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Old 2012-05-05, 11:50   #78
aketilander
 
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"Åke Tilander"
Apr 2011
Sandviken, Sweden

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Quote:
Originally Posted by Dubslow View Post
Uhhh.... George? About that 27.6 multithreading: As you can see by the timings, it appears that two threads is actually more efficient than one thread.
I think the answer is that when you are multithreading some of the cores on an OC system you need to take into account what the other cores are doing. Let say that you are multithreading 4 cores on a 6-core system. You will get quite different results if the last two cores are idel, doing TF or doinig LL. I think the reason for this is that the on-chip memory is limited in a way that your multithreading of 4 cores will be faster if the other two cores are idel or doing TF, but if they are doing LL the multithreading of the 4 cores will be slower. The more OC the larger is this influence I think. I am not sure if this is the answer to your question?
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Old 2012-08-22, 17:29   #79
joblack
 
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Oct 2008
n00bville

52·29 Posts
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2 x Intel(R) Xeon(R) CPU E5-2690 0 @ 2.90GHz
CenOS 6.3 - 64 Bit
98 GByte RAM
----------------------------------------------
[Worker #1 Aug 22 19:24] Worker starting
[Worker #1 Aug 22 19:24] Using AVX FFT length 19200K, Pass1=768, Pass2=25K
[Worker #1 Aug 22 19:24] p: 332220523. Time: 135.913 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 135.827 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 135.885 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 135.612 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 135.573 ms.
[Worker #1 Aug 22 19:24] Iterations: 5. Total time: 0.679 sec.
[Worker #1 Aug 22 19:24] Estimated time to complete this exponent: 522 days, 0 hours, 35 minutes.
[Worker #1 Aug 22 19:24] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 2 threads
[Worker #1 Aug 22 19:24] p: 332220523. Time: 140.405 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 140.687 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 144.142 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 139.759 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 140.860 ms.
[Worker #1 Aug 22 19:24] Iterations: 5. Total time: 0.706 sec.
[Worker #1 Aug 22 19:24] Estimated time to complete this exponent: 542 days, 19 hours, 42 minutes.
[Worker #1 Aug 22 19:24] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 3 threads
[Worker #1 Aug 22 19:24] p: 332220523. Time: 71.913 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 72.017 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 72.198 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 71.981 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 71.946 ms.
[Worker #1 Aug 22 19:24] Iterations: 5. Total time: 0.360 sec.
[Worker #1 Aug 22 19:24] Estimated time to complete this exponent: 276 days, 21 hours, 25 minutes.
[Worker #1 Aug 22 19:24] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 4 threads
[Worker #1 Aug 22 19:24] p: 332220523. Time: 73.163 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 74.715 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 74.464 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 73.536 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 73.224 ms.
[Worker #1 Aug 22 19:24] Iterations: 5. Total time: 0.369 sec.
[Worker #1 Aug 22 19:24] Estimated time to complete this exponent: 283 days, 20 hours, 24 minutes.
[Worker #1 Aug 22 19:24] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 5 threads
[Worker #1 Aug 22 19:24] p: 332220523. Time: 50.043 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 49.746 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 49.793 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 50.230 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 49.671 ms.
[Worker #1 Aug 22 19:24] Iterations: 5. Total time: 0.249 sec.
[Worker #1 Aug 22 19:24] Estimated time to complete this exponent: 191 days, 20 hours, 37 minutes.
[Worker #1 Aug 22 19:24] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 6 threads
[Worker #1 Aug 22 19:24] p: 332220523. Time: 50.338 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 50.776 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 50.330 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 50.431 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 50.164 ms.
[Worker #1 Aug 22 19:24] Iterations: 5. Total time: 0.252 sec.
[Worker #1 Aug 22 19:24] Estimated time to complete this exponent: 193 days, 19 hours, 48 minutes.
[Worker #1 Aug 22 19:24] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 7 threads
[Worker #1 Aug 22 19:24] p: 332220523. Time: 38.620 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 38.829 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 38.677 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 38.756 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 38.728 ms.
