20211104, 04:49  #474  
"Curtis"
Feb 2005
Riverside, CA
13·397 Posts 
Quote:
So, before reserving a range for a newtoyou project, acquire a sieve file to see how many tests it will take to complete the reservation. If one doesn't exist, you might ask in the forum how big a job will be Gary is quite good with these estimates. If nobody has an estimate, you can sieve for a day, count candidates left, and reduce by 1020% to reflect what a full sieving effort would reduce out of the file. 

20211104, 07:15  #475 
May 2007
Kansas; USA
2965_{16} Posts 
Adding a little more info.
CRUS has evolved to the point where there are no easy or short reservations. All of the lowhanging fruit has been well searched. That is by design. I would suggest having at least 4 cores running fulltime nonstop to make a reservation on the project. 8 cores is better. It's very easy to way underestimate the time it takes to complete a reservation. On our reservations pages there are many sieve files. All are fully sieved unless otherwise noted. Pick one at your choosing and consider a small nrange portion. Find a k/n pair that is at about 60% of the nrange in which you wish to search. So if you are choosing n=100K200K pick a test at n=~160K. Run LLR or PFGW on that test. Multiply the test time by the number of tests in your chosen range. That will give you your total CPU time. Divide by the number of cores that you will be running on the range to give you the amount of calendar time needed. Also see our recommended list. I would suggest avoiding bases on that list unless you have > ~10 cores running full time. Those are our higher priority bases. Last fiddled with by gd_barnes on 20211104 at 07:17 
20211104, 14:17  #476  
"Jiahao He"
May 2018
China
2^{2}·3·5 Posts 
Quote:
I would like to apologise: this is the first time I have participated in this project and many aspects were not well thought out, which turned into a very embarrassing situation. Also, it is clear from the text alone that Mr Barnes' advice is very practical, thank you for your selflessness! 

20211104, 14:19  #477 
"Jiahao He"
May 2018
China
2^{2}×3×5 Posts 
Also, thanks to Mr Curtis's guidance.

20211104, 16:51  #478 
"AMD YES!"
Jan 2020
Bellevue, WA
2·5·7 Posts 

20211104, 20:02  #479  
May 2007
Kansas; USA
10,597 Posts 
Quote:
Quote:


20211104, 21:31  #480 
"AMD YES!"
Jan 2020
Bellevue, WA
2·5·7 Posts 

20211111, 14:03  #481 
May 2004
FRANCE
246_{16} Posts 
Sierpinski odd n's testing
Hi,
K=9267 is now tested up to n = 13,500,823 ; no prime found... I am continuing with this input file sent to me by Gary. Regards, Jean 
20211113, 07:45  #482 
"Alexander"
Nov 2008
The Alamo City
2×389 Posts 
I don't remember if Gary said anything about this previously, but have the even k's been tested/accounted for in the R2 2nd conjecture? I did not test them when I initialized my set of data.

20211113, 17:10  #483 
May 2007
Kansas; USA
10,597 Posts 

20211121, 08:53  #484 
Sep 2011
Germany
BED_{16} Posts 
R2 odd/evenn tested to n=8M (6.658M)
nothing found, 6 remain Results emailed  Base released 
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