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Old 2020-03-18, 10:40   #320
ChZ
 
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Requesting triple-check:

DoubleCheck=50691139,75,1
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Old 2020-03-18, 14:30   #321
Uncwilly
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Quote:
Originally Posted by ChZ View Post
Requesting triple-check:

DoubleCheck=50691139,75,1
Queued with an AID.
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Old 2020-03-18, 14:49   #322
kriesel
 
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Ernst: Do you have interim save files you could resume from? My run is keeping save files spaced every 1M iterations.
Quote:
Originally Posted by ewmayer View Post
Ken, if your GPU client uses the convention that LL initial seed is iteration 0, you can compare interim every-1M-iter Res64s vs mine:
Code:
[2020-02-11 10:58:54] ...
[2020-03-03 19:11:20] M50699483 Iter# = 33000000  Res64: 7A2717061965634C. shift: 14550787
[2020-03-04 11:28:49] M50699483 Iter# = 34000000  Res64: 265C4029588A33E5. shift: 38862938
[2020-03-05 15:55:23] M50699483 Iter# = 35000000  Res64: C7EA44FB046C7866. shift: 50647604
[2020-03-06 07:03:11] M50699483 Iter# = 36000000  Res64: FA9720C207C67570. shift: 4745807
[2020-03-06 21:57:14] M50699483 Iter# = 37000000  Res64: 00FBF511991AFED1. shift: 28508816
[2020-03-07 18:07:49] M50699483 Iter# = 38000000  Res64: 9E5851EE2357B20F. shift: 13420991
[2020-03-08 10:31:24] M50699483 Iter# = 39000000  Res64: FBE3CB493A25E922. shift: 9572750
[2020-03-09 01:44:31] M50699483 Iter# = 40000000  Res64: B5BA6759F6360A0C. shift: 18147084
[2020-03-09 17:00:40] M50699483 Iter# = 41000000  Res64: C94D0040BBE2D050. shift: 4939962
[2020-03-10 09:58:22] M50699483 Iter# = 42000000  Res64: 4B934CF3A43F88A2. shift: 41353787
[2020-03-11 03:07:06] M50699483 Iter# = 43000000  Res64: 5E7AEE9752819113. shift: 19740705
[2020-03-12 00:55:07] M50699483 Iter# = 44000000  Res64: A53578C09D91C1BE. shift: 15246709
[2020-03-12 23:38:08] M50699483 Iter# = 45000000  Res64: 561A2C7C7ACDCE8A. shift: 40676835
[2020-03-13 21:23:49] M50699483 Iter# = 46000000  Res64: 4DFDE6A9FF0157A9. shift: 20021361
[2020-03-14 12:26:05] M50699483 Iter# = 47000000  Res64: 7B305450D7F703AA. shift: 20321389
[2020-03-15 03:15:30] M50699483 Iter# = 48000000  Res64: 5D2C15BAA7AD490F. shift: 23413838
[2020-03-15 23:24:49] M50699483 Iter# = 49000000  Res64: 5E37DEB52957C078. shift: 14058798
[2020-03-16 14:40:29] M50699483 Iter# = 50000000  Res64: E1293037BCEA6CE7. shift: 44564712
My CUDALucas v2.06 on GTX1080Ti run diverges from yours between 33M and 34M:

