2021 14d post processing reservations and results - Page 19

swellman · 2021-08-30, 17:28

Quote:

Originally Posted by Plutie

Would it be possible to for me to take 501__719_13m1?

Yes, quite possible. But you’ll need credentials from Greg who runs NFS@Home, unless you’ve already got them.

If you’re still interested I’ll contact you via PM.

richs · 2021-08-31, 13:55

Quote:

Originally Posted by richs

Taking 519__511_7m1

Code:

p70 factor: 5848154131191689267467694179951968309131812767388176684996493674814591
p80 factor: 53487690351394622212150053021845692715807845271076173219665934912819279028803491

Approximately 9 hours on 6 threads of a Core i7-10510U with 12 GB memory for a 3.26M matrix at TD=100.

Log attached and at https://pastebin.com/JXijWNbC

Factors added to factordb.

Plutie · 2021-09-01, 16:42

https://pastebin.com/cws9Vpq3

1hr solve with Ryzen 5 5600X, -t 12 (interestingly enough, msieve said it started LA with 32 threads.)

Code:

Wed Sep 1 12:24:24 2021 p66 factor: 835251703114664138903805818363298898165852843334338964427706930837
Wed Sep 1 12:24:24 2021 p84 factor: 247795720473845772532126989395273376306177110708302852431490576685216571436579323673

richs · 2021-09-01, 21:09

Quote:

Originally Posted by richs

Taking 575709019_23m1

Code:

p58 factor: 4312240442218107411934215116913778361305217663632804490281
p108 factor: 621963366116136291084199274574035422938677914793836688607419814153245743699520065579052475861945328614366719

Approximately 22 hours on 6 threads of a Core i7-10510U with 12 GB memory for a 4.80M matrix at TD=110.

Log attached and at https://pastebin.com/wxkxKvCr

Factors added to factordb.

richs · 2021-09-04, 15:08

Taking 417__011_3m1

richs · 2021-09-08, 00:57

Taking 184__151_5m1

unconnected · 2021-09-08, 23:58

C161_79_97 completed - nearly 5.5 hours on Tesla K80/P4 for 4.3M matrix (TD=140).

Code:

p65 factor: 28828779633629714746232507279378339304568987329836097491210549533
p97 factor: 1185168248619384757422491263883621255347347942771171906521602552051554141566065491071327103160459

I'm experimenting with msieve-gpu on Google Colab. LA didn't run with default settings due to "not enough memory" error, so I use "block_nnz=100000000" option. Unfortunately I'm on free account and managed to get only K80/P4 gpu's for ~3 hours/day.

https://pastebin.com/dvPxwsJ2

unconnected · 2021-09-09, 00:05

C157_79_87 completed - 24 hours for 4.8M matrix (TD=100)

Code:

p69 factor: 470334053701387388558622053730510085941350039911940492821333612624189
p89 factor: 10528298436721706770875683105253827798822788455415355624688896748407395125542180548032311

https://pastebin.com/y4YNyqHw

richs · 2021-09-11, 00:30

Something is not right with the relations or the .ini or .fb files for 417__011_3m1:

Code:

Fri Sep 10 16:56:43 2021  
Fri Sep 10 16:56:43 2021  
Fri Sep 10 16:56:43 2021  Msieve v. 1.53 (SVN 988)
Fri Sep 10 16:56:43 2021  random seeds: 7c4b4360 67ec101d
Fri Sep 10 16:56:43 2021  factoring 931716212649329827085826874632296805522376190752443111047033777427443503981234835282738781393247938253896381553901865467679801153870597073922973731405293 (153 digits)
Fri Sep 10 16:56:44 2021  searching for 15-digit factors
Fri Sep 10 16:56:44 2021  commencing number field sieve (153-digit input)
Fri Sep 10 16:56:44 2021  R0: -607288295848199450676009139407
Fri Sep 10 16:56:44 2021  R1: 204889130532497
Fri Sep 10 16:56:44 2021  A0: 17500403064728538394138027311449717866616
Fri Sep 10 16:56:44 2021  A1: 5584264633247370913975802344435818
Fri Sep 10 16:56:44 2021  A2: 292017629100948579858061139
Fri Sep 10 16:56:44 2021  A3: -25997407300505227152
Fri Sep 10 16:56:44 2021  A4: -203479838212
Fri Sep 10 16:56:44 2021  A5: 11280
Fri Sep 10 16:56:44 2021  skew 23852827.67, size 6.655e-015, alpha -8.500, combined = 3.359e-012 rroots = 5
Fri Sep 10 16:56:44 2021  
Fri Sep 10 16:56:44 2021  commencing relation filtering
Fri Sep 10 16:56:44 2021  setting target matrix density to 100.0
Fri Sep 10 16:56:44 2021  estimated available RAM is 12041.5 MB
Fri Sep 10 16:56:44 2021  commencing duplicate removal, pass 1
Fri Sep 10 16:56:44 2021  error -11 reading relation 0
Fri Sep 10 16:56:44 2021  error -11 reading relation 1
Fri Sep 10 16:56:44 2021  error -11 reading relation 2
Fri Sep 10 16:56:44 2021  error -11 reading relation 3
...
Fri Sep 10 17:11:15 2021  error -11 reading relation 2942819
Fri Sep 10 17:11:15 2021  error -11 reading relation 2942820
Fri Sep 10 17:11:15 2021  error -11 reading relation 2942821

Every relation is giving an error -11. I checked the .ini and .fb files, and they are the ones on the NFS@Home server.

