mersenneforum.org Sierp. base 6 team sieve
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 2008-03-25, 20:28 #1 mdettweiler A Sunny Moo     Aug 2007 USA (GMT-5) 624910 Posts Sierp. base 6 team sieve Note to all: at this point (p=21T) we are well past optimal sieve depth for the entire range up to n=400K. As such, no more sieving will be needed for quite a while, and I'll lock this thread until then. (Actually, we'll probably end up starting a new thread for future sieving after that point, anyway...) Hi all, Gary and I have decided to do a team sieve for all the remaining Sierpinski base 6 k's, similar to the doublecheck sieving that we did at NPLB. Everything is just the same as with the doublecheck sieving, except that there's a lot less k's, and of course that the k's and ranges are different. The sieve will be for the range of n=100K-400K. As we progress, we will calculate the optimal depth for various ranges (i.e. 100K-200K, 200K-300K, etc.) and break them off for PRPing as soon as the sieve reaches that depth. Reservations of all sizes are welcome--feel free to take whatever you feel you can complete in a reasonable amount of time. (Please give status reports at least every two weeks, preferably more frequently). The sieve file can be downloaded here. It contains one file, "sr2data.txt", which is our sieve file. Extract it to the folder containing your copy of sr2sieve (if you don't have the latest version already, get it here--be sure to get version 1.7.6 or later, since a big speed boost was added in that version!). Then, make a new text file called "sr2work.txt". Open it in a text editor, and enter your range on the first line, like in this example (for 10G-20G): Code: 10-20 You can queue up additional ranges by adding more lines, each containing another range in that same format. When your range is done, email the factors.txt file to me at bugmesticky@googlemail.com (as an attachment, please, not in the body of the message). Then, report the range as complete here in this thread, and, if you wish, reserve another range and start the process over again! Code: Range Reserved by Status ------------------------------------ 8210G-21000G KriZp complete 8200G-8210G CedricVonck complete 8000G-8200G grobie complete 7000G-8000G KriZp complete 6510G-7000G gd_barnes complete 6500G-6510G Anonymous complete 6000G-6500G KriZp complete 5200G-6000G em99010pepe complete 4700G-5200G gd_barnes complete 3500G-4700G em99010pepe complete 3400G-3500G gd_barnes complete 3250G-3400G grobie complete 3000G-3250G gd_barnes complete 2500G-3000G KriZp complete 2000G-2500G tnerual complete 1750G-2000G Anonymous complete 1500G-1750G gd_barnes complete 1200G-1500G KriZp complete 1000G-1200G tnerual complete 750G-1000G KriZp complete 500G-750G gd_barnes complete 210G-500G KriZp complete 200G-210G Anonymous complete 125G-200G KriZp complete 70G-125G gd_barnes complete 20G-70G KriZp complete 0-20G Anonymous complete As we break off ranges of n, they will be added to the 3rd Drive. All k's are included in the drive for n>100K. Let's get rolling! Last fiddled with by mdettweiler on 2009-10-26 at 18:28 Reason: added note about no more sieving needed
 2008-03-25, 23:59 #2 mdettweiler A Sunny Moo     Aug 2007 USA (GMT-5) 3·2,083 Posts Reserving 10G-20G.
 2008-03-26, 00:13 #3 KriZp     Feb 2007 33·5 Posts reserving 20-40
2008-03-26, 00:15   #4
mdettweiler
A Sunny Moo

Aug 2007
USA (GMT-5)

3·2,083 Posts

Quote:
 Originally Posted by KriZp reserving 20-40
Thanks for helping out, and welcome to Conjectures 'R Us!

 2008-03-26, 01:19 #5 KriZp     Feb 2007 33×5 Posts thanks for the warm welcome, you guys seem like a friendly bunch :) I'll take another 30G to keep my Athlon64 from running out of work while I sleep. I'm sieving @1500kp/s. reserving 40G-70G
2008-03-26, 02:59   #6
mdettweiler
A Sunny Moo

Aug 2007
USA (GMT-5)

3×2,083 Posts

Quote:
 Originally Posted by KriZp thanks for the warm welcome, you guys seem like a friendly bunch :) I'll take another 30G to keep my Athlon64 from running out of work while I sleep. I'm sieving @1500kp/s. reserving 40G-70G
Okay, great!

And while I'm at it, 10G-20G is finished.

 2008-03-26, 03:06 #7 mdettweiler A Sunny Moo     Aug 2007 USA (GMT-5) 3×2,083 Posts A new sieve file is now available, sieved to p=20G. You can get it here; I also updated the link in the first post of this thread. Note: In case anyone was wondering, yes, you can switch to a newer sieve file in the middle of a range--just replace sr2data.txt with the new one, and shut down/restart sr2sieve.
2008-03-26, 04:56   #8
gd_barnes

May 2007
Kansas; USA

3·5·673 Posts

Quote:
 Originally Posted by Anonymous A new sieve file is now available, sieved to p=20G. You can get it here; I also updated the link in the first post of this thread. Note: In case anyone was wondering, yes, you can switch to a newer sieve file in the middle of a range--just replace sr2data.txt with the new one, and shut down/restart sr2sieve.
Very good. I didn't know that. I just always started an entirely new sieve. That'll become necessary as we find some more primes for n<100K and you're able to remove those k's from the file.

Gary

2008-03-26, 05:10   #9
mdettweiler
A Sunny Moo

Aug 2007
USA (GMT-5)

11000011010012 Posts

Quote:
 Originally Posted by gd_barnes Very good. I didn't know that. I just always started an entirely new sieve. That'll become necessary as we find some more primes for n<100K and you're able to remove those k's from the file. Gary
Well, remember, when sr2sieve uses the checkpoint.txt file, it essentially starts a new range when it's restarted--the only difference is that it includes the entire range, and all the factors already found, in the numbers it gives for factors found and % done, etc.

 2008-03-26, 08:46 #10 gd_barnes     May 2007 Kansas; USA 276F16 Posts My home dual-core Athlon will be done with its range for NPLB sieving on Thursday morning and I'll put its 2 cores on this. Just to make the ranges nice and uneven, I'll reserve P=70G-125G. And to keep things complicated, maybe I'll split it between the 2 cores as 70G-97.45G and 97.45G-125G. Thanks KriZp for chipping in with a good-sized range! This is a fun and important base. It's the lowest reasonably doable base that is or has not being done by other projects, it has a good # of k's remaining for a team drive, and it isn't too difficult to find primes for like base 5 and base 19 are. Edit: Anon, we may as well include all k's in the team drive for n>100K. There has been little interest in individiual-k reservations for n<100K. I'm going to have to hassle with testing the current 3 individual k's that are not in the team drive for n<100K for n=60K-100K before we begin n>100K and I'd rather not mess with doing that in the future. So you don't need to fool around with splitting out the individual k's for n>100K when posting files for LLRing or PRPing or PFGWing or whatever people want to use. lol Gary Last fiddled with by gd_barnes on 2008-03-26 at 09:02
 2008-03-26, 10:17 #11 KriZp     Feb 2007 33×5 Posts 20-70 complete reserving 125-200

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