Code:
|  Mar 18  07:35:50  |  M50699483  31000000  0x0082df9e0893d9d2  |  2688K  0.25000   2.0313  101.56s  |     11:06:56  61.14%  |
|  Mar 18  08:09:39  |  M50699483  32000000  0x9b2d2709d0339c17  |  2688K  0.28125   2.0253  101.26s  |     10:33:03  63.11%  |
|  Mar 18  08:43:25  |  M50699483  33000000  0x7a2717061965634c  |  2688K  0.25000   2.0253  101.26s  |      9:59:09  65.08%  |
|  Mar 18  09:17:11  |  M50699483  34000000  0xa22077a84ffa1c25  |  2688K  0.26563   2.0254  101.27s  |      9:25:15  67.06%  |
At finer granularity, with notes on progress of repeat from 33M:
Code:
|  Mar 18  08:45:06  |  M50699483  33050000  0x37c64cf8f8be0f90  |  2688K  0.26563   2.0362  101.81s  |      9:57:28  65.18%  | reproduced
|  Mar 18  08:46:47  |  M50699483  33100000  0xbb849ff55738c8d5  |  2688K  0.26563   2.0253  101.26s  |      9:55:46  65.28%  | reproduced
|  Mar 18  08:48:29  |  M50699483  33150000  0x1cd84913571585e1  |  2688K  0.26563   2.0253  101.26s  |      9:54:04  65.38%  | reproduced
|  Mar 18  08:50:10  |  M50699483  33200000  0xef8c9ea2bb982cd2  |  2688K  0.26563   2.0254  101.27s  |      9:52:23  65.48%  | reproduced
|  Mar 18  08:51:51  |  M50699483  33250000  0xe80447b573ef030a  |  2688K  0.25000   2.0253  101.26s  |      9:50:41  65.58%  | reproduced
|   Date     Time    |   Test Num     Iter        Residue        |    FFT   Error     ms/It     Time  |       ETA      Done   |
|  Mar 18  08:53:32  |  M50699483  33300000  0x0ec1cc2621d92648  |  2688K  0.26563   2.0254  101.26s  |      9:48:59  65.68%  | reproduced
|  Mar 18  08:55:14  |  M50699483  33350000  0xac334a394a51f8df  |  2688K  0.28125   2.0253  101.26s  |      9:47:17  65.77%  | reproduced
|  Mar 18  08:56:55  |  M50699483  33400000  0x5647ecc4a6bfe11b  |  2688K  0.26563   2.0252  101.26s  |      9:45:36  65.87%  | reproduced
|  Mar 18  08:58:36  |  M50699483  33450000  0xab3476d0c81b41cc  |  2688K  0.25000   2.0252  101.26s  |      9:43:54  65.97%  | reproduced
|  Mar 18  09:00:17  |  M50699483  33500000  0x64d625bfc4429707  |  2688K  0.28125   2.0254  101.27s  |      9:42:12  66.07%  | reproduced
|  Mar 18  09:01:59  |  M50699483  33550000  0xdf554459fc451fe2  |  2688K  0.28125   2.0253  101.26s  |      9:40:31  66.17%  | reproduced
|  Mar 18  09:03:40  |  M50699483  33600000  0x219a46abd5061aa9  |  2688K  0.25000   2.0253  101.26s  |      9:38:49  66.27%  | reproduced
|  Mar 18  09:05:21  |  M50699483  33650000  0xccc27947bc7707c8  |  2688K  0.28125   2.0252  101.26s  |      9:37:07  66.37%  | reproduced
|  Mar 18  09:07:03  |  M50699483  33700000  0xf77df0cc388e7949  |  2688K  0.26563   2.0254  101.27s  |      9:35:26  66.47%  | reproduced
|  Mar 18  09:08:44  |  M50699483  33750000  0xa64fba39022d141f  |  2688K  0.28125   2.0254  101.27s  |      9:33:44  66.56%  | reproduced
|  Mar 18  09:10:25  |  M50699483  33800000  0x56e89f72185d56f7  |  2688K  0.25000   2.0253  101.26s  |      9:32:02  66.66%  | reproduced
|  Mar 18  09:12:06  |  M50699483  33850000  0x0cbcd708bbcfae8b  |  2688K  0.26563   2.0253  101.26s  |      9:30:20  66.76%  | reproduced
|  Mar 18  09:13:48  |  M50699483  33900000  0x820a85c3d8c9752c  |  2688K  0.26563   2.0253  101.26s  |      9:28:39  66.86%  | reproduced
|  Mar 18  09:15:29  |  M50699483  33950000  0x54799a3e9105fa36  |  2688K  0.25000   2.0253  101.26s  |      9:26:57  66.96%  | reproduced
|  Mar 18  09:17:11  |  M50699483  34000000  0xa22077a84ffa1c25  |  2688K  0.26563   2.0254  101.27s  |      9:25:15  67.06%  | reproduced
Halting repeat run, resuming from 35M+ save file.

