mersenneforum.org

mersenneforum.org (https://www.mersenneforum.org/index.php)
-   NFS@Home (https://www.mersenneforum.org/forumdisplay.php?f=98)
-   -   2018 14e post processing reservations and results (https://www.mersenneforum.org/showthread.php?t=23354)

VictordeHolland 2018-09-08 06:45

35803_47_minus1 factors
 
1 Attachment(s)
[QUOTE=VictordeHolland;495592]Taking
[B]35803_47_minus1[/B]
(35803^47-1)[/QUOTE]
[code]p65 factor: 47863225418449145183578895689894143723897166334366701029984495773
p145 factor: 6313983173861036307569055054354661250449471586739388709144630992094491528516505223331458583349374130742173903081477771848231371361698692306587441[/code]4.5M matrix (I didn't specify TD for this small job)
factors uploaded to factordb
(truncated) log attached and at: [URL]https://pastebin.com/5cYmegKZ[/URL]

VictordeHolland 2018-09-08 07:00

Taking [B]C201_264xx617_11 [/B]
[ a.ka. C201 cofactor of 2642270235905971097617^11-1 or Phi_11(Phi_3(Phi_3(Phi_11(1009)/617/4647193/23223849323621)/463)/3/43)/991/22626021023) ]

VictordeHolland 2018-09-08 11:52

1 Attachment(s)
[QUOTE=VictordeHolland;495617]Taking [B]C201_264xx617_11 [/B]
[ a.ka. C201 cofactor of 2642270235905971097617^11-1 or Phi_11(Phi_3(Phi_3(Phi_11(1009)/617/4647193/23223849323621)/463)/3/43)/991/22626021023) ][/QUOTE]
[code]p83 factor: 22330463505945875571947312337327462756856230383085071443050937519801921389939086603
p119 factor: 33127811624368200208426217651723629261873679231618754737608609449682515417947551872068873029424789961314417272285576913
[/code]3.3M Matrix

Truncated log attached and at: [URL]https://pastebin.com/sFhdBRhm[/URL]

VictordeHolland 2018-09-08 11:54

Taking
C149_M17_k63
and
C214_563xx601_13

RichD 2018-09-08 14:45

Phi_29(Phi_3(25457)/13) factored
 
[CODE]p106 factor: 4672601456018195178699471914588665537722988275510203132077093911934729158719497712508274838757971243020753
p110 factor: 14003825680574946026452519246879959936758227574144910522162981447781462580995284001498760348577141562692776537[/CODE]
179M unique relations built a 9.56M matrix using TD=120 (TD=122 failed).
Solve time about 57 hours.

Log at: [url]https://pastebin.com/3TkTWMkv[/url]

swellman 2018-09-08 15:24

[QUOTE=debrouxl;495614]Yesterday evening, there were already enough relations to post-process C200_137xx419_11. Therefore, I started it on an older Sandy Bridge computer, using whatever msieve version was built there (it has a 1.54 version number), hoping that the post-processing job would finish overnight. So it did:
[code]p75 factor: 575096815484514516529363734854004453576272394771178752806174030887511108923
p125 factor: 55295450542880669107690429589138994334579927460433361976834442065149676755257256084690498859415155468950092795401922011102461[/code]

There are now over 60M raw relations, with an estimated 20+M remaining. The full dataset could be an exercise in filtering a severely oversieved dataset, but we don't need it anymore...

[url]https://pastebin.com/Z32M9jeZ[/url][/QUOTE]

This may have been me - I bumped Q in a few cases, though I tried to avoid any jobs currently in post processing. Sorry if I added unnecessary relations to this job.

Regardless we should probably just move this factorization to a completed status. Anyone interested in exploring an oversieved dataset?

VictordeHolland 2018-09-08 17:46

[QUOTE=swellman;495645]Anyone interested in exploring an oversieved dataset?[/QUOTE]
In my experience oversieved creates more problems than undersieved.
Undersieved is solved easily by just sieving a few special Q yourself untill you have a doable matrix (or queue some on the grid).
With oversieved you have to play with the "filter_max_rels=xxxxxxxx" parameter and that usually means wasted sieving time or a less than ideal matrix.

swellman 2018-09-08 19:33

Agreed. Oversieving is a waste of everyone’s time and resources.

I’ll mark the offending (and factored) job to completed status.

RichD 2018-09-08 19:46

[QUOTE=swellman;495645]This may have been me - I bumped Q in a few cases, though I tried to avoid any jobs currently in post processing. Sorry if I added unnecessary relations to this job.[/QUOTE]

It was partially my fault. It was the easiest remaining job in the t600 file. If you look at the trial sieving it needed less than a 20M range. The yield was over 3:1. It probably could have been run as a 28-bit job but the grid wouldn't have accepted it. Oops! :smile:

swellman 2018-09-08 20:21

[QUOTE=RichD;495672]It was partially my fault. It was the easiest remaining job in the t600 file. If you look at the trial sieving it needed less than a 20M range. The yield was over 3:1. It probably could have been run as a 28-bit job but the grid wouldn't have accepted it. Oops! :smile:[/QUOTE]

No worries - the vampire is now dead and buried (factored and marked complete). Let us not speak/write of it again! ;-)

VictordeHolland 2018-09-09 08:04

C149_M17_k63 factors
 
1 Attachment(s)
C149_M17_k63 factors

[code]p60 factor: 421729762466342675550640734553067398526560954479857825391511
p89 factor: 68219347018508177853201160841000256132043180235989461322258217194533258958225144761276463[/code]3.6M matrix
Factors uploaded to factordb.
(Truncated) log attached and at: [URL]https://pastebin.com/sRPRmw5n[/URL]


All times are UTC. The time now is 21:48.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.