX, SSE, SSE2 L1 cache size: 64 KB L2 cache size: 512 KB, L3 cache size: 6 MB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 48 L2 TLBS: 512 Prime95 32-bit version 25.9, RdtscTiming=1 Best time for 768K FFT length: 11.699 ms. Best time for 896K FFT length: 14.233 ms. Best time for 1024K FFT length: 16.163 ms. Best time for 1280K FFT length: 20.475 ms. Best time for 1536K FFT length: 24.505 ms. Best time for 1792K FFT length: 30.001 ms. Best time for 2048K FFT length: 33.958 ms. Best time for 2560K FFT length: 44.735 ms. Best time for 3072K FFT length: 53.441 ms. Best time for 3584K FFT length: 64.947 ms. Best time for 4096K FFT length: 73.566 ms. Best time for 5120K FFT length: 97.125 ms. Best time for 6144K FFT length: 122.152 ms. Best time for 7168K FFT length: 151.038 ms. Best time for 8192K FFT length: 172.531 ms. Timing FFTs using 2 threads. Best time for 768K FFT length: 8.468 ms. Best time for 896K FFT length: 10.997 ms. Best time for 1024K FFT length: 13.325 ms. Best time for 1280K FFT length: 15.862 ms. Best time for 1536K FFT length: 19.257 ms. Best time for 1792K FFT length: 22.824 ms. Best time for 2048K FFT length: 26.030 ms. Best time for 2560K FFT length: 34.687 ms. Best time for 3072K FFT length: 41.220 ms. Best time for 3584K FFT length: 48.786 ms. Best time for 4096K FFT length: 54.699 ms. Best time for 5120K FFT length: 54.464 ms. Best time for 6144K FFT length: 66.127 ms. Best time for 7168K FFT length: 79.969 ms. Best time for 8192K FFT length: 90.241 ms. Timing FFTs using 3 threads. Best time for 768K FFT length: 6.321 ms. Best time for 896K FFT length: 7.336 ms. Best time for 1024K FFT length: 8.395 ms. Best time for 1280K FFT length: 14.364 ms. Best time for 1536K FFT length: 16.925 ms. Best time for 1792K FFT length: 19.806 ms. Best time for 2048K FFT length: 22.407 ms. Best time for 2560K FFT length: 30.807 ms. Best time for 3072K FFT length: 36.088 ms. Best time for 3584K FFT length: 41.646 ms. Best time for 4096K FFT length: 46.496 ms. Best time for 5120K FFT length: 38.431 ms. Best time for 6144K FFT length: 46.875 ms. Best time for 7168K FFT length: 56.333 ms. Best time for 8192K FFT length: 63.816 ms. Timing FFTs using 4 threads. Best time for 768K FFT length: 5.813 ms. Best time for 896K FFT length: 7.073 ms. Best time for 1024K FFT length: 8.070 ms. Best time for 1280K FFT length: 13.518 ms. Best time for 1536K FFT length: 16.056 ms. Best time for 1792K FFT length: 19.021 ms. Best time for 2048K FFT length: 21.272 ms. Best time for 2560K FFT length: 29.128 ms. Best time for 3072K FFT length: 34.316 ms. Best time for 3584K FFT length: 39.276 ms. Best time for 4096K FFT length: 43.892 ms. Best time for 5120K FFT length: 32.375 ms. Best time for 6144K FFT length: 38.699 ms. Best time for 7168K FFT length: 46.024 ms. Best time for 8192K FFT length: 51.565 ms. Best time for 58 bit trial factors: 3.211 ms. Best time for 59 bit trial factors: 3.214 ms. Best time for 60 bit trial factors: 3.234 ms. Best time for 61 bit trial factors: 3.218 ms. Best time for 62 bit trial factors: 3.224 ms. Best time for 63 bit trial factors: 5.929 ms. Best time for 64 bit trial factors: 5.921 ms. Best time for 65 bit trial factors: 5.907 ms. Best time for 66 bit trial factors: 5.862 ms. Best time for 67 bit trial factors: 5.876 ms. |
Suggestion
As we have been made aware by many benchmarks already posted in this forum, Prime 95 doesn´t scale very well as the number of threads per test goes up. That´s an established fact.