[Worker #1 Aug 22 19:24] Iterations: 5. Total time: 0.194 sec.
[Worker #1 Aug 22 19:24] Estimated time to complete this exponent: 148 days, 21 hours, 24 minutes.
[Worker #1 Aug 22 19:24] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 8 threads
[Worker #1 Aug 22 19:24] p: 332220523. Time: 38.830 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 39.294 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 39.179 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 39.103 ms.
[Worker #1 Aug 22 19:24] p: 332220523. Time: 38.824 ms.
[Worker #1 Aug 22 19:24] Iterations: 5. Total time: 0.195 sec.
[Worker #1 Aug 22 19:24] Estimated time to complete this exponent: 150 days, 3 hours, 18 minutes.
[Worker #1 Aug 22 19:24] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 9 threads
[Worker #1 Aug 22 19:25] p: 332220523. Time: 31.250 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 31.516 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 31.211 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 31.398 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 31.659 ms.
[Worker #1 Aug 22 19:25] Iterations: 5. Total time: 0.157 sec.
[Worker #1 Aug 22 19:25] Estimated time to complete this exponent: 120 days, 18 hours, 19 minutes.
[Worker #1 Aug 22 19:25] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 10 threads
[Worker #1 Aug 22 19:25] p: 332220523. Time: 31.652 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 31.487 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 31.512 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 31.611 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 31.799 ms.
[Worker #1 Aug 22 19:25] Iterations: 5. Total time: 0.158 sec.
[Worker #1 Aug 22 19:25] Estimated time to complete this exponent: 121 days, 13 hours, 17 minutes.
[Worker #1 Aug 22 19:25] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 11 threads
[Worker #1 Aug 22 19:25] p: 332220523. Time: 27.318 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 27.230 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 27.252 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 27.329 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 27.160 ms.
[Worker #1 Aug 22 19:25] Iterations: 5. Total time: 0.136 sec.
[Worker #1 Aug 22 19:25] Estimated time to complete this exponent: 104 days, 19 hours, 26 minutes.
[Worker #1 Aug 22 19:25] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 12 threads
[Worker #1 Aug 22 19:25] p: 332220523. Time: 27.311 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 27.330 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 27.379 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 27.317 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 27.279 ms.
[Worker #1 Aug 22 19:25] Iterations: 5. Total time: 0.137 sec.
[Worker #1 Aug 22 19:25] Estimated time to complete this exponent: 105 days, 1 hour, 28 minutes.
[Worker #1 Aug 22 19:25] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 13 threads
[Worker #1 Aug 22 19:25] p: 332220523. Time: 24.661 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 24.742 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 24.628 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 24.588 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 24.737 ms.
[Worker #1 Aug 22 19:25] Iterations: 5. Total time: 0.123 sec.
[Worker #1 Aug 22 19:25] Estimated time to complete this exponent: 94 days, 20 hours, 44 minutes.
[Worker #1 Aug 22 19:25] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 14 threads
[Worker #1 Aug 22 19:25] p: 332220523. Time: 24.855 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 24.772 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 24.600 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 24.689 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 24.712 ms.
[Worker #1 Aug 22 19:25] Iterations: 5. Total time: 0.124 sec.
[Worker #1 Aug 22 19:25] Estimated time to complete this exponent: 95 days, 1 hour, 45 minutes.
[Worker #1 Aug 22 19:25] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 15 threads
[Worker #1 Aug 22 19:25] p: 332220523. Time: 23.238 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 23.098 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 23.255 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 23.246 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 23.253 ms.
[Worker #1 Aug 22 19:25] Iterations: 5. Total time: 0.116 sec.
[Worker #1 Aug 22 19:25] Estimated time to complete this exponent: 89 days, 6 hours, 38 minutes.
[Worker #1 Aug 22 19:25] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 16 threads
[Worker #1 Aug 22 19:25] p: 332220523. Time: 23.217 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 23.207 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 23.248 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 23.373 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 23.192 ms.
[Worker #1 Aug 22 19:25] Iterations: 5. Total time: 0.116 sec.
[Worker #1 Aug 22 19:25] Estimated time to complete this exponent: 89 days, 9 hours, 21 minutes.
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Old 2012-08-22, 17:31   #80
joblack
 
