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Old 2021-01-20, 17:26   #7
kriesel
 
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"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest

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Default V17.0 apparently normal run

From the beginning of a .stat file (V17.0 I think):

Code:
INFO: no restart file found...starting run from scratch.
M332220523: using FFT length 18432K = 18874368 8-byte floats.
 this gives an average   17.601676676008438 bits per digit
Using complex FFT radices        36        16        16        32        32
[Jul 22 13:31:39] M332220523 Iter# = 10000 [ 0.00% complete] clocks = 02:16:04.515 [816.4516 sec/iter] Res64: 1A313D709BFA6663. AvgMaxErr = 0.171224865. MaxErr = 0.250000000.
[Jul 22 15:47:01] M332220523 Iter# = 20000 [ 0.01% complete] clocks = 02:15:19.019 [811.9019 sec/iter] Res64: 73DC7A5C8B839081. AvgMaxErr = 0.171704563. MaxErr = 0.234375000.
[Jul 22 18:02:29] M332220523 Iter# = 30000 [ 0.01% complete] clocks = 02:15:25.632 [812.5633 sec/iter] Res64: B928CD22434EEC7C. AvgMaxErr = 0.171970012. MaxErr = 0.234375000.
[Jul 22 20:17:54] M332220523 Iter# = 40000 [ 0.01% complete] clocks = 02:15:22.185 [812.2186 sec/iter] Res64: 307ECB47139AEB31. AvgMaxErr = 0.172004342. MaxErr = 0.250000000.
[Jul 22 22:33:29] M332220523 Iter# = 50000 [ 0.02% complete] clocks = 02:15:32.470 [813.2471 sec/iter] Res64: 3F64ED9E01C13B1D. AvgMaxErr = 0.171687719. MaxErr = 0.218750000.
[Jul 23 00:49:15] M332220523 Iter# = 60000 [ 0.02% complete] clocks = 02:15:43.121 [814.3121 sec/iter] Res64: B238D7DE50AFACED. AvgMaxErr = 0.171868494. MaxErr = 0.281250000.
[Jul 23 03:04:36] M332220523 Iter# = 70000 [ 0.02% complete] clocks = 02:15:18.738 [811.8738 sec/iter] Res64: 892C20B5F5C4776C. AvgMaxErr = 0.171980529. MaxErr = 0.234375000.
[Jul 23 05:20:00] M332220523 Iter# = 80000 [ 0.02% complete] clocks = 02:15:20.844 [812.0844 sec/iter] Res64: 6374CC678224D058. AvgMaxErr = 0.171895016. MaxErr = 0.250000000.
[Jul 23 07:35:13] M332220523 Iter# = 90000 [ 0.03% complete] clocks = 02:15:10.622 [811.0622 sec/iter] Res64: 393DCD2788664405. AvgMaxErr = 0.172066525. MaxErr = 0.250000000.
[Jul 23 09:51:21] M332220523 Iter# = 100000 [ 0.03% complete] clocks = 02:16:05.131 [816.5132 sec/iter] Res64: 91B688264B5B3F39. AvgMaxErr = 0.171926060. MaxErr = 0.250000000.
Some behaviors to note, in this single-threaded run:
  1. clocks close to but less than elapsed time (difference in wall clock time from previous status output line; this version incorrectly labeled msec/iter values as sec/iter);
  2. clocks value fluctuates somewhat as differing data causes differing code branches on occasion, or variation in instruction timing with differing operands
  3. AvgMaxErr <0.25 but definitely above zero
  4. MaxErr up to 0.25 but definitely above zero
  5. AvgMaxErr differing from line to line
  6. MaxErr differing from line to line
  7. Res64 differing from line to line
  8. If it was a version that used shift, that would vary line to line also.
When in doubt, try running and matching interim residues for known primes or other established values. See the mlucas.c source code, https://www.mersenneforum.org/showpo...82&postcount=4 for LL, https://www.mersenneforum.org/showpo...83&postcount=5 for PRP3, or for large exponents https://www.mersenneforum.org/showpo...83&postcount=5


Top of reference tree: https://www.mersenneforum.org/showpo...22&postcount=1

Last fiddled with by kriesel on 2021-01-20 at 17:28
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