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Old 2019-05-05, 23:12   #1
leumas
 
May 2019

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Default Prime? Nice try, but no cigar!!

M( 91403479 )P, offset = 473212, n = 5600K, CUDALucas v2.05.1


what do i do?
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Old 2019-05-05, 23:14   #2
GP2
 
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Quote:
Originally Posted by leumas View Post
what do i do?
Upgrade to a version of CUDALucas more recent than 2.05.1
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Old 2019-05-06, 00:32   #3
leumas
 
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the most uptodate version is 2.05.01
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Old 2019-05-06, 00:34   #4
leumas
 
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nvm found it


Code:
Starting M91403479 fft length = 5600K


|   Date     Time    |   Test Num     Iter        Residue        |    FFT   Error     ms/It     Time  |       ETA      Done   |
|  May 05  17:33:56  |  M91403479     10000  0x14b7fdfb6e844ec8  |  5600K  0.01563   46.838   234.1s  |   49:10:41:33   0.01%  |
why is it taking significantly longer now?
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Old 2019-05-06, 00:38   #5
Batalov
 
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Quote:
Originally Posted by leumas View Post
why is it taking significantly longer now?
Because this version works (as opposed to pretending to work).
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Old 2019-05-06, 00:43   #6
leumas
 
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oh nvm it goes back to 30 days now probbly i was running the card on sth else


does that mean i wasted a month of idle computing time for nothin?
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Old 2019-05-06, 00:51   #7
GP2
 
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Quote:
Code:
Starting M91403479 fft length = 5600K

|   Date     Time    |   Test Num     Iter        Residue        |    FFT   Error     ms/It     Time  |       ETA      Done   |
|  May 05  17:33:56  |  M91403479     10000  0x14b7fdfb6e844ec8  |  5600K  0.01563   46.838   234.1s  |   49:10:41:33   0.01%  |
Did you retain the output from the first run? If so, can you post it here as an attachment?

If the Residue column says 0x0000000000000000 for anything but the final result, it's almost certainly bad.

Last fiddled with by GP2 on 2019-05-06 at 00:51
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Old 2019-05-09, 07:07   #8
GP2
 
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A double check indicates that M91403479 is not prime.
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Old 2019-05-09, 07:52   #9
ATH
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CUDALucas 2.06 is finally listed as the main version and not a beta version:

https://sourceforge.net/projects/cudalucas/files/
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Old 2019-05-09, 09:11   #10
henryzz
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I have renamed the thread so we don't get a ton of people thinking there is actually a prime.
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Old 2019-05-11, 21:15   #11
kriesel
 
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Quote:
Originally Posted by leumas View Post
M( 91403479 )P, offset = 473212, n = 5600K, CUDALucas v2.05.1

what do i do?
If it had been: http://www.mersenneforum.org/showpos...5&postcount=14
Some recommended CUDALucas background reading (particularly posts 3, 4 and 6 and attachments) https://www.mersenneforum.org/showthread.php?t=23387
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