Linear algebra reservations, progress and results

[RichD]

A few problems while processing this number.
Guessing about 260 hours to solve a 17.7M matrix using -t 4 with an attempt at TD=128 but a retry was preformed. Not sure what the final figures are since there was at least one power outage. Anyway, the results are:

p69 factor: 811884529212156121214196053224656649627421583977579650693247575913281
p72 factor: 410052737060507499868085991922786692682851786985574701364922782002592497
p74 factor: 85660759058095833197360874851652786516606665723271609061872559260331035143

https://pastebin.com/yU2c5BXU

[swellman]

Finally factored. Reported to fdb, now a C186 blocker. Log attached.

p86 factor: 47128585108733309220305950275981748827064241088820215576424964728151368836716731278797
p105 factor: 625117287849127517677481176326464356064314285017067719232733781151482927049946251298164613294418106954579

[Dubslow]

Originally Posted by Dubslow

Going back a few pages, I don't think anyone's claimed C207_127_103 have they? I'll start downloading, please alert me if anyone's started it.

Oof, these 32 bit jobs aren't quite comfortable for me. Doable, but I'd prefer to stay away from them if there's lesser numbers available at any given time.

This will give an indication about how much time the job spent paused while I was using the CPU for other things:

saving the first 48 matrix rows for later
matrix includes 64 packed rows
matrix is 20462235 x 20462483 (9940.6 MB) with weight 2560114117 (125.11/col)
sparse part has weight 2401253973 (117.35/col)
using block size 8192 and superblock size 786432 for processor cache size 8192 kB
commencing Lanczos iteration (8 threads)
memory use: 8582.4 MB
linear algebra at 0.0%, ETA 467h42m462483 dimensions (0.0%, ETA 467h42m)    
checkpointing every 50000 dimensions62483 dimensions (0.0%, ETA 465h54m)    
^Znear algebra completed 919304 of 20462483 dimensions (4.5%, ETA 553h46m)    
[1]+  Stopped                 nice -n 19 ./msieve -t 8 -v -nc "target_density=140"
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^Znear algebra completed 2472456 of 20462483 dimensions (12.1%, ETA 533h15m)    
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^Znear algebra completed 2599720 of 20462483 dimensions (12.7%, ETA 534h 4m)    
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^Znear algebra completed 3369323 of 20462483 dimensions (16.5%, ETA 503h25m)    
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^Znear algebra completed 5148531 of 20462483 dimensions (25.2%, ETA 434h57m)    
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^Znear algebra completed 5208247 of 20462483 dimensions (25.5%, ETA 435h32m)    
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^Znear algebra completed 5217601 of 20462483 dimensions (25.5%, ETA 438h23m)    
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^Znear algebra completed 6028491 of 20462483 dimensions (29.5%, ETA 411h 9m)    
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^Znear algebra completed 6121803 of 20462483 dimensions (29.9%, ETA 409h31m)    
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^Znear algebra completed 6571101 of 20462483 dimensions (32.1%, ETA 397h46m)    
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^Znear algebra completed 6585518 of 20462483 dimensions (32.2%, ETA 399h15m)    
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^Znear algebra completed 6614317 of 20462483 dimensions (32.3%, ETA 399h36m)    
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^Znear algebra completed 6674018 of 20462483 dimensions (32.6%, ETA 399h40m)    
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^Znear algebra completed 6807587 of 20462483 dimensions (33.3%, ETA 396h46m)    
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^Znear algebra completed 7561395 of 20462483 dimensions (37.0%, ETA 373h52m)    
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^Znear algebra completed 8166503 of 20462483 dimensions (39.9%, ETA 358h51m)    
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^Znear algebra completed 8348078 of 20462483 dimensions (40.8%, ETA 353h48m)    
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^Znear algebra completed 9063278 of 20462483 dimensions (44.3%, ETA 332h24m)    
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^Znear algebra completed 9169535 of 20462483 dimensions (44.8%, ETA 331h19m)    
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^Znear algebra completed 10791781 of 20462483 dimensions (52.7%, ETA 283h23m)    
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^Znear algebra completed 10851223 of 20462483 dimensions (53.0%, ETA 282h56m)    
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^Znear algebra completed 11645172 of 20462483 dimensions (56.9%, ETA 259h56m)    
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^Znear algebra completed 12253162 of 20462483 dimensions (59.9%, ETA 241h29m)    
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^Znear algebra completed 12370512 of 20462483 dimensions (60.5%, ETA 239h29m)    
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^Znear algebra completed 12418019 of 20462483 dimensions (60.7%, ETA 238h35m)    
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^Znear algebra completed 13628009 of 20462483 dimensions (66.6%, ETA 204h 4m)    
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^Znear algebra completed 13642699 of 20462483 dimensions (66.7%, ETA 204h48m)    
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^Znear algebra completed 13666981 of 20462483 dimensions (66.8%, ETA 204h25m)    
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^Znear algebra completed 13752426 of 20462483 dimensions (67.2%, ETA 202h 6m)    
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^Znear algebra completed 14337937 of 20462483 dimensions (70.1%, ETA 185h53m)    
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^Znear algebra completed 14360975 of 20462483 dimensions (70.2%, ETA 186h46m)    
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^Znear algebra completed 14410098 of 20462483 dimensions (70.4%, ETA 185h32m)    
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^Znear algebra completed 15044536 of 20462483 dimensions (73.5%, ETA 166h52m)    
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^Znear algebra completed 15126547 of 20462483 dimensions (73.9%, ETA 164h50m)    
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^Znear algebra completed 16914532 of 20462483 dimensions (82.7%, ETA 108h 1m)    
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^Znear algebra completed 17020535 of 20462483 dimensions (83.2%, ETA 104h52m)    
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^Znear algebra completed 17428691 of 20462483 dimensions (85.2%, ETA 92h36m)     
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^Znear algebra completed 17535658 of 20462483 dimensions (85.7%, ETA 89h40m)    
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^Znear algebra completed 17580932 of 20462483 dimensions (85.9%, ETA 88h33m)    
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^Znear algebra completed 18086092 of 20462483 dimensions (88.4%, ETA 73h 5m)    
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bill@Gravemind ~/nfsathome $ fg
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^Znear algebra completed 18143768 of 20462483 dimensions (88.7%, ETA 71h24m)    
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bill@Gravemind ~/nfsathome $ fg
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^Znear algebra completed 18194617 of 20462483 dimensions (88.9%, ETA 69h58m)    
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^Znear algebra completed 18265171 of 20462483 dimensions (89.3%, ETA 67h57m)    
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^Znear algebra completed 18703414 of 20462483 dimensions (91.4%, ETA 54h19m)    
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^Znear algebra completed 18751201 of 20462483 dimensions (91.6%, ETA 52h58m)    
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^Znear algebra completed 18778747 of 20462483 dimensions (91.8%, ETA 52h19m)    
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^Znear algebra completed 18793410 of 20462483 dimensions (91.8%, ETA 51h55m)    
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^Znear algebra completed 19087893 of 20462483 dimensions (93.3%, ETA 42h51m)    
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^Znear algebra completed 19128346 of 20462483 dimensions (93.5%, ETA 41h42m)    
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^Znear algebra completed 19209292 of 20462483 dimensions (93.9%, ETA 39h12m)    
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^Znear algebra completed 19344109 of 20462483 dimensions (94.5%, ETA 35h 0m)    
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bill@Gravemind ~/nfsathome $ fg
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^Znear algebra completed 19364351 of 20462483 dimensions (94.6%, ETA 34h26m)    
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bill@Gravemind ~/nfsathome $ fg
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^Znear algebra completed 19488299 of 20462483 dimensions (95.2%, ETA 30h37m)    
[1]+  Stopped                 nice -n 19 ./msieve -t 8 -v -nc "target_density=140"
bill@Gravemind ~/nfsathome $ fg
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^Znear algebra completed 19565979 of 20462483 dimensions (95.6%, ETA 28h12m)    
[1]+  Stopped                 nice -n 19 ./msieve -t 8 -v -nc "target_density=140"
bill@Gravemind ~/nfsathome $ fg
nice -n 19 ./msieve -t 8 -v -nc "target_density=140"
linear algebra completed 20462152 of 20462483 dimensions (100.0%, ETA 0h 0m)    
lanczos halted after 323591 iterations (dim = 20462233)
recovered 36 nontrivial dependencies
BLanczosTime: 2318311

