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-   -   Linear algebra reservations, progress and results (https://www.mersenneforum.org/showthread.php?t=20023)

VictordeHolland 2016-04-02 13:04

Taking [B]6_317_minus_5_317[/B]

swellman 2016-04-02 19:26

Reserving [B]11_236_plus_10_236[/B] for post processing.

RichD 2016-04-03 02:33

C162_OP_t500 appears to be factored last week.

On a different note, I will be out of town for a couple weeks after completing my two assignments.
Meaning I will not take on anymore work for awhile because it would lead to delayed results reporting.

jasonp 2016-04-03 03:38

[QUOTE=Xyzzy;430481]We are having some trouble with C231_117_97.

With ~110M relations it could not build a matrix. We sent it back for an additional 10M relations. Now, with TD=100, it finally works, but the run time is stupid long for a 30-bit job. (They normally are under 200 hours for us.)
[/QUOTE]
Is multithreading turned on?

Xyzzy 2016-04-03 07:06

[QUOTE=jasonp;430636]Is multithreading turned on?[/QUOTE]We assume it is, because we can run on multiple cores.

We sent it back for another 10M relations.

:mike:

Dubslow 2016-04-03 08:00

[QUOTE=jasonp;430636]Is multithreading turned on?[/QUOTE]

[QUOTE=Xyzzy;430643]We assume it is, because we can run on multiple cores.

We sent it back for another 10M relations.

:mike:[/QUOTE]

Jason is right, you forgot the [c]-t[/c] option.

Compare the output from [URL="http://mersenneforum.org/showpost.php?p=430481&postcount=745"]your most recent post[/URL] with this [URL="http://mersenneforum.org/showpost.php?p=425896&postcount=669"]earlier post of yours[/URL]:

Recent issue:
[code]saving the first 48 matrix rows for later
matrix includes 64 packed rows
matrix is 12442319 x 12442544 (4794.6 MB) with weight 1223961181 (98.37/col)
sparse part has weight 1132443772 (91.01/col)
using block size 8192 and superblock size 294912 for processor cache size 3072 kB
commencing Lanczos iteration
memory use: 4068.0 MB
linear algebra at 0.0%, ETA 713h26m[/code]

Older non-issue:
[code]Wed Feb 10 14:06:40 2016 saving the first 48 matrix rows for later
Wed Feb 10 14:06:43 2016 matrix includes 64 packed rows
Wed Feb 10 14:06:46 2016 matrix is 20344510 x 20344735 (7917.1 MB) with weight 1985767002 (97.61/col)
Wed Feb 10 14:06:46 2016 sparse part has weight 1871966901 (92.01/col)
Wed Feb 10 14:06:47 2016 using block size 8192 and superblock size 294912 for processor cache size 3072 kB
Wed Feb 10 14:08:43 2016 commencing Lanczos iteration[B] (2 threads)[/B]
Wed Feb 10 14:08:43 2016 memory use: 6798.9 MB
Wed Feb 10 14:14:03 2016 linear algebra at 0.0%, ETA 1160h 1m[/code]

Xyzzy 2016-04-03 08:12

[QUOTE=Dubslow;430647]Jason is right, you forgot the [c]-t[/c] option.[/QUOTE]We use one core for 30-bit jobs. They are usually under 200 hours with one core.

:mike:

RichD 2016-04-03 15:29

6_316_plus_5_316 factored
 
1 Attachment(s)
163.5 hours to solve a 12.7M matrix on Core-i7, -t 4 using target_density=112. (TD=116 failed)
[CODE]prp80 factor: 20206957651913041022106918338431611081608753047535017044690679163933015220179833
prp98 factor: 10779363587393581426022753409639415729646552704321518431728759202432038225102184178297087696791833[/CODE]

fivemack 2016-04-03 18:52

I'll run C200_150_148 on seven threads on an eight-core IVB Xeon

(31.7M matrix with target_density=125; ETA ~700 hours, so first week of May)

swellman 2016-04-03 23:44

C225_144_86
 
1 Attachment(s)
[code]
prp111 factor: 671342408532585030413375163596357949676226138287753713705683541106134186386986989011053481247060842244138502361
prp114 factor: 493212617024213634262709401296724719952303885031291960809123296301627333886125449694064551485662436628094626913033
[/code]

unconnected 2016-04-04 07:45

1 Attachment(s)
C213_140_41 completed: 18 hours for 5.3M matrix with TD=130 (msieve -t 12 on slightly busy Dual Xeon E5-2620).

[CODE]P49 = 3475165686373875903666718871788291265014575235709
P80 = 29232665309692611631824455117308296871373561392983191483135367795849212115521363
P85 = 8559252530563782928742711462092688493947080608035399704981804587293254547082488527013[/CODE]


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