20220429, 16:12  #1  
Mar 2022
61_{10} Posts 
Manual Assignment: Not Needed?
I submitted an assignment I got from the manual assignment form and got the following error:
Quote:
https://www.mersenne.org/report_expo...0011207&full=1 It tells me it has been trial factored up to 81 on primenet and 85 on GPUZ... However, why was this number assigned to me if a factor should have already been found? I found a factor for that number which should have supposedly already been found it? Am I misunderstanding something? 

20220429, 17:33  #2  
Jun 2003
2×2,693 Posts 
Quote:
But those are the limits, not the actual TF already done. The fact that you were given the assignment for 7475 mean, there was no record of any higher factoring. And we see nothing on mersenne.org that suggests otherwise. Most likely what happened is, you might've clicked submit twice (without even realizing), and the first submit recorded the factor, and the second submit resulted in the "not needed" error. 

20220429, 17:35  #3  
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
1101000000010_{2} Posts 
Quote:
Not sure what you meant when you typed GPUZ (graphics card monitoring utility GPUZ doesn't fit here; maybe GPUto72?) https://www.mersenne.ca/exponent/900011207 on James Heinrich's server has also updated. (It normally updates from mersenne.org nightly) It shows 3 rows near page top, respectively: actual (completed); primenet goals (for on CPUs); GPUto72 goals (for on GPUs). Mersenne.ca lists the exponent as completed to 74 bits, because your run stopped when it found a factor before completing to 75 bits. That's what the * means in its factor found line on mersenne.org. Last fiddled with by kriesel on 20220429 at 17:44 

20220429, 23:54  #4  
Mar 2022
61 Posts 
Quote:
Kriesel, yes, sorry, it was a typo on my end, GPU72. So the limit is what the factor should be trial factored to? Let's say for example 333,333,991: https://www.mersenne.ca/exponent/333333991 The mersenne.ca lists the limit to 78 for primenet and I have performed a P1 test for this digit. At this point, would perform a PRP test? Last fiddled with by Magellan3s on 20220429 at 23:54 

20220430, 01:12  #5  
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
24612_{8} Posts 
Quote:
Are you doing TF with a GPU? If so, take it to 81. 

20220430, 03:15  #6  
Mar 2022
61 Posts 
Quote:
https://www.mersenne.org/report_expo...3333991&full=1 I'm currently in the middle of taking it to 82 and it will finish 82 in 2.5 hrs. I did a fast P1 test on it but I think the bounds weren't optimized for the new 30.8 beta so I am currently redoing the P1 test on that as well. Code:
[Work thread Apr 29 19:57] Setting affinity to run worker on CPU core #1 [Work thread Apr 29 19:57] Optimal P1 factoring of M333333991 using up to 57344MB of memory. [Work thread Apr 29 19:57] Assuming no factors below 2^81 and 1.3 primality tests saved if a factor is found. [Work thread Apr 29 19:57] Optimal bounds are B1=1838000, B2=226867000 [Work thread Apr 29 19:57] Chance of finding a factor is an estimated 4.71% Last fiddled with by Magellan3s on 20220430 at 03:17 

20220430, 07:54  #7  
Banned
"Luigi"
Aug 2002
Team Italia
4843_{10} Posts 
Quote:


20220430, 13:07  #8 
Mar 2022
61_{10} Posts 
Yes! This new PC build has an I9 12900K (avx512) (5.2 Ghz) and 64 GB of Corsair DDR5 Ram. I was actually debating putting in two more sticks of 32 GB DDR5 ram (for a total of 128) when I saw the new beta Mprime utilizes ram differently but at $500 for more memory, it would have to perform DRAMATICALLY better for me to justify the cost!
Last fiddled with by Magellan3s on 20220430 at 13:08 
20220430, 17:22  #9  
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
1101000000010_{2} Posts 
Quote:
This sort of thing is covered in https://www.mersenneforum.org/showpo...7&postcount=12 and somewhat in the background reference post, item 35. Quote:
In Mlucas, 64 GiB ram should be enough to do even OBD P1 stage 2 factoring. Have you tried mfakto or gpuowl on the UHD770 IGP? Last fiddled with by kriesel on 20220430 at 17:37 

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