[QUOTE=wombatman;358702]ETA on the C168 is ~108 hours. And that's with the target density of the matrix at 100![/QUOTE]

Impressive performance! How many threads are you running? Is this on an i7?

8 threads on a Core i7, yes. It uses a little over 5GB of memory!

[QUOTE=wombatman;358702]ETA on the C168 is ~108 hours. And that's with the target density of the matrix at 100![/QUOTE]

I'm not quite sure whether you're complaining that this is a long time or impressed that this is a short time, because increasing target density usually makes things faster (if you had enough relations to get a matrix built at the higher density).

An NFS@home (so well-oversieved) C178 was 95 hours running msieve-1.52 (SVN945) under 64-bit Linux on my stock-speed i7/4770 with target density 70:

[code]
Sun Sep 22 22:45:16 2013 weight of 13120698 cycles is about 918487032 (70.00/cycle)
Sun Sep 22 22:59:40 2013 matrix is 13120526 x 13120698 (3944.6 MB) with weight 1222719217 (93.19/col)
Sun Sep 22 23:03:39 2013 linear algebra at 0.0%, ETA 103h12m
[/code]

I still had the relations, so refiltering with target density 100, running on same hardware:
[code]
Sun Nov 10 15:44:16 2013 weight of 11580698 cycles is about 1158315404 (100.02/cycle)
Sun Nov 10 17:27:09 2013 matrix is 11580525 x 11580698 (4662.0 MB) with weight 1424440785 (123.00/col)
Sun Nov 10 17:31:19 2013 linear algebra at 0.0%, ETA 84h58m
[/code]

A bit more memory, but a lot less runtime

Several of us are finding 31 bit NFS@Home GNFS factoring jobs of this size take 180-200 hours to complete LA. Wombatman has [url=http://www.mersenneforum.org/showthread.php?t=18725]compiled a version of Msieve[/url] that seems to be considerably faster.

Admittedly not an extensive study but a promising start.

I plan to run some 30 bit SNFS NFS@Home jobs using wombatman's executable. These sized jobs have been taking 25-30 hours to complete LA in the past. Hoping to see a substantial improvement.

I was mostly expressing surprise at the large jump from 30-bit to 31-bit. The 30-bit one I ran before was completed in ~1 day. I'll be interested to see how much of a difference the target density makes on your system. Thanks for checking!

[QUOTE=fivemack;358921]I'm not quite sure whether you're complaining that this is a long time or impressed that this is a short time, because increasing target density usually makes things faster (if you had enough relations to get a matrix built at the higher density).

An NFS@home (so well-oversieved) C178 was 95 hours running msieve-1.52 (SVN945) under 64-bit Linux on my stock-speed i7/4770 with target density 70:

[code]
Sun Sep 22 22:45:16 2013 weight of 13120698 cycles is about 918487032 (70.00/cycle)
Sun Sep 22 22:59:40 2013 matrix is 13120526 x 13120698 (3944.6 MB) with weight 1222719217 (93.19/col)
[/code]

I've still got the relations so am trying refiltering at target_density=100, and will update this post in probably six hours when the filtering is done.[/QUOTE]

Reserving GW_4_369
 

If it is still unclaimed.

GC_5_318 is currently in LA, should finish tonight.

Thanks.

Reserving GW_5_318
 

C168_127_110 is almost ready, now in square root fase.
Taking GW_5_318 next.

Just an update--C168_130_119 is 50% done on the linear algebra. It would be going faster, but I use my laptop when I'm at work, so it doesn't get to churn through as much...

Still, only a few days to go.

C168_127_110 factors
 

[B]C168_127_110[/B]
[CODE]prp65 factor: 37792525645009215672640814114905288002695134234191638876505642649
prp104 factor: 13726515009404365290893989999446372257366451228738644541888215061872548011642399835314991189895341089667[/CODE]

GC_5_318
 

[code]prp90 factor: 184763462141961298781835300446977817122734239690607168398305798472772898852528335132566597
prp123 factor: 808169483508868374406392455841213056787193069554340217585858124624893209801050341692036365491419721857836553682367085563193
[/code]

[QUOTE=swellman;358925]
I plan to run some 30 bit SNFS NFS@Home jobs using wombatman's executable. These sized jobs have been taking 25-30 hours to complete LA in the past. Hoping to see a substantial improvement.[/QUOTE]

Data point: LA of GW_4_369 had an ETA of 15 hours with 8 threads on my i7. It will finish in a few hours.