|
2011-11-23, 20:40
|
#892 |
|
Nov 2011
19 Posts |
Would it be possible to reserve a range of 1K n on Riesel 320 (to n=26K). I'd like to see how quickly I can do these before I go in for a bigger reservation.
|
|
|
|
2011-11-24, 08:45
|
#893 | |
May 2007
Kansas; USA
32·13·89 Posts |
Quote:
Yes, sure. Go ahead and test the range of n=25K-26K for Riesel base 320 to see how long it will take. I'll mark you down for it. When done, please attach the lresults.txt or pfgw.out file and/or feel free to reserve a larger n-range if you think you would like to. Gary |
|
|
|
|
|
2011-11-24, 08:46
|
#894 |
|
May 2007
Kansas; USA
32×13×89 Posts |
Serge has reported completion of S461 to n=250K. The base is released.
|
|
|
|
|
2011-11-24, 11:39
|
#895 |
|
Nov 2011
19 Posts |
The range of 1K took approx 30mins (15 mins sieve, 15 mins prp). The range up to 50K will take about 1 day (?) So can I reserve up to 50K.
|
|
|
|
|
2011-11-24, 14:16
|
#896 | |
|
Account Deleted
"Tim Sorbera"
Aug 2006
San Antonio, TX USA
17·251 Posts |
Quote:
Here's some  that you might find to be useful information.  Note that sieving is more efficient when you search over a larger range. As a rule of thumb, you should aim for a sieve removal rate that equals the PRP test time of a candidate 60% (IIRC) through the range (e.g. for 26K-50K, 60% through is n=40400, so time your computer doing a PRP, or a portion of one, at a k in the middle of the group to get your target removal rate). Due to the nature of CRUS searches, in which you stop searching a k once a prime is found for that k, the maximum n range you usually want to sieve at once is about twice the current search limit, so sieving 26K-50K would work well. Also remember that the time per candidate will roughly quadruple when the n doubles. Given that, a naive extrapolation (30 min * 24) would suggest 12 hours, so 1 day seems like a decent estimate. |
|
|
|
|
|
2011-11-24, 16:57
|
#897 |
|
Nov 2011
1910 Posts |
They were largely the numbers I was looking at, though i wasn't sure of what time to sieve up to, so thanks. I suppose though that the time to sieve to the length of the top candidates wouldnt be too great at this level though.
I wasn't sure about the complexity of prping, but i figured it wad unlikely to be much worse than n^2. Of course, if i find a prime, ill be done much quicker 
|
|
|
|
|
2011-11-24, 18:16
|
#898 |
|
May 2007
Kansas; USA
32·13·89 Posts |
G30ffr3y,
OK, I'll put you down as reserved for R320 to n=50K. If using PFGW, please be sure and use the -l switch. That will write out the results to pfgw.out. If using LLR, it will automatically write out the lresults.txt file. We need one of those files when you are done. Thanks, Gary |
|
|
|
|
2011-11-25, 19:02
|
#899 |
May 2008
Wilmington, DE
22×23×31 Posts |
Reservations
Reserving the following 1kers to n=200K.
R258 R321 R328 R333 S328 S341 S476 S480 |
|
|
|
|
2011-11-25, 21:35
|
#900 | |
|
May 2007
Kansas; USA
101000101011012 Posts |
Quote:
|
|
|
|
|
|
2011-11-25, 21:47
|
#901 | |
|
May 2008
Wilmington, DE
22·23·31 Posts |
Quote:
Note: I'll reserve R333 to 250K because the posted sieve file goes that high. |
|
|
|
|
|
2011-11-26, 17:14
|
#902 | |
May 2009
Russia, Moscow
50418 Posts |
Quote:
|
|
|
|
 |
| Thread Tools | |
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Bases 6-32 reservations/statuses/primes | gd_barnes | Conjectures 'R Us | 1398 | 2021-08-06 12:49 |
| Riesel base 3 reservations/statuses/primes | KEP | Conjectures 'R Us | 1108 | 2021-08-04 18:49 |
| Bases 501-1030 reservations/statuses/primes | KEP | Conjectures 'R Us | 3920 | 2021-08-04 14:39 |
| Bases 33-100 reservations/statuses/primes | Siemelink | Conjectures 'R Us | 1693 | 2021-08-01 08:40 |
| Bases 101-250 reservations/statuses/primes | gd_barnes | Conjectures 'R Us | 908 | 2021-08-01 07:48 |
