Linear algebra for L1421 on Haswell:

Sat Aug 3 10:58:30 2013 Msieve v. 1.52 (SVN 929M)
Sat Aug 3 12:56:45 2013 matrix is 14266218 x 14266443 (4100.2 MB) with weight 998547821 (69.99/col)
Sat Aug 3 12:57:21 2013 commencing Lanczos iteration (4 threads)
Sat Aug 3 12:57:21 2013 memory use: 3447.8 MB
Sat Aug 3 12:58:11 2013 linear algebra at 0.0%, ETA 125h37m

So just over five days. I'm also running an 11M matrix on the Opteron machine, which is

Sat Aug 3 06:36:13 2013 Msieve v. 1.52 (SVN 929M)
Sat Aug 3 11:35:29 2013 matrix is 11218061 x 11218241 (3380.3 MB) with weight 996049229 (88.79/col)
Sat Aug 3 11:42:46 2013 commencing Lanczos iteration (6 threads)
Sat Aug 3 11:42:46 2013 memory use: 410.6 MB <- one of eight slices
Sat Aug 3 11:43:25 2013 linear algebra at 0.0%, ETA 76h12m

reserve GC_6_270
 

Thank you for the information Thomas.

Can I please reserve GC_6_270? Could somebody please let me know who I email the results to?

Thanks

[QUOTE=Speedy51;348655]Thank you for the information Thomas.

Can I please reserve GC_6_270? Could somebody please let me know who I email the results to?

Thanks[/QUOTE]Me please! [email]paul@leyland.vispa.com[/email] and please let me know your real name so that I can give you appropriate credit at [url]http://www.leyland.vispa.com/numth/factorization/cullen_woodall/cw.html[/url]

This is the case for all the GC_n_xyz and GW_n_xyz numbers.

Paul

L1421 done
 

[code]
Sat Aug 3 11:30:11 2013 found 60357791 hash collisions in 259767534 relations
Sat Aug 3 11:54:15 2013 begin with 196586687 relations and 163580104 unique ideals
Sat Aug 3 11:55:29 2013 reduce to 132007953 relations and 92776447 ideals in 14 passes
Sat Aug 3 12:39:50 2013 weight of 14269506 cycles is about 999221031 (70.02/cycle)

Sat Aug 3 12:54:07 2013 matrix is 14269329 x 14269506 (4294.6 MB) with weight 1236636321 (86.66/col)
Sat Aug 3 12:54:07 2013 sparse part has weight 968839183 (67.90/col)
Sat Aug 3 12:55:51 2013 filtering completed in 2 passes
Sat Aug 3 12:55:53 2013 matrix is 14266266 x 14266443 (4294.4 MB) with weight 1236561120 (86.68/col)
Sat Aug 3 12:55:53 2013 sparse part has weight 968817749 (67.91/col)
Sat Aug 3 12:56:41 2013 matrix starts at (0, 0)
Sat Aug 3 12:56:42 2013 matrix is 14266266 x 14266443 (4294.4 MB) with weight 1236561120 (86.68/col)
Sat Aug 3 12:56:42 2013 sparse part has weight 968817749 (67.91/col)
Sat Aug 3 12:56:42 2013 saving the first 48 matrix rows for later
Sat Aug 3 12:56:44 2013 matrix includes 64 packed rows
Sat Aug 3 12:56:45 2013 matrix is 14266218 x 14266443 (4100.2 MB) with weight 998547821 (69.99/col)
Sat Aug 3 12:56:45 2013 sparse part has weight 932178330 (65.34/col)
Sat Aug 3 12:56:45 2013 using block size 8192 and superblock size 786432 for processor cache size 8192 kB
Sat Aug 3 12:58:11 2013 linear algebra at 0.0%, ETA 125h37m
Thu Aug 8 17:54:27 2013 lanczos halted after 225596 iterations (dim = 14266218)
Thu Aug 8 17:54:38 2013 recovered 39 nontrivial dependencies
Thu Aug 8 17:54:38 2013 BLanczosTime: 450773
Thu Aug 8 18:52:47 2013 sqrtTime: 3489
Thu Aug 8 18:52:47 2013 prp66 factor: 187135096790799742853110071581053657006161608942878250693113063919
Thu Aug 8 18:52:47 2013 prp147 factor: 969279888905395714856174853514885688011728076054013611511541927626188405801565742969188882434282822696398294430972791432140271020816531877725741939
[/code]

May I reserve L1827?

