20210112, 20:49  #881  
Jun 2012
Boulder, CO
2·3·41 Posts 
Quote:


20210112, 21:13  #882 
Apr 2020
167 Posts 
Another suggestion: if the huge volume of relations is posing problems for msieve, then you could try turning this into a 33/35 job by removing all the relations with 36bit algebraic factors using grep. Granted, you might need to sieve a bit more, but it ought to be simpler than finding and fixing a bug.

20210112, 22:06  #883 
"Curtis"
Feb 2005
Riverside, CA
2^{9}×3^{2} Posts 
Or, you could just let CADO run the filtering and see how big that matrix is. I think msieve generally creates a matrix slightly bigger than cado; so if CADO's matrix comes out a tolerable size, you can stop sieving and focus on getting the dataset through msieve.
Though, Charybdis' last suggestion might mean sieving a little more anyway if msieve proves to be the problem. 
20210113, 00:02  #884  
Jun 2012
Boulder, CO
2·3·41 Posts 
Quote:
In any event, here's where things currently stand with the latest msieve run, 2.1B unique's and target_density=110: Code:
Tue Jan 12 12:21:48 2021 found 11 duplicates and 2110664553 unique relations Tue Jan 12 12:21:48 2021 memory use: 31280.0 MB Tue Jan 12 12:21:49 2021 reading ideals above 1591017472 Tue Jan 12 12:21:49 2021 commencing singleton removal, initial pass Tue Jan 12 16:06:06 2021 memory use: 41024.0 MB Tue Jan 12 16:06:07 2021 reading all ideals from disk Tue Jan 12 16:07:00 2021 memory use: 39808.5 MB Tue Jan 12 16:08:59 2021 commencing inmemory singleton removal Tue Jan 12 16:10:33 2021 begin with 2110664552 relations and 2029607823 unique ideals Tue Jan 12 16:27:46 2021 reduce to 992995519 relations and 761340257 ideals in 20 passes Tue Jan 12 16:27:46 2021 max relations containing the same ideal: 35 Tue Jan 12 16:28:38 2021 reading ideals above 720000 Tue Jan 12 16:28:38 2021 commencing singleton removal, initial pass 

20210114, 21:39  #885 
Jun 2012
Boulder, CO
11110110_{2} Posts 
msieve keeps getting wedged... Trying again with 2.1B uniques and target_density=90.

20210115, 12:24  #886 
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
2·2,897 Posts 
Would jasonp be able to give any advice on how to get past this blockage in the merge stage? I don't know whether he is reading this thread.

20210115, 14:59  #887 
"Bo Chen"
Oct 2005
Wuhan,China
163 Posts 
I'd suggest to do the 'NFS Filtering' step 50 hours first , to look what will happen then. Since the relations count is 2000 million, it will meed more patience than 1000 million.
Last fiddled with by wreck on 20210115 at 15:02 
20210115, 15:06  #888 
"Bo Chen"
Oct 2005
Wuhan,China
163 Posts 
Repeate messages.
Some background date: 1. filter step for 2,1076+ snfs 324 (688M relations) : 15 hours. 2. filter step for 10,459 snfs 306 (737M relations) : 22 hours. Last fiddled with by wreck on 20210115 at 15:12 
20210115, 16:48  #889 
Jun 2012
Boulder, CO
2·3·41 Posts 
Thanks for the tip! I'll try to let this run (with 2.1B uniques and TD=90) sit for a while.

20210118, 21:49  #890 
Jun 2012
Boulder, CO
2·3·41 Posts 
Code:
Fri Jan 15 12:21:24 2021 commencing inmemory singleton removal Fri Jan 15 12:22:01 2021 begin with 590365520 relations and 594141896 unique ideals Fri Jan 15 12:35:29 2021 reduce to 585813821 relations and 580608996 ideals in 21 passes Fri Jan 15 12:35:29 2021 max relations containing the same ideal: 155 Fri Jan 15 12:37:14 2021 relations with 0 large ideals: 307095 Fri Jan 15 12:37:14 2021 relations with 1 large ideals: 215009 Fri Jan 15 12:37:14 2021 relations with 2 large ideals: 1852650 Fri Jan 15 12:37:14 2021 relations with 3 large ideals: 10607404 Fri Jan 15 12:37:14 2021 relations with 4 large ideals: 38306704 Fri Jan 15 12:37:14 2021 relations with 5 large ideals: 90474854 Fri Jan 15 12:37:14 2021 relations with 6 large ideals: 141486075 Fri Jan 15 12:37:14 2021 relations with 7+ large ideals: 302564030 Fri Jan 15 12:37:14 2021 commencing 2way merge 
20210118, 22:23  #891 
"Carlos Pinho"
Oct 2011
Milton Keynes, UK
37×131 Posts 
Maybe get in touch with Greg from NFS@Home to see if he can give any support or advise?!

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