commencing square root phase
handling dependencies 1 to 64
reading relations for dependency 1
read 10228704 cycles
cycles contain 34784332 unique relations
read 34784332 relations
multiplying 34784332 relations
multiply complete, coefficients have about 1126.34 million bits
initial square root is modulo 112927
sqrtTime: 4600
p67 factor: 3398763995171122824120179050326217414667453030211158652848817655499
p141 factor: 112306976144915038264003108733540864936755090193991619457418444263498170842357156117977046263180604163664909303378276882406134973409172831701
elapsed time 648:33:15

Full log:

[swellman]

Originally Posted by VBCurtis

TD 128 built a 50.05M matrix with weight of sparse part 5.79G.
TD 136 built a 49.2M matrix with weight of sparse part 6.0G.

The ETAs match within a few dozen hours (136 is less than 1% higher after 100k dimensions, but it is running now so I left it). ~9000hr.

I finally got this one into LA, ETA is 4200 hours on my rig, or mid-January. Nothing to do but sit back and let it bake.

[fivemack]

C194_69655517_31 ETA is Wednesday 2 August

(18.57M matrix at density 130)

[RichD]

I'll take C205_852460489981_19 next.

[swellman]

Reserving C216_144_59.

[richs]

Originally Posted by richs

Reserving C162_11040_10042 (14e). I won't be able to start it until July 27.

LA started last night after 9 hours of filtering (had a number of "matrix not dense enough, retrying" messages). ETA the evening of July 30.

[RichD]

54 hours to solve an 8.9M matrix with -t 4, using TD=120 (TD=128 failed).

p82 factor: 6537204205084674294703481584493502380423466318496614959984113790116747866788584321
p124 factor: 1042143608837959636915220743087764687714991473494839035895276907793104632961349715079269355173454868238212723637196998197823

https://pastebin.com/EvhAEhtV

[RichD]

I'll take C165_189343400041_19 next.

[richs]

Originally Posted by richs

Reserving C162_11040_10042 (14e). I won't be able to start it until July 27.

p55 factor: 4609968388506527032675973524484679813092265532884399401
p108 factor: 144513108182915811284820185095307419752626843173380906751002350502453302960246863520901415533595962909700357

75 hours on 6 threads i7-5500U with 8 GB memory for a 6.98M matrix at TD = 130. Log attached and at https://pastebin.com/JBtgPF48