Now what would be interesting to post, in my opinion, is the per iteration times when the number of [U]worker windows[/U] (each one single threaded) goes up. That gives a good indication of whether we should use a given multi core CPU just for LL work (one test per core). If the iteration times are getting real worse with more workers running, it is then probably better to switch on or two cores to TF, for example. As far as I could see, this type of benchmark hasn´t been posted much. I therefore suggest that we start posting this type of data, particularly for quad cores. |
Core i5-750
At stock with memory running at 1333/CL9
[CODE]Intel(R) Core(TM) i5 CPU 750 @ 2.67GHz CPU speed: 2664.86 MHz, 4 cores CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2, SSE4 L1 cache size: 32 KB L2 cache size: 256 KB, L3 cache size: 8 MB L1 cache line size: 64 bytes L2 cache line size: 64 bytes TLBS: 64 Prime95 32-bit version 25.11, RdtscTiming=1 Best time for 768K FFT length: 14.15 ms. Best time for 896K FFT length: 17.28 ms. Best time for 1024K FFT length: 19.61 ms. Best time for 1280K FFT length: 24.53 ms. Best time for 1536K FFT length: 29.38 ms. Best time for 1792K FFT length: 35.82 ms. Best time for 2048K FFT length: 40.49 ms. Best time for 2560K FFT length: 53.61 ms. Best time for 3072K FFT length: 64.92 ms. Best time for 3584K FFT length: 79.34 ms. Best time for 4096K FFT length: 89.47 ms. Best time for 5120K FFT length: 114.79 ms. Best time for 6144K FFT length: 136.35 ms. Best time for 7168K FFT length: 166.41 ms. Best time for 8192K FFT length: 186.84 ms. Timing FFTs using 2 threads. Best time for 768K FFT length: 7.47 ms. Best time for 896K FFT length: 9.03 ms. Best time for 1024K FFT length: 10.51 ms. Best time for 1280K FFT length: 12.83 ms. Best time for 1536K FFT length: 15.53 ms. Best time for 1792K FFT length: 18.86 ms. Best time for 2048K FFT length: 21.32 ms. Best time for 2560K FFT length: 27.90 ms. Best time for 3072K FFT length: 33.60 ms. Best time for 3584K FFT length: 40.83 ms. Best time for 4096K FFT length: 46.09 ms. Best time for 5120K FFT length: 59.06 ms. Best time for 6144K FFT length: 70.40 ms. Best time for 7168K FFT length: 85.81 ms. Best time for 8192K FFT length: 96.68 ms. Timing FFTs using 3 threads. Best time for 768K FFT length: 5.86 ms. Best time for 896K FFT length: 6.73 ms. Best time for 1024K FFT length: 8.83 ms. Best time for 1280K FFT length: 8.68 ms. Best time for 1536K FFT length: 10.36 ms. Best time for 1792K FFT length: 12.69 ms. Best time for 2048K FFT length: 14.29 ms. Best time for 2560K FFT length: 18.75 ms. Best time for 3072K FFT length: 22.73 ms. Best time for 3584K FFT length: 27.81 ms. Best time for 4096K FFT length: 31.50 ms. Best time for 5120K FFT length: 40.80 ms. Best time for 6144K FFT length: 51.13 ms. Best time for 7168K FFT length: 61.64 ms. Best time for 8192K FFT length: 70.36 ms. Timing FFTs using 4 threads. Best time for 768K FFT length: 5.22 ms. Best time for 896K FFT length: 5.89 ms. Best time for 1024K FFT length: 7.87 ms. Best time for 1280K FFT length: 7.16 ms. Best time for 1536K FFT length: 8.45 ms. Best time for 1792K FFT length: 9.71 ms. Best time for 2048K FFT length: 11.02 ms. Best time for 2560K FFT length: 14.34 ms. Best time for 3072K FFT length: 17.35 ms. Best time for 3584K FFT length: 21.09 ms. Best time for 4096K FFT length: 23.86 ms. Best time for 5120K FFT length: 