Last fiddled with by kriesel on 2020-03-18 at 15:31
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Old 2020-03-18, 15:53   #323
Uncwilly
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Ernst and Ken, I have started a run on the exponent with residue reporting and save files turned on.
[edit]Oops. I saved prime.txt before closing Prime95. I fixed it and have it running again.

Last fiddled with by Uncwilly on 2020-03-18 at 20:51
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Old 2020-03-18, 18:29   #324
ewmayer
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Ken, Mlucas saves every-10M savefiles by default. Residue-reporting granularity on runs of <= 4 threads is every 10Kiter, I have narrowed the divergence to the 33.10-33.15Miter interval, the 2 Res64s which bookend that are bolded in my logfile excerpt below:
Code:
[2020-03-03 20:39:45] M50699483 Iter# = 33100000 Res64: BB849FF55738C8D5. AvgMaxErr = 0.071159536. MaxErr = 0.109375000. Residue shift count = 9258343.
[2020-03-03 20:48:40] M50699483 Iter# = 33110000 Res64: 5B7BD8EA7D60E545. AvgMaxErr = 0.071040688. MaxErr = 0.109375000. Residue shift count = 24888588.
[2020-03-03 20:57:28] M50699483 Iter# = 33120000 Res64: 98FBFA574398CDC8. AvgMaxErr = 0.071026953. MaxErr = 0.109375000. Residue shift count = 4513422.
[2020-03-03 21:06:14] M50699483 Iter# = 33130000 Res64: DBEC805AFE89F02C. AvgMaxErr = 0.071080518. MaxErr = 0.109375000. Residue shift count = 26304104.
M50699483 Roundoff warning on iteration 33139667, maxerr =   0.500000000000
 Retrying iteration interval to see if roundoff error is reproducible.
Restarting M50699483 at iteration = 33130000. Res64: DBEC805AFE89F02C, residue shift count = 26304104
M50699483: using FFT length 2816K = 2883584 8-byte floats, initial residue shift count = 26304104
 this gives an average   17.582107197154652 bits per digit
Retry of iteration interval with fatal roundoff error was successful.
[2020-03-03 21:23:43] M50699483 Iter# = 33140000 Res64: 3FE1873AE0CFDBAD. AvgMaxErr = 0.071077051. MaxErr = 0.160156250. Residue shift count = 10073663.
[2020-03-03 21:32:33] M50699483 Iter# = 33150000 Res64: 68D413A52601DAB7. AvgMaxErr = 0.071095947. MaxErr = 0.101562500. Residue shift count = 12690212.
Note the kind of data-corruption-detected sudden-fatal-ROE as seen above is not at all unusual on my notoriously flaky Haswell system - I find running in such a context to be a valuable QA exercise because it approximates the worst-case scenario users of my code may face with their own hardware. So you can see from the above the program detected a glitch in the matrix, as a result of which it restarted from the iteration = 33130000 savefile, and retry of the ensuing 10Kiter interval was successful. But for every such detected data-corruption error there is a smaller number of 'silent' ones, which are the reason the PRP+Gerbicz option is so valuable on this kind of hardware - my current production runs are doing PRP-tests, this DC was just last of a long-running low-priority LL-DC batch.

Ken, Uncwilly, can either of you rerun the same 50K interval with the finer 10Kiter reporting granularity? It would be intersting to see if the divergence occurred before the above fatal-ROE/retry incident, or after.

