20200807, 08:21  #628  
"Oliver"
Sep 2017
Porta Westfalica, DE
2^{2}·73 Posts 
Quote:
Quote:
Of course, no one will/can force you. 

20200807, 14:20  #629  
Sep 2017
USA
11·13 Posts 
Quote:
If the goal is to "clear the deck" of double checks, then PRPVDF is the way to go. From above: If a known forumite is actively trying to diagnose hardware issues, then I am happy to help with a LLDC, provided that someone else is just as willing to run another test. But PRP has been out for over a year & everyone should have switched by now. At this point, it would hopefully be finding errors that have already been fixed. 

20200807, 14:37  #630 
"Oliver"
Sep 2017
Porta Westfalica, DE
124_{16} Posts 
You are correct. I skipped the fact that those were exponents with one suspect result. In that case, my reasoning from above weighs in much less.

20200808, 23:56  #631  
Dec 2019
3·5 Posts 
Thanks RTE and Uncwilly. I was mostly thinking about the Ghz days that I erroneously have on my account, but I suppose its not a huge deal in my/my team's ranking.
Quote:


20200811, 14:09  #632 
Aug 2020
41_{8} Posts 
I took DoubleCheck=83593817,76,1

20200812, 10:43  #634 
Oct 2018
Slovakia
4A_{16} Posts 
@ChZ: I took.

20200812, 15:04  #635 
Jul 2009
Germany
335_{10} Posts 

20200812, 15:46  #636 
"Oliver"
Sep 2017
Porta Westfalica, DE
100100100_{2} Posts 
No, as soon as the LL run has a verified "brother/sister", we have reached our main goal for that exponent  we have a correct primality result for this exponent with absurdly high probability. There is a mathematical chance of error, but is extremely, extremely small.

20200812, 18:20  #637  
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
2×4,297 Posts 
Quote:
If there are 2 LL runs that mismatch and we have no reason to think that a particular one of those is flawed (one or both may be, but sometimes small errors happen at random), a 3rd LL test should quite reasonably decide which is correct. If there are 2 LL runs that mismatch and we have a reason to think that a particular one of those is flawed, then there is a higher chance that a 4th check will be needed. With the Gerbicz error checking available in the PRP tests, the chance that an error gets through is very low. And now we have the added benefit of the VDF certification process. Putting these in effect tips the expected total cycles invested in proving a number not prime in favour of running a PRP w/cert on exponents with a suspect result and an LL that is not matching. (Not for any single exponent, but as a whole. The number that would require a quad check LL are enough to tip the scale.) 

20200812, 18:21  #638 
Jul 2009
Germany
517_{8} Posts 
I performed this DC'S because the FFT size makes it the optimal work for the Ryzen 3700X and Vega64 in terms of GHz / Days.
99% reliable with Win Pro 10 ,Ryzen 3700X ans Prime95.29.8b6 and Asus ROC Vega 64 mining and gpuowl v6.11292 . unfortunately no double checks in the 53 / 54M area CPU / GPU are available. Last fiddled with by moebius on 20200812 at 18:35 
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