30.74 ms. Best time for 6144K FFT length: 37.98 ms. Best time for 7168K FFT length: 47.99 ms. Best time for 8192K FFT length: 56.25 ms. Best time for 58 bit trial factors: 3.58 ms. Best time for 59 bit trial factors: 3.59 ms. Best time for 60 bit trial factors: 3.56 ms. Best time for 61 bit trial factors: 3.57 ms. Best time for 62 bit trial factors: 3.59 ms. Best time for 63 bit trial factors: 5.98 ms. Best time for 64 bit trial factors: 5.96 ms. Best time for 65 bit trial factors: 5.51 ms. Best time for 66 bit trial factors: 5.46 ms. Best time for 67 bit trial factors: 5.43 ms.[/CODE] And at 3666MHz with memory at 1464/CL9 [CODE]Intel(R) Core(TM) i5 CPU 750 @ 2.67GHz CPU speed: 3660.04 MHz, 4 cores CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2, SSE4 L1 cache size: 32 KB L2 cache size: 256 KB, L3 cache size: 8 MB L1 cache line size: 64 bytes L2 cache line size: 64 bytes TLBS: 64 Prime95 32-bit version 25.11, RdtscTiming=1 Best time for 768K FFT length: 10.35 ms. Best time for 896K FFT length: 12.59 ms. Best time for 1024K FFT length: 14.33 ms. Best time for 1280K FFT length: 17.93 ms. Best time for 1536K FFT length: 21.39 ms. Best time for 1792K FFT length: 26.13 ms. Best time for 2048K FFT length: 29.56 ms. Best time for 2560K FFT length: 39.15 ms. Best time for 3072K FFT length: 47.41 ms. Best time for 3584K FFT length: 57.93 ms. Best time for 4096K FFT length: 65.52 ms. Best time for 5120K FFT length: 83.85 ms. Best time for 6144K FFT length: 99.84 ms. Best time for 7168K FFT length: 121.42 ms. Best time for 8192K FFT length: 136.35 ms. Timing FFTs using 2 threads. Best time for 768K FFT length: 5.44 ms. Best time for 896K FFT length: 6.57 ms. Best time for 1024K FFT length: 7.67 ms. Best time for 1280K FFT length: 9.36 ms. Best time for 1536K FFT length: 11.25 ms. Best time for 1792K FFT length: 13.68 ms. Best time for 2048K FFT length: 15.57 ms. Best time for 2560K FFT length: 20.30 ms. Best time for 3072K FFT length: 24.37 ms. Best time for 3584K FFT length: 29.75 ms. Best time for 4096K FFT length: 33.64 ms. Best time for 5120K FFT length: 43.27 ms. Best time for 6144K FFT length: 51.29 ms. Best time for 7168K FFT length: 62.47 ms. Best time for 8192K FFT length: 70.48 ms. Timing FFTs using 3 threads. Best time for 768K FFT length: 4.25 ms. Best time for 896K FFT length: 4.83 ms. Best time for 1024K FFT length: 6.47 ms. Best time for 1280K FFT length: 6.35 ms. Best time for 1536K FFT length: 7.58 ms. Best time for 1792K FFT length: 9.28 ms. Best time for 2048K FFT length: 10.45 ms. Best time for 2560K FFT length: 13.74 ms. Best time for 3072K FFT length: 16.62 ms. Best time for 3584K FFT length: 20.32 ms. Best time for 4096K FFT length: 23.01 ms. Best time for 5120K FFT length: 29.85 ms. Best time for 6144K FFT length: 35.38 ms. Best time for 7168K FFT length: 44.97 ms. Best time for 8192K FFT length: 51.61 ms. Timing FFTs using 4 threads. Best time for 768K FFT length: 3.79 ms. Best time for 896K FFT length: 4.31 ms. Best time for 1024K FFT length: 5.76 ms. Best time for 1280K FFT length: 5.23 ms. Best time for 1536K FFT length: 6.19 ms. Best time for 1792K FFT length: 7.11 ms. Best time for 2048K FFT length: 8.08 ms. Best time for 2560K FFT length: 10.46 ms. Best time for 3072K FFT length: 12.74 ms. Best time for 3584K FFT length: 15.56 ms. Best time for 4096K FFT length: 17.52 ms. Best time for 5120K FFT length: 22.60 ms. Best