In the meantime I've low-prioritized my 2 production tests (one main, one lower-priority 'backup' run in case the first crashes) on the Haswell and restarted the run from the 30M savefile. But weirdly, doing a 'top' just now I see my 2 production runs are listed at the lowest priority (renice -n 19) but are still grabbing cycles at a higher priority than the retry-DC-from-30M run ... 'sudo renice -n -4' of the latter doesn't help, DC run still just getting 1 core's worth of cycles. Frickin' Ubuntu ... so 'fg' both production jobs and ctrl-z to suspend them. That's better ... with ~3Miter to go, my DC-retry run will hit the divergence point in ~7 hours.

Last fiddled with by ewmayer on 2020-03-18 at 18:56
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Old 2020-03-18, 19:32   #325
kriesel
 
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Quote:
Originally Posted by ewmayer View Post
Ken, Mlucas saves every-10M savefiles by default. Residue-reporting granularity on runs of <= 4 threads is every 10Kiter, I have narrowed the divergence to the 33.10-33.15Miter interval, the 2 Res64s which bookend that are bolded in my logfile excerpt below
...

Ken, Uncwilly, can either of you rerun the same 50K interval with the finer 10Kiter reporting granularity? It would be interesting to see if the divergence occurred before the above fatal-ROE/retry incident, or after.
Okay. Forked it to a GTX1080 on a different system that was doing interruptible P-1 in gpuowl, CUDALucas v2.06 at 5K iterations console printout, 100K save file interval, from 33M save file.
Code:
CUDALucas v2.06beta 64-bit build, compiled May  5 2017 @ 13:02:54

binary compiled for CUDA  8.0
CUDA runtime version      8.0
CUDA driver version       8.0

------- DEVICE 0 -------
name                GeForce GTX 1080
UUID                GPU-5e2c5531-4684-57ec-6393-8b762f286c70
ECC Support?        Disabled
Compatibility       6.1
clockRate (MHz)     1797
memClockRate (MHz)  5005
totalGlobalMem      8589934592
totalConstMem       65536
l2CacheSize         2097152
sharedMemPerBlock   49152
regsPerBlock        65536
warpSize            32
memPitch            2147483647
maxThreadsPerBlock  1024
maxThreadsPerMP     2048
multiProcessorCount 20
maxThreadsDim[3]    1024,1024,64
maxGridSize[3]      2147483647,65535,65535
textureAlignment    512
deviceOverlap       1
pciDeviceID         0
pciBusID            4

You may experience a small delay on 1st startup to due to Just-in-Time Compilation

Using threads: square 32, splice 128.