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Oct 2008
n00bville

52×29 Posts
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Worker #1 Aug 22 19:25] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 17 threads
[Worker #1 Aug 22 19:25] p: 332220523. Time: 21.449 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 21.639 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 21.610 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 21.798 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 21.533 ms.
[Worker #1 Aug 22 19:25] Iterations: 5. Total time: 0.108 sec.
[Worker #1 Aug 22 19:25] Estimated time to complete this exponent: 83 days, 1 hour, 51 minutes.
[Worker #1 Aug 22 19:25] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 18 threads
[Worker #1 Aug 22 19:25] p: 332220523. Time: 21.656 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 22.154 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 22.063 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 21.724 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 22.118 ms.
[Worker #1 Aug 22 19:25] Iterations: 5. Total time: 0.110 sec.
[Worker #1 Aug 22 19:25] Estimated time to complete this exponent: 84 days, 8 hours, 58 minutes.
[Worker #1 Aug 22 19:25] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 19 threads
[Worker #1 Aug 22 19:25] p: 332220523. Time: 21.040 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 21.382 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 21.133 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 20.985 ms.
[Worker #1 Aug 22 19:25] p: 332220523. Time: 21.051 ms.
[Worker #1 Aug 22 19:25] Iterations: 5. Total time: 0.106 sec.
[Worker #1 Aug 22 19:25] Estimated time to complete this exponent: 81 days, 4 hours, 51 minutes.
[Worker #1 Aug 22 19:26] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 20 threads
[Worker #1 Aug 22 19:26] p: 332220523. Time: 21.240 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 21.540 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 21.038 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 21.081 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 21.072 ms.
[Worker #1 Aug 22 19:26] Iterations: 5. Total time: 0.106 sec.
[Worker #1 Aug 22 19:26] Estimated time to complete this exponent: 81 days, 11 hours, 52 minutes.
[Worker #1 Aug 22 19:26] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 21 threads
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.275 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.130 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.241 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.150 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.196 ms.
[Worker #1 Aug 22 19:26] Iterations: 5. Total time: 0.101 sec.
[Worker #1 Aug 22 19:26] Estimated time to complete this exponent: 77 days, 15 hours, 58 minutes.
[Worker #1 Aug 22 19:26] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 22 threads
[Worker #1 Aug 22 19:26] p: 332220523. Time: 21.050 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.385 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.365 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.202 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.224 ms.
[Worker #1 Aug 22 19:26] Iterations: 5. Total time: 0.102 sec.
[Worker #1 Aug 22 19:26] Estimated time to complete this exponent: 78 days, 14 hours, 45 minutes.
[Worker #1 Aug 22 19:26] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 23 threads
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.366 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.279 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.537 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.327 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.312 ms.
[Worker #1 Aug 22 19:26] Iterations: 5. Total time: 0.102 sec.
[Worker #1 Aug 22 19:26] Estimated time to complete this exponent: 78 days, 7 hours, 16 minutes.
[Worker #1 Aug 22 19:26] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 24 threads
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.155 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.483 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.224 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.384 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.433 ms.
[Worker #1 Aug 22 19:26] Iterations: 5. Total time: 0.102 sec.
[Worker #1 Aug 22 19:26] Estimated time to complete this exponent: 78 days, 4 hours, 39 minutes.
[Worker #1 Aug 22 19:26] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 25 threads
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.678 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.052 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.538 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.805 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.628 ms.
[Worker #1 Aug 22 19:26] Iterations: 5. Total time: 0.099 sec.
[Worker #1 Aug 22 19:26] Estimated time to complete this exponent: 75 days, 21 hours, 41 minutes.
[Worker #1 Aug 22 19:26] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 26 threads
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.746 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.727 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.950 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.695 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.728 ms.
[Worker #1 Aug 22 19:26] Iterations: 5. Total time: 0.099 sec.
[Worker #1 Aug 22 19:26] Estimated time to complete this exponent: 76 days, 0 hours, 22 minutes.
[Worker #1 Aug 22 19:26] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 27 threads
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.750 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.886 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.826 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.812 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.746 ms.
[Worker #1 Aug 22 19:26] Iterations: 5. Total time: 0.099 sec.
[Worker #1 Aug 22 19:26] Estimated time to complete this exponent: 76 days, 3 hours, 34 minutes.
[Worker #1 Aug 22 19:26] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 28 threads
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.949 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.244 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.949 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.961 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.773 ms.
[Worker #1 Aug 22 19:26] Iterations: 5. Total time: 0.100 sec.
[Worker #1 Aug 22 19:26] Estimated time to complete this exponent: 76 days, 19 hours, 22 minutes.
[Worker #1 Aug 22 19:26] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 29 threads
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.541 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.962 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 20.147 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.811 ms.
[Worker #1 Aug 22 19:26] p: 332220523. Time: 19.581 ms.
[Worker #1 Aug 22 19:26] Iterations: 5. Total time: 0.099 sec.
[Worker #1 Aug 22 19:26] Estimated time to complete this exponent: 76 days, 3 hours, 59 minutes.
[Worker #1 Aug 22 19:27] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 30 threads
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.974 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 20.325 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 20.000 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.751 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.711 ms.
[Worker #1 Aug 22 19:27] Iterations: 5. Total time: 0.100 sec.
[Worker #1 Aug 22 19:27] Estimated time to complete this exponent: 76 days, 17 hours, 15 minutes.
[Worker #1 Aug 22 19:27] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 31 threads
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.991 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.835 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.895 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.822 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.724 ms.
[Worker #1 Aug 22 19:27] Iterations: 5. Total time: 0.099 sec.
[Worker #1 Aug 22 19:27] Estimated time to complete this exponent: 76 days, 8 hours, 8 minutes.
[Worker #1 Aug 22 19:27] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 32 threads
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.811 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.926 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 20.863 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.992 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 20.501 ms.
[Worker #1 Aug 22 19:27] Iterations: 5. Total time: 0.101 sec.
[Worker #1 Aug 22 19:27] Estimated time to complete this exponent: 77 days, 17 hours, 50 minutes.
[Worker #1 Aug 22 19:27] Worker stopped.
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Old 2012-08-27, 17:06   #81
Antonio
 