time for 6144K FFT length: 27.91 ms. Best time for 7168K FFT length: 35.09 ms. Best time for 8192K FFT length: 41.31 ms. Best time for 58 bit trial factors: 2.66 ms. Best time for 59 bit trial factors: 2.66 ms. Best time for 60 bit trial factors: 2.67 ms. Best time for 61 bit trial factors: 2.66 ms. Best time for 62 bit trial factors: 2.67 ms. Best time for 63 bit trial factors: 4.48 ms. Best time for 64 bit trial factors: 4.47 ms. Best time for 65 bit trial factors: 4.11 ms. Best time for 66 bit trial factors: 4.09 ms. Best time for 67 bit trial factors: 4.08 ms.[/CODE] |
[QUOTE=lycorn;196030]As we have been made aware by many benchmarks already posted in this forum, Prime 95 doesn´t scale very well as the number of threads per test goes up. That´s an established fact.[/QUOTE]Looking at Garo's benchmark that seems not to be true any more with Intel's i5 (and i7) architecture that seems to have the necessary memory bandwidth : the slowdown for 4 threads is less than 10 % for FFT sizes from 1792 KB to 5120 KB.
But I agree that benchmarks with 4 different tests in parallel would be very interesting and would probably suffer less from inter core communication bottlenecks. Jacob |
Core i7 @ 4.01GHz
[CODE]Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
CPU speed: 4000.57 MHz, 8 cores CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2, SSE4 L1 cache size: 32 KB L2 cache size: 256 KB, L3 cache size: 8 MB L1 cache line size: 64 bytes L2 cache line size: 64 bytes TLBS: 64 Prime95 64-bit version 25.11, RdtscTiming=1 Best time for 768K FFT length: 9.266 ms. Best time for 896K FFT length: 11.204 ms. Best time for 1024K FFT length: 12.638 ms. Best time for 1280K FFT length: 15.924 ms. Best time for 1536K FFT length: 19.222 ms. Best time for 1792K FFT length: 23.175 ms. Best time for 2048K FFT length: 26.320 ms. Best time for 2560K FFT length: 34.907 ms. Best time for 3072K FFT length: 42.681 ms. Best time for 3584K FFT length: 53.006 ms. Best time for 4096K FFT length: 60.267 ms. Best time for 5120K FFT length: 78.897 ms. Best time for 6144K FFT length: 95.181 ms. Best time for 7168K FFT length: 113.431 ms. Best time for 8192K FFT length: 126.381 ms. Timing FFTs using 2 threads. Best time for 768K FFT length: 9.518 ms. Best time for 896K FFT length: 11.626 ms. Best time for 1024K FFT length: 13.199 ms. Best time for 1280K FFT length: 16.694 ms. Best time for 1536K FFT length: 19.680 ms. Best time for 1792K FFT length: 24.364 ms. Best time for 2048K FFT length: 26.707 ms. Best time for 2560K FFT length: 36.093 ms. Best time for 3072K FFT length: 43.220 ms. Best time for 3584K FFT length: 53.049 ms. Best time for 4096K FFT length: 59.357 ms. Best time for 5120K FFT length: 76.321 ms. Best time for 6144K FFT length: 90.497 ms. Best time for 7168K FFT length: 110.513 ms. Best time for 8192K FFT length: 124.799 ms. Timing FFTs using 3 threads. Best time for 768K FFT length: 5.686 ms. Best time for 896K FFT length: 6.757 ms. Best time for 1024K FFT length: 8.336 ms. Best time for 1280K FFT length: 9.638 ms. Best time for 1536K FFT length: 11.501 ms. Best time for 1792K FFT length: 14.196 ms. Best time for 2048K FFT length: 15.756 ms. Best time for 2560K FFT length: 21.240 ms. Best time for 3072K FFT length: 25.777 ms. Best time for 3584K FFT length: 32.232 ms. Best time for 4096K FFT length: 35.000 ms. Best time for 5120K FFT length: 47.109 ms. Best