Continuing M50699483 @ iteration 33000001 with fft length 2688K, 65.09% done

|   Date     Time    |   Test Num     Iter        Residue        |    FFT   Error     ms/It     Time  |       ETA      Done   |
|  Mar 18  14:17:10  |  M50699483  33005000  0xdd429c1ccbd7a62a  |  2688K  0.25000   2.8121   14.05s  |      9:59:01  65.09%  |
|  Mar 18  14:17:24  |  M50699483  33010000  0xff4bbbe125ee1176  |  2688K  0.23438   2.8099   14.04s  |      9:58:53  65.10%  |
|  Mar 18  14:17:38  |  M50699483  33015000  0x7bc220867e3d7921  |  2688K  0.25000   2.8094   14.04s  |      9:58:45  65.11%  |
|  Mar 18  14:17:52  |  M50699483  33020000  0x4ab93d7fb1b9410a  |  2688K  0.25000   2.8088   14.04s  |      9:58:37  65.12%  |
|  Mar 18  14:18:06  |  M50699483  33025000  0x0dd3e63997a7117e  |  2688K  0.25000   2.8055   14.02s  |      9:58:29  65.13%  |
|  Mar 18  14:18:20  |  M50699483  33030000  0xdb45cff854629006  |  2688K  0.25000   2.8100   14.05s  |      9:58:21  65.14%  |
|  Mar 18  14:18:34  |  M50699483  33035000  0xc927fe56adabaf33  |  2688K  0.25000   2.8171   14.08s  |      9:58:13  65.15%  |
|  Mar 18  14:18:48  |  M50699483  33040000  0x671966f21715efe7  |  2688K  0.25000   2.8176   14.08s  |      9:58:05  65.16%  |
|  Mar 18  14:19:02  |  M50699483  33045000  0xc24775f499646abb  |  2688K  0.25000   2.8184   14.09s  |      9:57:56  65.17%  |
|  Mar 18  14:19:16  |  M50699483  33050000  0x37c64cf8f8be0f90  |  2688K  0.25000   2.8173   14.08s  |      9:57:48  65.18%  |
|  Mar 18  14:19:31  |  M50699483  33055000  0xea0b3d9144c22bab  |  2688K  0.23438   2.8408   14.20s  |      9:57:40  65.19%  |
|  Mar 18  14:19:45  |  M50699483  33060000  0xf4e172ae2efbf3c0  |  2688K  0.25000   2.8356   14.17s  |      9:57:32  65.20%  |
|  Mar 18  14:19:59  |  M50699483  33065000  0x72232fa331f55cf9  |  2688K  0.25000   2.8219   14.10s  |      9:57:24  65.21%  |
|  Mar 18  14:20:13  |  M50699483  33070000  0x207baea46fe47f92  |  2688K  0.23438   2.8226   14.11s  |      9:57:16  65.22%  |
|  Mar 18  14:20:27  |  M50699483  33075000  0x07d271a17b19c3d5  |  2688K  0.21875   2.8245   14.12s  |      9:57:08  65.23%  |
|  Mar 18  14:20:41  |  M50699483  33080000  0x1ee9e9c6554ccf1e  |  2688K  0.25000   2.8241   14.12s  |      9:57:00  65.24%  |
|  Mar 18  14:20:55  |  M50699483  33085000  0xdc08ddc9d7820922  |  2688K  0.25000   2.8248   14.12s  |      9:56:52  65.25%  |
|  Mar 18  14:21:10  |  M50699483  33090000  0xd19878f22036fac1  |  2688K  0.21875   2.8245   14.12s  |      9:56:44  65.26%  |
|  Mar 18  14:21:24  |  M50699483  33095000  0x3e5e1634ab32f2e3  |  2688K  0.25000   2.8275   14.13s  |      9:56:36  65.27%  |
|   Date     Time    |   Test Num     Iter        Residue        |    FFT   Error     ms/It     Time  |       ETA      Done   |
