20150327, 15:27  #122  
Bamboozled!
"πΊππ·π·π"
May 2003
Down not across
97·113 Posts 
Quote:
The final state of play here is Code:
Found 540343842 unique, 93906329 duplicate (14.8% of total), and 0 bad relations. Largest dimension used: 1842 of 3000 Average dimension used: 1649.0 of 3000 Terminating program at Fri Mar 27 15:02:50 2015 Any remaining relations you may have will probably be ignored. Feel free to send them in over the next few hours but whether Tom uses them is entirely up to him. I'll disable the anonftp service some time this weekend. Thanks all! Paul 

20150328, 08:33  #123 
(loop (#_fork))
Feb 2006
Cambridge, England
1929_{16} Posts 
The 63GB of relations data has been successfully transferred to my computer, using a 150Mbitpersecond transfer link comprising a Hitachi 4TB USB3 hard disc drive and a Claud Butler hybrid commuting bicycle, powered by tasty monkfish curry. The last batch of my local sieving should finish Sunday morning and I'll start the linear algebra then.
Last fiddled with by fivemack on 20150328 at 08:33 
20150328, 08:59  #124 
Bamboozled!
"πΊππ·π·π"
May 2003
Down not across
97×113 Posts 
The NAS has been shutdown here and everything deleted, freeing up 257G.
All the files are still on the backup server put they'll probably get weeded out before too much longer because its disk is now 60% full and I'd prefer not to have important backups fail on me. 
20150329, 11:11  #125 
(loop (#_fork))
Feb 2006
Cambridge, England
14451_{8} Posts 
Uniquedwithinthemselves relation counts from my side:
Code:
114111349 200248.u 5262696 248252.partial.u 12248201 382388.u 12203201 388394.u 23702457 410422.u 15785956 422430.u 15649041 430438.u 19365333 440450.u 218328234 total Code:
Sun Mar 29 03:08:51 2015 found 143702717 hash collisions in 758568029 relations Sun Mar 29 03:09:09 2015 added 1219004 free relations Sun Mar 29 03:09:09 2015 commencing duplicate removal, pass 2 Sun Mar 29 03:15:17 2015 found 71113210 duplicates and 688673823 unique relations Code:
Sun Mar 29 07:38:35 2015 commencing 2way merge Sun Mar 29 07:39:57 2015 reduce to 122026455 relation sets and 78650729 unique ideals Sun Mar 29 07:39:57 2015 commencing full merge Sun Mar 29 07:54:49 2015 memory use: 6533.1 MB Sun Mar 29 07:54:57 2015 found 53090605 cycles, need 48358929 Sun Mar 29 07:55:09 2015 weight of 48358929 cycles is about 5803766052 (120.01/cycle) Sun Mar 29 11:26:47 2015 matrix is 48357161 x 48358929 (22297.4 MB) with weight 6307619226 (130.43/col) Sun Mar 29 11:26:47 2015 sparse part has weight 5313189641 (109.87/col) Sun Mar 29 11:46:25 2015 filtering completed in 3 passes Sun Mar 29 11:46:33 2015 matrix is 48292695 x 48292895 (22280.7 MB) with weight 6302508887 (130.51/col) Sun Mar 29 11:46:33 2015 sparse part has weight 5309538775 (109.94/col) Sun Mar 29 11:51:29 2015 matrix starts at (0, 0) Sun Mar 29 11:51:34 2015 matrix is 48292695 x 48292895 (22280.7 MB) with weight 6302508887 (130.51/col) Sun Mar 29 11:51:34 2015 sparse part has weight 5309538775 (109.94/col) Sun Mar 29 11:51:34 2015 saving the first 48 matrix rows for later Sun Mar 29 11:51:42 2015 matrix includes 64 packed rows Sun Mar 29 11:51:47 2015 matrix is 48292647 x 48292895 (21411.1 MB) with weight 5439342793 (112.63/col) Sun Mar 29 11:51:47 2015 sparse part has weight 5129863044 (106.22/col) Sun Mar 29 12:01:26 2015 linear algebra at 0.0%, ETA 1928h54m Last fiddled with by fivemack on 20150329 at 11:12 
20150427, 17:19  #126  
Nov 2003
2^{2}×5×373 Posts 
Quote:
Woe! Woe! Woe! It is a sad state we are in. Woe is us.... Finishing the M991 sieving means that for the first time in a very long time, there are no Cunningham composites from among the first 5 holes in any table being sieved. I can not recall the last time this happened. BTW, Are Bai, Verser, and Texas State ever going to finish their reserved numbers? 

20150427, 18:06  #127  
Aug 2005
Seattle, WA
1782_{10} Posts 
Quote:


20150427, 18:12  #128 
Nov 2003
2^{2}·5·373 Posts 

20150428, 13:46  #129 
Jun 2005
lehigh.edu
2^{10} Posts 
RE: regular Cunninghams from first five holes being sieved
Another less visible feature of the first five, 10,359 C208 was tested to 24.4t55=c t65 before being selected by NFS@Home; and there's also the reserved number 2,2218M C206 tested to 20.6t55=c .8t65. Just counting Lehigh curves. I'm just finishing a run through c200c220 plus smaller first five holes, with twelve more at .8t65 and thirteen more at/above t65. Looks like another twentyfive at 3t60 =c 15t55, with Sam having done another t60. I'm not claiming that we've reliably removed p60's, especially among the first five above C280; but I haven't found any below p60 this year, with three in p63p67. Bruce 
20150428, 16:23  #130  
Nov 2003
2^{2}·5·373 Posts 
Quote:
However, it doesn't really matter if we miss a few p60's. What matters is whether the composite can be done faster (less work) with NFS than running additional ECM (which has a low probability of success). 

20150429, 16:40  #131  
Jun 2005
lehigh.edu
2^{10} Posts 
Quote:
Quote:
Quote:
2t60 = 10t55 on each, to 5t60 = t65, but still would have needed luck to get either one. To get halfway up on p70p65, for p67.5, maybe two more t65s, and still only 62% chance of success; maybe one of them would have fallen. An additional 60t55, each, from the 3t60 I did. Probably still better to run those curves on less tested numbers? Bruce 

20150429, 16:58  #132 
Nov 2003
1D24_{16} Posts 

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