time for 6144K FFT length: 55.998 ms. Best time for 7168K FFT length: 69.900 ms. Best time for 8192K FFT length: 75.467 ms. Timing FFTs using 4 threads. Best time for 768K FFT length: 5.499 ms. Best time for 896K FFT length: 6.288 ms. Best time for 1024K FFT length: 7.887 ms. Best time for 1280K FFT length: 8.578 ms. Best time for 1536K FFT length: 10.335 ms. Best time for 1792K FFT length: 12.518 ms. Best time for 2048K FFT length: 14.224 ms. Best time for 2560K FFT length: 18.826 ms. Best time for 3072K FFT length: 22.426 ms. Best time for 3584K FFT length: 27.961 ms. Best time for 4096K FFT length: 30.933 ms. Best time for 5120K FFT length: 39.876 ms. Best time for 6144K FFT length: 47.999 ms. Best time for 7168K FFT length: 57.854 ms. Best time for 8192K FFT length: 66.055 ms. Timing FFTs using 5 threads. Best time for 768K FFT length: 4.488 ms. Best time for 896K FFT length: 5.160 ms. Best time for 1024K FFT length: 6.623 ms. Best time for 1280K FFT length: 6.668 ms. Best time for 1536K FFT length: 8.123 ms. Best time for 1792K FFT length: 9.596 ms. Best time for 2048K FFT length: 10.578 ms. Best time for 2560K FFT length: 13.718 ms. Best time for 3072K FFT length: 18.062 ms. Best time for 3584K FFT length: 21.984 ms. Best time for 4096K FFT length: 24.084 ms. Best time for 5120K FFT length: 30.709 ms. Best time for 6144K FFT length: 38.574 ms. Best time for 7168K FFT length: 47.016 ms. Best time for 8192K FFT length: 51.522 ms. Timing FFTs using 6 threads. Best time for 768K FFT length: 4.656 ms. Best time for 896K FFT length: 5.373 ms. Best time for 1024K FFT length: 6.885 ms. Best time for 1280K FFT length: 7.006 ms. Best time for 1536K FFT length: 8.338 ms. Best time for 1792K FFT length: 9.744 ms. Best time for 2048K FFT length: 11.020 ms. Best time for 2560K FFT length: 14.579 ms. Best time for 3072K FFT length: 17.405 ms. Best time for 3584K FFT length: 19.175 ms. Best time for 4096K FFT length: 22.716 ms. Best time for 5120K FFT length: 29.786 ms. Best time for 6144K FFT length: 38.219 ms. Best time for 7168K FFT length: 43.411 ms. Best time for 8192K FFT length: 51.469 ms. Timing FFTs using 7 threads. Best time for 768K FFT length: 4.078 ms. Best time for 896K FFT length: 4.689 ms. Best time for 1024K FFT length: 6.161 ms. Best time for 1280K FFT length: 6.172 ms. Best time for 1536K FFT length: 7.292 ms. Best time for 1792K FFT length: 8.919 ms. Best time for 2048K FFT length: 10.716 ms. Best time for 2560K FFT length: 12.957 ms. Best time for 3072K FFT length: 17.096 ms. Best time for 3584K FFT length: 19.252 ms. Best time for 4096K FFT length: 22.945 ms. Best time for 5120K FFT length: 28.873 ms. Best time for 6144K FFT length: 35.850 ms. Best time for 7168K FFT length: 42.036 ms. Best time for 8192K FFT length: 50.448 ms. Timing FFTs using 8 threads. Best time for 768K FFT length: 4.302 ms. Best time for 896K FFT length: 5.028 ms. Best time for 1024K FFT length: 7.563 ms. Best time for 1280K FFT length: 6.492 ms. Best time for 1536K FFT length: 8.089 ms. Best time for 1792K FFT length: 9.137 ms. Best time for 2048K FFT length: 10.814 ms. Best time for 2560K FFT length: 14.614 ms. Best time for 3072K FFT length: 17.795 ms. Best time for 3584K FFT length: 18.635 ms. Best time for 4096K FFT length: 22.511 ms. Best time for 5120K FFT length: 27.932 ms. Best time for 6144K FFT length: 35.777 ms. Best time for 7168K FFT length: 