|  Mar 18  14:21:38  |  M50699483  33100000  0xbb849ff55738c8d5  |  2688K  0.25000   2.8287   14.14s  |      9:56:28  65.28%  |
|  Mar 18  14:21:52  |  M50699483  33105000  0xfe2846d8d8d8e12f  |  2688K  0.25000   2.9227   14.61s  |      9:56:20  65.29%  |
|  Mar 18  14:22:07  |  M50699483  33110000  0x5b7bd8ea7d60e545  |  2688K  0.25000   2.8426   14.21s  |      9:56:12  65.30%  |
|  Mar 18  14:22:21  |  M50699483  33115000  0x3dc9f02704f5e3cc  |  2688K  0.25000   2.8421   14.21s  |      9:56:04  65.31%  |
|  Mar 18  14:22:35  |  M50699483  33120000  0x98fbfa574398cdc8  |  2688K  0.25000   2.8424   14.21s  |      9:55:56  65.32%  |
|  Mar 18  14:22:49  |  M50699483  33125000  0x3c08397825944984  |  2688K  0.25000   2.8407   14.20s  |      9:55:48  65.33%  |
|  Mar 18  14:23:03  |  M50699483  33130000  0xdbec805afe89f02c  |  2688K  0.25000   2.8380   14.19s  |      9:55:40  65.34%  |
|  Mar 18  14:23:18  |  M50699483  33135000  0xcc37b1c7d24241ee  |  2688K  0.25000   2.8364   14.18s  |      9:55:32  65.35%  |
|  Mar 18  14:23:32  |  M50699483  33140000  0x067c546da1f13507  |  2688K  0.25000   2.8237   14.11s  |      9:55:24  65.36%  |
|  Mar 18  14:23:46  |  M50699483  33145000  0x62d3b4b0d086b501  |  2688K  0.26563   2.8250   14.12s  |      9:55:16  65.37%  |
|  Mar 18  14:24:00  |  M50699483  33150000  0x1cd84913571585e1  |  2688K  0.23438   2.8247   14.12s  |      9:55:08  65.38%  |
|  Mar 18  14:24:14  |  M50699483  33155000  0x5b55b049e6038c81  |  2688K  0.24219   2.8244   14.12s  |      9:55:00  65.39%  |
|  Mar 18  14:24:28  |  M50699483  33160000  0x4fa86767dd1f39bf  |  2688K  0.25000   2.8245   14.12s  |      9:54:52  65.40%  |
|  Mar 18  14:24:42  |  M50699483  33165000  0x2d062794c09182d6  |  2688K  0.23438   2.8246   14.12s  |      9:54:43  65.41%  |
|  Mar 18  14:24:56  |  M50699483  33170000  0xf644b10ec263f600  |  2688K  0.25000   2.8246   14.12s  |      9:54:35  65.42%  |
|  Mar 18  14:25:11  |  M50699483  33175000  0xf9a9dc418fc724ea  |  2688K  0.25000   2.8249   14.12s  |      9:54:27  65.43%  |
|  Mar 18  14:25:25  |  M50699483  33180000  0xb461f655a081955b  |  2688K  0.25000   2.8244   14.12s  |      9:54:19  65.44%  |
|  Mar 18  14:25:39  |  M50699483  33185000  0xf43ce356e8e26ea7  |  2688K  0.22461   2.8258   14.12s  |      9:54:11  65.45%  |
|  Mar 18  14:25:53  |  M50699483  33190000  0xba94f36ee57b6775  |  2688K  0.24219   2.8256   14.12s  |      9:54:03  65.46%  |
|   Date     Time    |   Test Num     Iter        Residue        |    FFT   Error     ms/It     Time  |       ETA      Done   |
|  Mar 18  14:26:07  |  M50699483  33195000  0x13135c7b4ff819a7  |  2688K  0.23438   2.8256   14.12s  |      9:53:55  65.47%  |
|  Mar 18  14:26:22  |  M50699483  33200000  0xef8c9ea2bb982cd2  |  2688K  0.25000   2.8248   14.12s  |      9:53:47  65.48% |
Matches the earlier GTX1080Ti residues, reposted below:

