20211110, 17:37  #375  
Jun 2003
3^{4}×5×13 Posts 
Quote:
So while I agree that doing too much TF is waste, this isn't the way to argue that point. 

20211110, 20:18  #376  
"Tucker Kao"
Jan 2020
Head Base M168202123
2^{5}·3·7 Posts 
Quote:
Once I get my new PC which I've already ordered, I think it'll be the best to do P1 with B1 = 1,600,000 and B2 = 65,000,000 with the TF up to 2^79 on that. TF from 2^78 to 2^79 of M168,***,*23 will take around 2 hours and 20 minutes on Geforce 3080. Last fiddled with by tuckerkao on 20211110 at 20:22 

20211111, 03:53  #377  
"Tucker Kao"
Jan 2020
Head Base M168202123
2^{5}·3·7 Posts 
Quote:
Nvidia Geforce 3080 is way more friendly in the video game field than AMD Radeon 6900 XT. I don't just acquire a video card for 1 single purpose, but I don't rule out the RDNA 3 Radeon 7900 XT in the future because AMD is catching up. There are more users who are willing to work on the PRPs than TFs(especially the bit 1 higher than the recommended level) or P1, so that makes sense for me to focus more on the TF efficiency than the PRP efficiency. Geforce 3080 Ti cost $665 more than Geforce 3080(is on sale) on the website I frequenly look, so there's no reason to buy something like Geforce 3090 because it costs more than double of that Geforce 3080 but not the TF rates. Last fiddled with by tuckerkao on 20211111 at 03:55 

20211111, 14:12  #378  
"Viliam Furík"
Jul 2018
Martin, Slovakia
5×149 Posts 
Quote:
You are TFing a notasinteresting exponent in the 168M range to an extent that I have never done on exponents other than the 100M or 1G digit ones. 

20211111, 14:58  #379 
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
6098_{10} Posts 
Appropriate TF levels and P1 bounds are substantial functions of exponent and number of primality tests potentially saved. That is very basic information that has been publicly available for years or decades.
https://www.mersenne.ca/exponent/168286523 TF: +6 bits above recommended levels; 23281 vs 364 (~64. TIMES what made sense) Even if that was on an RTX30xx, at its exceptionally high ~50:1 "exchange rate" TF/DP hourly productivity ratio, giving 22917/50 = 458 GHD DP, it could have accomplished 40.% of a PRP/GEC/proof, something useful instead, in that wasted time. P1 134 GHD expended, vs ~29 recommended (and that assumes 2 tests saved); 134/29 = 4.62 TIMES recommended, reasonable, logical expenditure. Excess was 13429 = 105 GHD DP, for another waste equivalent to another ~9.2% of a PRP/GEC/proof in that time. Waste of resources = 49.2% of PRP duration. Do it twice, and enough has been wasted to about fully PRP/GEC/proofgen such a Mersenne number. At a more modest typical TF/DP "exchange rate", the waste is even larger. See also https://www.mersenne.ca/graphs/facto...M_20211111.png or the equivalent of https://www.mersenne.ca/cudalucas.php?model=706 for the GPU involved. (Access that by clicking on the GPU model name in https://www.mersenne.ca/cudalucas.php) Last fiddled with by kriesel on 20211111 at 15:18 
20211111, 16:21  #380 
Jan 2021
California
3·101 Posts 
You are free to do whatever you want with your hardware (or whatever hardware you are borrowing). But when you constantly talk about what you are doing, don't be surprised if people comment on it (sometimes negatively, more likely the more frequently you post). If you don't want the negative comments, don't post so much.

20211111, 19:02  #381  
Mar 2019
2×109 Posts 
Quote:


20211111, 20:32  #382 
Jun 2021
2^{2}·11 Posts 
it's not meant to be, as say mrs. F!

20211115, 22:21  #383 
"Tucker Kao"
Jan 2020
Head Base M168202123
2^{5}×3×7 Posts 
I finally found a factor that was greater than 2^100 > M168184823, 1 of the objective that my father wants me to achieve starting next month. If I can apply the larger P1 bounds which Kriesel not recommend using my next new PC, it's possible that I can find a factor larger than LaurV's gem which has been mentioned in 1 of the data threads.
Both M168184123 and M168184823 revealed their factors, so my list from post #321 is getting significantly shorter. Also there have 8 such exponents been factored up to 2^78 by Kriesel such as M168732503, but without the P1, so my next new CPU should come in handy for that. Last fiddled with by tuckerkao on 20211115 at 22:42 
20211115, 23:10  #384  
If I May
"Chris Halsall"
Sep 2002
Barbados
27C7_{16} Posts 
Quote:
My Father purchased for me the first Computer I could use at home. A TRS80 Model 1. I had to buy (with hard cash) my own Assembler, of course, to get down to the Assembly Language (about a hundred bucks at the local Radio Shack). A few years later my Father helped me buy my next computer. A Commodore 64. But, this time, I had to pay for it myself. Father helped with the "bridging", but this was *my* purchase. I worked *hard* with physical labor to pay off that debt. I miss my Father. He was a difficult man. But the discipline helped me learn how to stand alone. 

20211115, 23:50  #385 
"Viliam Furík"
Jul 2018
Martin, Slovakia
5·149 Posts 

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