45.743 ms. Best time for 8192K FFT length: 49.979 ms. Best time for 58 bit trial factors: 1.937 ms. Best time for 59 bit trial factors: 1.963 ms. Best time for 60 bit trial factors: 1.962 ms. Best time for 61 bit trial factors: 2.166 ms. Best time for 62 bit trial factors: 2.288 ms. Best time for 63 bit trial factors: 2.705 ms. Best time for 64 bit trial factors: 3.327 ms. Best time for 65 bit trial factors: 3.504 ms. Best time for 66 bit trial factors: 3.691 ms. Best time for 67 bit trial factors: 3.665 ms. [/CODE] |
Core i7 @ 4.01GHz
I improved the ventilation a bit around the CPU, now it made it through the test without downclocking:
[CODE]Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz CPU speed: 4000.24 MHz, 8 cores CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2, SSE4 L1 cache size: 32 KB L2 cache size: 256 KB, L3 cache size: 8 MB L1 cache line size: 64 bytes L2 cache line size: 64 bytes TLBS: 64 Prime95 64-bit version 25.11, RdtscTiming=1 Best time for 768K FFT length: 9.247 ms. Best time for 896K FFT length: 11.191 ms. Best time for 1024K FFT length: 12.608 ms. Best time for 1280K FFT length: 15.878 ms. Best time for 1536K FFT length: 19.166 ms. Best time for 1792K FFT length: 23.123 ms. Best time for 2048K FFT length: 26.119 ms. Best time for 2560K FFT length: 34.800 ms. Best time for 3072K FFT length: 42.541 ms. Best time for 3584K FFT length: 51.684 ms. Best time for 4096K FFT length: 58.141 ms. Best time for 5120K FFT length: 74.773 ms. Best time for 6144K FFT length: 88.944 ms. Best time for 7168K FFT length: 108.168 ms. Best time for 8192K FFT length: 121.921 ms. Timing FFTs using 2 threads. Best time for 768K FFT length: 9.478 ms. Best time for 896K FFT length: 11.564 ms. Best time for 1024K FFT length: 13.002 ms. Best time for 1280K FFT length: 16.511 ms. Best time for 1536K FFT length: 19.684 ms. Best time for 1792K FFT length: 24.132 ms. Best time for 2048K FFT length: 26.784 ms. Best time for 2560K FFT length: 35.635 ms. Best time for 3072K FFT length: 42.333 ms. Best time for 3584K FFT length: 51.944 ms. Best time for 4096K FFT length: 57.433 ms. Best time for 5120K FFT length: 74.338 ms. Best time for 6144K FFT length: 88.665 ms. Best time for 7168K FFT length: 107.472 ms. Best time for 8192K FFT length: 119.232 ms. Timing FFTs using 3 threads. Best time for 768K FFT length: 5.586 ms. Best time for 896K FFT length: 6.711 ms. Best time for 1024K FFT length: 8.235 ms. Best time for 1280K FFT length: 9.600 ms. Best time for 1536K FFT length: 11.387 ms. Best time for 1792K FFT length: 14.047 ms. Best time for 2048K FFT length: 15.440 ms. Best time for 2560K FFT length: 20.835 ms. Best time for 3072K FFT length: 24.836 ms. Best time for 3584K FFT length: 30.593 ms. Best time for 4096K FFT length: 33.869 ms. Best time for 5120K FFT length: 43.959 ms. Best time for 6144K FFT length: 52.436 ms. Best time for 7168K FFT length: 63.801 ms. Best time for 8192K FFT length: 70.626 ms. Timing FFTs using 4 threads. Best time for 768K FFT length: 5.472 ms. Best time for 896K FFT length: 6.303 ms. Best time for 1024K FFT length: 7.866 ms. Best time for 1280K FFT length: 8.577 ms. Best time for 1536K FFT length: 10.323 ms. Best time for 1792K FFT length: 12.427 ms. Best time for 2048K FFT length: 13.874 ms. Best time for 2560K FFT length: 18.216 ms. Best time for 3072K FFT length: 21.769 ms. Best time for 3584K FFT length: 26.342 