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"Antonio Key"
Sep 2011
UK

32·59 Posts
Default

Just to offer a Core i5 Ivy Bridge result to the thread

Code:
Intel 3570K @ 4.4GHz
[Aug 27 17:35] Worker starting
[Aug 27 17:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K
[Aug 27 17:35] p: 332220523.  Time: 119.542 ms.
[Aug 27 17:35] p: 332220523.  Time: 119.498 ms.
[Aug 27 17:35] p: 332220523.  Time: 119.489 ms.
[Aug 27 17:35] p: 332220523.  Time: 119.848 ms.
[Aug 27 17:35] p: 332220523.  Time: 119.550 ms.
[Aug 27 17:35] p: 332220523.  Time: 119.461 ms.
[Aug 27 17:35] p: 332220523.  Time: 119.468 ms.
[Aug 27 17:35] p: 332220523.  Time: 119.867 ms.
[Aug 27 17:35] p: 332220523.  Time: 119.614 ms.
[Aug 27 17:35] p: 332220523.  Time: 119.444 ms.
[Aug 27 17:35] Iterations: 10.  Total time: 1.196 sec.
[Aug 27 17:35] Estimated time to complete this exponent: 459 days, 19 hours, 4 minutes.
[Aug 27 17:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 2 threads
[Aug 27 17:35] p: 332220523.  Time: 61.931 ms.
[Aug 27 17:35] p: 332220523.  Time: 61.902 ms.
[Aug 27 17:35] p: 332220523.  Time: 61.917 ms.
[Aug 27 17:35] p: 332220523.  Time: 61.986 ms.
[Aug 27 17:35] p: 332220523.  Time: 61.982 ms.
[Aug 27 17:35] p: 332220523.  Time: 62.419 ms.
[Aug 27 17:35] p: 332220523.  Time: 61.861 ms.
[Aug 27 17:35] p: 332220523.  Time: 61.890 ms.
[Aug 27 17:35] p: 332220523.  Time: 61.911 ms.
[Aug 27 17:35] p: 332220523.  Time: 62.078 ms.
[Aug 27 17:35] Iterations: 10.  Total time: 0.620 sec.
[Aug 27 17:35] Estimated time to complete this exponent: 238 days, 8 hours, 26 minutes.
[Aug 27 17:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 3 threads
[Aug 27 17:35] p: 332220523.  Time: 44.755 ms.
[Aug 27 17:35] p: 332220523.  Time: 44.989 ms.
[Aug 27 17:35] p: 332220523.  Time: 45.361 ms.
[Aug 27 17:35] p: 332220523.  Time: 44.978 ms.
[Aug 27 17:35] p: 332220523.  Time: 44.848 ms.
[Aug 27 17:35] p: 332220523.  Time: 44.932 ms.
[Aug 27 17:35] p: 332220523.  Time: 44.929 ms.
[Aug 27 17:35] p: 332220523.  Time: 45.761 ms.
[Aug 27 17:35] p: 332220523.  Time: 44.818 ms.
[Aug 27 17:35] p: 332220523.  Time: 44.741 ms.
[Aug 27 17:35] Iterations: 10.  Total time: 0.450 sec.
[Aug 27 17:35] Estimated time to complete this exponent: 173 days, 1 hour, 46 minutes.
[Aug 27 17:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 4 threads
[Aug 27 17:35] p: 332220523.  Time: 39.738 ms.
[Aug 27 17:35] p: 332220523.  Time: 39.413 ms.
[Aug 27 17:35] p: 332220523.  Time: 39.133 ms.
[Aug 27 17:35] p: 332220523.  Time: 39.093 ms.
[Aug 27 17:35] p: 332220523.  Time: 39.057 ms.
[Aug 27 17:35] p: 332220523.  Time: 39.598 ms.
[Aug 27 17:35] p: 332220523.  Time: 39.080 ms.
[Aug 27 17:35] p: 332220523.  Time: 40.131 ms.
[Aug 27 17:35] p: 332220523.  Time: 39.232 ms.
[Aug 27 17:35] p: 332220523.  Time: 39.268 ms.
[Aug 27 17:35] Iterations: 10.  Total time: 0.394 sec.
[Aug 27 17:35] Estimated time to complete this exponent: 151 days, 9 hours, 35 minutes.