Code:
|   Date     Time    |   Test Num     Iter        Residue        |    FFT   Error     ms/It     Time  |       ETA      Done   |
|  Mar 18  09:57:27  |  M50699483  33050000  0x37c64cf8f8be0f90  |  2688K  0.25000   2.0097  100.48s  |      9:57:27  65.18%  |
|  Mar 18  09:59:08  |  M50699483  33100000  0xbb849ff55738c8d5  |  2688K  0.25000   2.0190  100.95s  |      9:55:45  65.28%  |
|  Mar 18  10:00:49  |  M50699483  33150000  0x1cd84913571585e1  |  2688K  0.26563   2.0231  101.15s  |      9:54:03  65.38%  |
|  Mar 18  10:02:30  |  M50699483  33200000  0xef8c9ea2bb982cd2  |  2688K  0.25000   2.0237  101.18s  |      9:52:22  65.48%  |
CUDALucas is doing well, considering it hasn't even the Jacobi check.

Last fiddled with by kriesel on 2020-03-18 at 19:36
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Old 2020-03-18, 19:46   #326
ewmayer
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Ken, is every-10K reporting an option for you?
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Old 2020-03-18, 20:01   #327
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Quote:
Originally Posted by ewmayer View Post
Ken, is every-10K reporting an option for you?
Yes, and finer or coarser. If Mlucas can't adjust, you may want to edit mlucas source and recompile so you can look at where the divergence occurs at finer resolution when divergences occur.
Fine/frequent output can be edited down. Coarse/infrequent has to be rerun when questions arise, which might be enlightened by more frequent res64 output.
I was not sure what the lower limit is in CUDALucas. It is apparently a single iteration. I'm not sure what the upper limit is, but I've run 105.
From CUDALucas.ini:
Code:
# ErrorIterations tells how often the roundoff error is checked. Larger values
# give shorter iteration times, but introduce some uncertainty as to the actual
# maximum roundoff error that occurs during the test. Default is 100.
# ReportIterations is the same as the -x option; it determines how often
# screen output is written. Default is 10000.
# CheckpointIterations is the same as the -c option; it determines how often
# checkpoints are written. Default is 100000.
# Each of these values should be of the form k * 10^n with k = 1, 2, or 5.

ErrorIterations=100
ReportIterations=50000
CheckpointIterations=1000000
A quick experiment shows that ReportIterations = 1 works, although the speed penalty is considerable relative to the 2 ms/iter normal case, and the log file would explode in size:
Code:
|   Date     Time    |   Test Num     Iter        Residue        |    FFT   Error     ms/It     Time  |       ETA      Done   |
|  Mar 18  14:55:54  |  M50699483  42788602  0xc672edd2fec9d543  |  2688K  0.25000   1.#INF    0.00s  |      4:27:44  84.39%  |
|  Mar 18  14:55:54  |  M50699483  42788603  0x073e9eb282310661  |  2688K  0.20313  10.4790    0.01s  |      4:27:44  84.39%  |
|  Mar 18  14:55:54  |  M50699483  42788604  0xbe3d42c802206844  |  2688K  0.20313   9.8760    0.00s  |      4:27:44  84.39%  |
There's little speed penalty at ReportIterations = 100 or higher.
Code:
Iter time on GTX1080Ti, CUDALucas v2.06, M53M, versus ReportIterations
#     ms/iter
1     9.5
10    2.75
100   2.05
1000  2.02
10000 2.02
50000 2.03

Last fiddled with by kriesel on 2020-03-18 at 20:47
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Old 2020-03-18, 21:15   #328
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Ironically, Ernst's res64 was:
Code:
[2020-03-03 21:23:43] M50699483 Iter# = 33140000 Res64: 3FE1873AE0CFDBAD. AvgMaxErr = 0.071077051. MaxErr = 0.160156250. Residue shift count = 10073663.
vs. my CUDALucas output
Code:
|  Mar 18  14:23:03  |  M50699483  33130000  0xdbec805afe89f02c  |  2688K  0.25000   2.8380   14.19s  |      9:55:40  65.34%  |
|  Mar 18  14:23:18  |  M50699483  33135000  0xcc37b1c7d24241ee  |  2688K  0.25000   2.8364   14.18s  |      9:55:32  65.35%  |
|  Mar 18  14:23:32  |  M50699483  33140000  0x067c546da1f13507  |  2688K  0.25000   2.8237   14.11s  |      9:55:24  65.36%  |
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Old 2020-03-18, 21:57   #329
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Quote:
Originally Posted by kriesel View Post
Ironically, Ernst's res64 was:[snip]
LOL, I hadn't noticed that the Res64 was itself confessing its badness! :) Anyhow, once my re-run-from-30M gets close, I'll save a copy of the restartfile in case I want to re-run a small subinterval with finer-than-10K granularity.

Ken, I assume your DC run has completed or is close? Still don't see your result appearing on the exponent page.
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Old 2020-03-18, 22:08   #330
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Code:
[2020-02-13 23:10:28] M50699483 Iter# =  6000000  Res64: 0C3E78B1C77FA688. shift: 33080656
Code:
[Mar 18 14:19] M50699483 interim LL residue AF0BF1AEDBD6D468 at iteration 6000000
I guess my shift is not zero.

Last fiddled with by Uncwilly on 2020-03-18 at 22:08
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