20230123, 16:15  #815  
"Gary"
May 2007
Overland Park, KS
5×17×139 Posts 
Quote:
For the sieve, using sr2sieve's expected factors found, which is much more accurate than the actual factors found for determining removal rate, it came up with a removal rate of one every 332 secs. For the LLR test, I ran it at 60% of the nrange on about a median k: 10068*897^1899831 to be specific. After running for a couple minutes, the single iteration rate was 0.88 ms. Total iterations was ~1863550. So expected total test time was ~1640 secs. So a rough estimate of optimum sieve depth for this machine is somewhat less than 1640 / 332 = 4.94 multiplied by the current sieve depth of 15e12. That comes out to ~74e12. That method is always somewhat high until you get within roughly 20% of the optimum. I'm guessing optimum will be ~65e12 to 70e12 at this point. I would sieve to 60e12 and then do the calculation once more. If you have a GPUbased sieve process, you may want to use your removal rate instead. I'm not asking you to do this. I can just post it as a partially sieved file. My suggestion if you feel like running a sieve on a file that needs more sieving: Run R60. The file is on the reservations page. That was Storm's first effort and it was only sieved to 1e12. It is for the same nrange of 100k250k. At 1e12, it needs more small Prange sieving than R897 does at this point but overall will likely be a smaller job. It's a much smaller base with fewer k's remaining so optimum sieve depth will be lower and it will likely get some testing interest in the near future once it is fully sieved. Last fiddled with by gd_barnes on 20230123 at 16:18 

20230123, 18:06  #816  
Random Account
Aug 2009
Not U. + S.A.
100111100010_{2} Posts 
Quote:
Give me a few days and I might pick out something else to take a crack at. Thank you to everyone for your kind words. Update: If no one is running R42, I will take it. The reservation page indicates it has been ran to N=200e3. I will run it to 300e3. I will wait a day to start just in case anyone recommends any modifications. Last fiddled with by storm5510 on 20230123 at 18:34 

20230123, 19:07  #817  
"Gary"
May 2007
Overland Park, KS
5×17×139 Posts 
Quote:
I have a better idea: Pick up your partial sieve for R60 off of the reservations page and use it as input to your process to sieve it more. It's only sieved to 1e12 and needs plenty more. The optimum sieve depth for it is likely quite a bit less than for R897. As for R42, if you really want to sieve it instead, please sieve 200e3 to 500e3. It is inefficient to sieve a range where the nmax is less than double the nmin. We usually go for more than double or even triple or more. We have often sieved 100e3 to 500e3 for files that we send to Yoyo since they can sieve so deeply very quickly. 

20230123, 23:48  #818  
Random Account
Aug 2009
Not U. + S.A.
2·5·11·23 Posts 
Quote:
I will refrain from using "run" in the future. 

20230124, 08:03  #819 
"Gary"
May 2007
Overland Park, KS
2E27_{16} Posts 

20230124, 15:05  #820 
"Curtis"
Feb 2005
Riverside, CA
2×3^{2}×313 Posts 
I'll give Storm a bit of time to decide what he wants to sieve next before I jump on R897. If R60 or R42 are shortish, he may wish to resume R897 in a few weeks.

20230124, 16:00  #821 
Random Account
Aug 2009
Not U. + S.A.
2·5·11·23 Posts 

20230124, 16:28  #822 
"Gary"
May 2007
Overland Park, KS
5·17·139 Posts 
I posted the R897 sieve on the reservations page with a note that it is partially sieved. So it can be picked up again anytime or not at all for a long time. :)

20230125, 00:32  #823  
Random Account
Aug 2009
Not U. + S.A.
2×5×11×23 Posts 
Quote:
Just a thought... 

20230125, 04:16  #824 
"Curtis"
Feb 2005
Riverside, CA
2×3^{2}×313 Posts 

20230125, 05:19  #825 
Mar 2006
Germany
2,999 Posts 

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Sieving Drive all base 2/4 k's worked by CRUS  gd_barnes  Conjectures 'R Us  143  20141021 23:55 
Some CRUS stats  vmod  Conjectures 'R Us  213  20140228 21:23 
What are your CRUS plans?  rogue  Conjectures 'R Us  35  20131109 09:03 
CRUSlike sieving challenge  CRGreathouse  Puzzles  24  20111028 18:30 
how high will CRUS go  TimSorbet  Conjectures 'R Us  1  20101108 20:50 