[Aug 27 17:35] Worker stopped.
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Old 2012-08-27, 17:49   #82
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Quote:
Originally Posted by joblack View Post
2 x Intel(R) Xeon(R) CPU E5-2690 0 @ 2.90GHz
CenOS 6.3 - 64 Bit
98 GByte RAM
Sweet.
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Old 2012-08-27, 18:57   #83
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Quote:
Originally Posted by joblack View Post
[Worker #1 Aug 22 19:27] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 31 threads
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.991 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.835 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.895 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.822 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.724 ms.
[Worker #1 Aug 22 19:27] Iterations: 5. Total time: 0.099 sec.
[Worker #1 Aug 22 19:27] Estimated time to complete this exponent: 76 days, 8 hours, 8 minutes.
[Worker #1 Aug 22 19:27] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 32 threads
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.811 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.926 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 20.863 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 19.992 ms.
[Worker #1 Aug 22 19:27] p: 332220523. Time: 20.501 ms.
[Worker #1 Aug 22 19:27] Iterations: 5. Total time: 0.101 sec.
[Worker #1 Aug 22 19:27] Estimated time to complete this exponent: 77 days, 17 hours, 50 minutes.
[Worker #1 Aug 22 19:27] Worker stopped.
:surprised
So, why are the even number of threads slower than the previous odd number of threads?

Last fiddled with by Antonio on 2012-08-27 at 18:58
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Old 2012-08-27, 20:05   #84
Dubslow
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Quote:
Originally Posted by Antonio View Post
:surprised
So, why are the even number of threads slower than the previous odd number of threads?
It has nothing to do with even or odd, but simply the fact that there's way too many threads trying to do a not-very-parallel job.
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Old 2012-08-28, 20:17   #85
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Additionally there are 'only' 16 real cpu cores (the rest is hyperthreaded) so everything more than 16 threads will be suboptimal anyways. ;)

Last fiddled with by joblack on 2012-08-28 at 20:18
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Old 2012-08-28, 20:51   #86
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Actually in that benchmark it looks as if the threads are mis-arranged; the '2 thread' case is clearly using two hyperthreads on one CPU, and the timing suggests that the threads are being allocated as 1A 1B 2A 2B 3A 3B 4A 4B ... rather than 1A 2A 3A 4A ...