ms. Best time for 4096K FFT length: 29.446 ms. Best time for 5120K FFT length: 37.931 ms. Best time for 6144K FFT length: 45.583 ms. Best time for 7168K FFT length: 55.053 ms. Best time for 8192K FFT length: 61.405 ms. Timing FFTs using 5 threads. Best time for 768K FFT length: 4.440 ms. Best time for 896K FFT length: 5.085 ms. Best time for 1024K FFT length: 6.593 ms. Best time for 1280K FFT length: 6.649 ms. Best time for 1536K FFT length: 7.895 ms. Best time for 1792K FFT length: 9.247 ms. Best time for 2048K FFT length: 10.365 ms. Best time for 2560K FFT length: 13.547 ms. Best time for 3072K FFT length: 16.214 ms. Best time for 3584K FFT length: 19.759 ms. Best time for 4096K FFT length: 22.091 ms. Best time for 5120K FFT length: 28.841 ms. Best time for 6144K FFT length: 35.322 ms. Best time for 7168K FFT length: 42.786 ms. Best time for 8192K FFT length: 47.855 ms. Timing FFTs using 6 threads. Best time for 768K FFT length: 4.596 ms. Best time for 896K FFT length: 5.310 ms. Best time for 1024K FFT length: 6.823 ms. Best time for 1280K FFT length: 6.919 ms. Best time for 1536K FFT length: 8.274 ms. Best time for 1792K FFT length: 9.625 ms. Best time for 2048K FFT length: 10.901 ms. Best time for 2560K FFT length: 13.528 ms. Best time for 3072K FFT length: 16.194 ms. Best time for 3584K FFT length: 18.895 ms. Best time for 4096K FFT length: 21.474 ms. Best time for 5120K FFT length: 26.673 ms. Best time for 6144K FFT length: 34.034 ms. Best time for 7168K FFT length: 40.747 ms. Best time for 8192K FFT length: 46.290 ms. Timing FFTs using 7 threads. Best time for 768K FFT length: 4.149 ms. Best time for 896K FFT length: 4.667 ms. Best time for 1024K FFT length: 6.053 ms. Best time for 1280K FFT length: 6.053 ms. Best time for 1536K FFT length: 7.231 ms. Best time for 1792K FFT length: 8.351 ms. Best time for 2048K FFT length: 9.558 ms. Best time for 2560K FFT length: 11.851 ms. Best time for 3072K FFT length: 14.100 ms. Best time for 3584K FFT length: 16.415 ms. Best time for 4096K FFT length: 18.702 ms. Best time for 5120K FFT length: 23.265 ms. Best time for 6144K FFT length: 29.802 ms. Best time for 7168K FFT length: 36.410 ms. Best time for 8192K FFT length: 41.644 ms. Timing FFTs using 8 threads. Best time for 768K FFT length: 4.225 ms. Best time for 896K FFT length: 4.860 ms. Best time for 1024K FFT length: 6.253 ms. Best time for 1280K FFT length: 6.313 ms. Best time for 1536K FFT length: 7.613 ms. Best time for 1792K FFT length: 8.712 ms. Best time for 2048K FFT length: 10.017 ms. Best time for 2560K FFT length: 12.383 ms. Best time for 3072K FFT length: 14.907 ms. Best time for 3584K FFT length: 17.200 ms. Best time for 4096K FFT length: 19.694 ms. Best time for 5120K FFT length: 24.571 ms. Best time for 6144K FFT length: 30.808 ms. Best time for 7168K FFT length: 37.385 ms. Best time for 8192K FFT length: 43.127 ms. Best time for 58 bit trial factors: 1.934 ms. Best time for 59 bit trial factors: 1.956 ms. Best time for 60 bit trial factors: 1.957 ms. Best time for 61 bit trial factors: 2.159 ms. Best time for 62 bit trial factors: 2.283 ms. Best time for 63 bit trial factors: 2.698 ms. Best time for 64 bit trial factors: 3.328 ms. Best time for 65 bit trial factors: 3.512 ms. Best time for 66 bit trial factors: 3.678 ms. Best time for 67 bit trial factors: 3.651 ms.[/CODE] |
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