[QUOTE=xilman;348660]Me please! [EMAIL="paul@leyland.vispa.com"]paul@leyland.vispa.com[/EMAIL] and please let me know your real name so that I can give you appropriate credit at [URL]http://www.leyland.vispa.com/numth/factorization/cullen_woodall/cw.html[/URL]

This is the case for all the GC_n_xyz and GW_n_xyz numbers.

Paul[/QUOTE]
Thanks Paul. My real name is Jarod McClintock

C203_125_51
6375*(5^25)^6 + (51^21)^6 = 1910750658792*C203

C229_125_81
125*(5^40)^6 + 9*(3^83)^6 = 6306078046*C229

Both survived 7600@43M.

C211_127_90 post processing
 

I'll take it if no one else has. Can someone PM the download instructions to me?

Do you just need factors posted here or are the log files required as well?

Thanks.

[quote=fivemack]May I reserve L1827?[/quote]
I suppose you can reserve L1827, although it's not my area. I see no other reservation on the crunching_e page.

[QUOTE=swellman;348890]I'll take it if no one else has.[/QUOTE]
There was no other reservation, reserved to you.

[quote]Can someone PM the download instructions to me?[/quote]
Could someone else send him ? I'm using another login/password pair myself, AFAICT :smile:

[quote]Do you just need factors posted here or are the log files required as well?[/quote]The log files are always interesting, but in no way mandatory :smile:

Ok, I finally have enough results to post. I ran most of these with:
msieve -v -t X -nc2 "skip_matbuild=1"
Where X is the number of threads I was testing. I would delete the .chk and .bak.chk files before each run.
These times are only the BLanczosTime value (in seconds), nothing else.
The computer is a dual Xeon E5-2687W with 64GB of DD3-1600 ram, hyper-threading is turned off.
For some strange reason, the first time I ran through with 12, 14, and 16 threads, it took a lot longer than the second time I ran them.
Nothing else was running on the computer. The OS is Windows 7 Pro 64-bit using Brian's svn927 build of msieve.
The following shows an msieve log snippet showing the characteristics of this matrix.
Below that is the table showing the BLanczosTime (in seconds) for each number of threads.
You can see how I ran 12, 14, and 16 two times.
It looks like 13 threads is the winner on this machine to solve an 8.83M^2 matrix in 18h25m.
[CODE]
commencing linear algebra
skipping matrix build
matrix starts at (0, 0)
matrix is 8830805 x 8830983 (2692.1 MB) with weight 833487913 (94.38/col)
sparse part has weight 599756073 (67.91/col)
saving the first 48 matrix rows for later
matrix includes 64 packed rows
matrix is 8830757 x 8830983 (2587.2 MB) with weight 664939915 (75.30/col)
sparse part has weight 589918881 (66.80/col)
using block size 8192 and superblock size 1966080 for processor cache size 20480 kB
commencing Lanczos iteration (X threads)
memory use: 2110.0 MB

T | BL time | Skip Mat Build
---|---------|------
4 | 195259 | yes
6 | 98016 | yes
8 | 80205 | no
9 | 76663 | yes
10 | 71181 | yes
11 | 68044 | yes
12 | 67405 | yes | 91616 (*1) skip mat build
13 | 66323 | yes
14 | 67283 | yes | 81532 (*1) skip mat build
15 | 69686 | yes
16 | 69429 | yes | 78535 (*2) full run start to finish

*1 = BLanczosTime for the first time I ran with this number of threads. I did use skip_matbuild for these.
*2 = Very first run where I had msieve run the whole computation from start to finish.
[/CODE]
And here are the logs in case anyone would like to see the gory details.

C244_129_82
 

I will have a couple opportunities later this week to download (15 hrs) this file.
If no one minds the delay I would like to reserve this number.

[QUOTE=RichD;349369]I will have a couple opportunities later this week to download (15 hrs) this file.
If no one minds the delay I would like to reserve this number.[/QUOTE]
Are you aware that all the work for the number has not been sent out yet? Also you may or may not be aware it has been announced on the NFS homepage that there is a planned campus network outage from Friday, August 16, at 7pm to Saturday, August 17, at 7am Pacific Time