(or possibly it's using alternating threads on the two physical CPUs; in any case it doesn't look quite right)
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Old 2012-08-31, 11:04   #87
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Quote:
Originally Posted by fivemack View Post
Actually in that benchmark it looks as if the threads are mis-arranged; the '2 thread' case is clearly using two hyperthreads on one CPU, and the timing suggests that the threads are being allocated as 1A 1B 2A 2B 3A 3B 4A 4B ... rather than 1A 2A 3A 4A ...

(or possibly it's using alternating threads on the two physical CPUs; in any case it doesn't look quite right)
You might be right. Maybe the program code has to be adjusted to use 32 logical cores in the right distribution.
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Old 2012-09-10, 15:45   #88
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Intel Core i7 3930K, Sandy Bridge-E, 6 cores
Slightly overclocked to 4 GHz (these can run 4.5 GHz and above)
Windows 7 Pro, 64-bit
16 GB DDR3, 1600 MT/s, 9-9-9-24

[Sep 10 08:34] Using AVX FFT length 19200K, Pass1=768, Pass2=25K
[Sep 10 08:34] Iterations: 20. Total time: 2.692 sec.
[Sep 10 08:34] Estimated time to complete this exponent: 517 days, 10 hours, 29 minutes.


[Sep 10 08:34] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 2 threads
[Sep 10 08:34] Iterations: 20. Total time: 1.371 sec.
[Sep 10 08:34] Estimated time to complete this exponent: 263 days, 15 hours, 17 minutes.


[Sep 10 08:34] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 3 threads
[Sep 10 08:34] Iterations: 20. Total time: 0.928 sec.
[Sep 10 08:34] Estimated time to complete this exponent: 178 days, 8 hours, 17 minutes.


[Sep 10 08:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 4 threads
[Sep 10 08:35] Iterations: 20. Total time: 0.710 sec.
[Sep 10 08:35] Estimated time to complete this exponent: 136 days, 11 hours, 2 minutes.


[Sep 10 08:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 5 threads
[Sep 10 08:35] Iterations: 20. Total time: 0.602 sec.
[Sep 10 08:35] Estimated time to complete this exponent: 115 days, 15 hours, 48 minutes.


[Sep 10 08:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 6 threads
[Sep 10 08:35] Iterations: 20. Total time: 0.530 sec.
[Sep 10 08:35] Estimated time to complete this exponent: 101 days, 23 hours, 3 minutes.


[Sep 10 08:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 7 threads
[Sep 10 08:35] Iterations: 20. Total time: 0.520 sec.
[Sep 10 08:35] Estimated time to complete this exponent: 99 days, 21 hours, 28 minutes.


[Sep 10 08:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 8 threads
[Sep 10 08:35] Iterations: 20. Total time: 0.592 sec.
[Sep 10 08:35] Estimated time to complete this exponent: 113 days, 18 hours, 1 minute.


[Sep 10 08:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 9 threads
[Sep 10 08:35] Iterations: 20. Total time: 0.543 sec.
[Sep 10 08:35] Estimated time to complete this exponent: 104 days, 7 hours, 50 minutes.


[Sep 10 08:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 10 threads
[Sep 10 08:35] Iterations: 20. Total time: 0.563 sec.
[Sep 10 08:35] Estimated time to complete this exponent: 108 days, 4 hours, 10 minutes.


[Sep 10 08:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 11 threads
[Sep 10 08:35] Iterations: 20. Total time: 0.577 sec.
[Sep 10 08:35] Estimated time to complete this exponent: 111 days, 0 hours, 21 minutes.


[Sep 10 08:35] Using AVX FFT length 19200K, Pass1=768, Pass2=25K, 12 threads
[Sep 10 08:35] Iterations: 20. Total time: 0.615 sec.
[Sep 10 08:35] Estimated time to complete this exponent: 118 days, 6 hours, 21 minutes.
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