20201123, 16:55  #78 
Sep 2009
3^{4}×5^{2} Posts 
f20_193p1 has built a matrix. About 49 hours remain so I should have a result on Wednesday or Thursday depending on how many square root steps it takes.
Chris 
20201123, 22:22  #79  
Jun 2012
5^{2}·7·17 Posts 
Quote:
Failed to build a matrix with TD of 120, attempting 114 now. I’ll keep dropping TD until this job goes into LA. 

20201124, 12:04  #80 
Jun 2012
101110011111_{2} Posts 
23_193m1
23_193m1 finally made it into LA @TD=108, ETA 918 hrs (~Jan 1).

20201124, 12:22  #81 
May 2009
Russia, Moscow
4773_{8} Posts 
C172_785232_11530.dat.gz is broken, running gzrecover.

20201124, 18:01  #82  
"Curtis"
Feb 2005
Riverside, CA
127C_{16} Posts 
Quote:
Or, we could do some sieving locally. Let's knock off at least a week from that matrix solvetime I'm game for an experiment about the tradeoff between sieving and matrix here, e.g. does a machineweek of sieving shorten the matrix by a week? 

20201124, 18:13  #83  
Aug 2005
Seattle, WA
3242_{8} Posts 
Quote:


20201124, 18:26  #84 
Sep 2008
Kansas
110011110011_{2} Posts 
It is a 31.5 bit job or 31/32 hybrid. I think around 270M unique might be the sweet spot.
See https://www.mersenneforum.org/showpo...9&postcount=32. 
20201124, 18:43  #85  
Aug 2005
Seattle, WA
2·3·283 Posts 
Quote:


20201124, 19:19  #86 
Jun 2012
5^{2}×7×17 Posts 
23_193m1
Well, based on results to date, adding 20M+ Q should get this job to 270M uniques. I’ll keep bumping Q if yield degrades along the way but I suspect this job will reach that goal by the weekend.
Then I’ll start at TD=120 and drop by 4 until the job enters LA. We can explore unique rels vs TD and the resulting ETA. If more rels are warranted then I’ll bump Q some more and repeat the process. Shall I proceed? 
20201124, 19:48  #87 
"Curtis"
Feb 2005
Riverside, CA
11174_{8} Posts 
Definitely.
I think I'll do a little 10kQ testsieve to see how much CPU time the extra sieving takes, to compare to matrix time saved. The new queues and new organization rules are working nicely, but I remain interested in conserving boinc resources so that we can get more numbers factored. This sort of test helps give us a sense of how much public computation we're trading for our savings in private matrixsolving computation. 
20201124, 19:59  #88 
Jun 2012
5^{2}·7·17 Posts 
For the record, Q range was 20190M. Just raised the upper end to 210M.

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