Linear algebra reservations, progress and results - Page 54

VBCurtis · 2016-01-13, 18:34

Quote:

Originally Posted by xilman

What are the true limits on the 14e queue? If the upper limit can be stretched there are six C166 and 28 <S252, of which 12 are < S251.
Paul

Ignorance is bliss- I recently did my first C165 and used 14e. It finished in about the time expected (extrapolated as 4x time for C155), using 32LP. I bet C166 and 167 are fine for the 14e queue, particularly if 32LP are used.

Stats from C165: Msieve E-score 6.67e-13, 265M raw rels produced a 10.3M matrix at density = 96. I can find special-q range sieved if interested.

xilman · 2016-01-13, 19:26

Quote:

Originally Posted by chris2be8

As far as I know all the holes in the Brent tables have had enough ECM run against them. Certainly none of the ones I factored were ECM misses.

@Jcrombie, did Prof Brent send you any details of how much ECM he had run against them?

Chris

PS. Should posts 580, 581 and this one (583) be in the queue management thread?

Quite possibly for 581. I'm never quite sure where to post.

unconnected · 2016-01-13, 22:23

Reserving C220_120_79 and C170_119_79.

swellman · 2016-01-13, 22:54

Quote:

Originally Posted by Xyzzy

It looks like we are about to run out of work to sieve.

http://escatter11.fullerton.edu/nfs/crunching.php

cough cough

Xyzzy · 2016-01-13, 23:23

Quote:

Originally Posted by swellman

cough cough

We only know how to edit the reservations and enter results. We have no idea how to enter new work.

swellman · 2016-01-14, 01:09

Reserving 11119_61_minus1.

frmky · 2016-01-14, 02:43

Quote:

Originally Posted by swellman

cough cough

Queued.

Dubslow · 2016-01-14, 03:26

Is there a particular reason for the use of gzip for compression? bzip2 has a rather better compression ratio (at a computational cost) while still being more-or-less widely available.

frmky · 2016-01-14, 07:36

Quote:

Originally Posted by Dubslow

Is there a particular reason for the use of gzip for compression? bzip2 has a rather better compression ratio (at a computational cost) while still being more-or-less widely available.

The results are compressed by the BOINC clients before they are returned to the server. The server just checks that they are valid compressed relations then concatenates them into the file you download.

Dubslow · 2016-01-14, 08:06

Quote:

Originally Posted by frmky

The results are compressed by the BOINC clients before they are returned to the server. The server just checks that they are valid compressed relations then concatenates them into the file you download.

I suppose that answers my question about whether or not the .gz format supports arbitrary concatenation.

Good to know that I can still grab relations that come in while I start the initial download.

fivemack · 2016-01-14, 10:37

Code:

Thu Jan 14 04:14:26 2016  p74 factor: 54052766629980734999562244122502065112987992580302950918724141982758469031
Thu Jan 14 04:14:26 2016  p87 factor: 538334666188011347785904608538080112624666237830477754503884561471369042454503441501091

17.8 hours for 6.57M density-120 matrix on 7 threads E5-2650v2

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
restarting nfs linear algebra	cubaq	YAFU	2	2017-04-02 11:35
Linear algebra at 600%	CRGreathouse	Msieve	8	2009-08-05 07:25
Linear algebra crashes	10metreh	Msieve	3	2009-02-02 08:34
Linear algebra proof	Damian	Math	8	2007-02-12 22:25
Linear algebra in MPQS	R1zZ1	Factoring	2	2007-02-02 06:45

2016-01-13, 22:23	#586
unconnected May 2009 Russia, Moscow A21₁₆ Posts	Reserving C220_120_79 and C170_119_79.

2016-01-14, 01:09	#589
swellman Jun 2012 2²·773 Posts	Reserving 11119_61_minus1.

2016-01-14, 03:26	#591
Dubslow Basketry That Evening! "Bunslow the Bold" Jun 2011 40<A<43 -89<O<-88 3·29·83 Posts	Is there a particular reason for the use of gzip for compression? bzip2 has a rather better compression ratio (at a computational cost) while still being more-or-less widely available.