Any ideas?

frmky · 2021-09-11, 07:15

This is odd. When the number was first created and moved into sieving, it had the following as the polynomial:

Code:

$ cat download/267/417__011_3m1.poly
n: 989163617066470014099816140104529067772498166299400837090638230533961107703370734574964910904703319468717321087072690489227697336349353632315164593791131
lss: 0
Y0: -389754269942125777022616522063
Y1: 1402575413814821
c0: 305974442857526606299730049987152237000
c1: 276756306175520282907688238818280
c2: -7458144245467064229404252
c3: -22651676006773394051
c4: 681810683016
c5: 109980
skew: 6511026.00
type: gnfs
rlim: 33500000
alim: 33500000
lpbr: 29
lpba: 29
mfbr: 58
mfba: 58
rlambda: 2.5
alambda: 2.5

However, by the time the first results were returned, the polynomial had been changed to

Code:

$ cat 417__011_3m1.poly
n: 931716212649329827085826874632296805522376190752443111047033777427443503981234835282738781393247938253896381553901865467679801153870597073922973731405293
skew: 23852827.67
lss: 0
type: gnfs
Y0: -607288295848199450676009139407
Y1: 204889130532497
c0: 17500403064728538394138027311449717866616
c1: 5584264633247370913975802344435818
c2: 292017629100948579858061139
c3: -25997407300505227152
c4: -203479838212
c5: 11280
# size 6.655e-15, alpha -8.500, combined = 3.359e-12 rroots = 5
# expecting poly E from 2.92e-12 to > 3.35e-12
rlim: 33500000
alim: 33500000
lpbr: 29
lpba: 29
mfbr: 58
mfba: 84
rlambda: 2.5
alambda: 3.4

However, since that change was made after it had been moved into the sieving stage (likely by moving it back to the queued stage, changing it, and moving it back to sieving again), BOINC sieved using the original polynomial.

swellman · 2021-09-11, 12:56

This is very strange. Looking back in the 14d queue management thread, it seems this job was proposed and I placed it in queue with no issues. However RichD noticed problems shortly after sieving started.

I don’t remember messing with the file once it was enqueued. No reason to do so. Very odd indeed.

2021-09-01, 16:42	#201
Plutie "Evan" Dec 2020 Montreal 2³×3² Posts	501__719_13m1 factored https://pastebin.com/cws9Vpq3 1hr solve with Ryzen 5 5600X, -t 12 (interestingly enough, msieve said it started LA with 32 threads.) Code: Wed Sep 1 12:24:24 2021 p66 factor: 835251703114664138903805818363298898165852843334338964427706930837 Wed Sep 1 12:24:24 2021 p84 factor: 247795720473845772532126989395273376306177110708302852431490576685216571436579323673

2021-09-08, 23:58	#205
unconnected May 2009 Russia, Moscow 2×5×277 Posts	C161_79_97 completed - nearly 5.5 hours on Tesla K80/P4 for 4.3M matrix (TD=140). Code: p65 factor: 28828779633629714746232507279378339304568987329836097491210549533 p97 factor: 1185168248619384757422491263883621255347347942771171906521602552051554141566065491071327103160459 I'm experimenting with msieve-gpu on Google Colab. LA didn't run with default settings due to "not enough memory" error, so I use "block_nnz=100000000" option. Unfortunately I'm on free account and managed to get only K80/P4 gpu's for ~3 hours/day. https://pastebin.com/dvPxwsJ2

2021-09-09, 00:05	#206
unconnected May 2009 Russia, Moscow 2×5×277 Posts	C157_79_87 completed - 24 hours for 4.8M matrix (TD=100) Code: p69 factor: 470334053701387388558622053730510085941350039911940492821333612624189 p89 factor: 10528298436721706770875683105253827798822788455415355624688896748407395125542180548032311 https://pastebin.com/y4YNyqHw

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2021-09-04, 15:08	#203
richs "Rich" Aug 2002 Benicia, California 2²·7·53 Posts	Taking 417__011_3m1

2021-09-08, 00:57	#204
richs "Rich" Aug 2002 Benicia, California 2²·7·53 Posts	Taking 184__151_5m1

2021-09-11, 12:56	#209
swellman Jun 2012 3,511 Posts	This is very strange. Looking back in the 14d queue management thread, it seems this job was proposed and I placed it in queue with no issues. However RichD noticed problems shortly after sieving started. I don’t remember messing with the file once it was enqueued. No reason to do so. Very odd indeed.