Current status

[bdodson]

Originally Posted by R.D. Silverman

I am now sieving 5,314+.

Any info on 5,311-?????

The servers are distributing 5,311+ if you regard that as info. -bd

[bdodson]

Originally Posted by R.D. Silverman

The linear algebra for 2,1490L is in progress. 2,1526L has been sieved.
I am now sieving 5,314+.

Any info on 5,311-?????

Now I'm hearing I was the last to switch from 5,311+ to 5,313-. -bd

[R.D. Silverman]

Originally Posted by bdodson

Now I'm hearing I was the last to switch from 5,311+ to 5,313-. -bd

The entire Cunningham base 2 table is nearly finished through 768 bits.
Here is one more result:

2,1490L C154 = p56.p99

p56 = 13922047453015798095930702744666309471614785005795919241

The filtering for 2,1526L is in progress and 5,314+ should finish
sieving in a day or two. I will then do 6,281-.

[R.D. Silverman]

Originally Posted by bdodson

Now I'm hearing I was the last to switch from 5,311+ to 5,313-. -bd

To whomever is running NFSNET:

It would be nice to get *some* feedback as to the work being done.
Have 5,311- and 5,311+ finished sieving? How far along is 5,313-?

etc. etc

I take at least a little time to let people know what I am doing and
the numbers that I plan to do.

It would be appreciated if you could do the same.

My status:

5,314+ is about 25% of the way through the LA. (a 16 day effort)
6,281- is a little more than 50% sieved. I will be able to finish this.

I lose access to my current resources in 2 weeks.

[Pi Rho]

My current range for 5,313- ends at line 5916516, so I would guess sieving is about 15 - 20% complete.

[bdodson]

Originally Posted by R.D. Silverman

To whomever is running NFSNET:

It would be nice to get *some* feedback as to the work being done.
Have 5,311- and 5,311+ finished sieving? How far along is 5,313-?

etc. etc

I'm not the person (or persons) running NFSNET, but the switching
I referred to --- first from 311- then from 311+ --- occurred after enough
filtering to "know that we have done enough sieving" (from Richard's
email 10/7). I asked for an estimate on time to finish 313- and 313+,
for which the reply was c. 1 month each, with a need to pick a harder
number to run next, so as to "give us time to catch up on the post
processing" (10/8). -Bruce

[R.D. Silverman]

Originally Posted by bdodson

I'm not the person (or persons) running NFSNET, but the switching
I referred to --- first from 311- then from 311+ --- occurred after enough
filtering to "know that we have done enough sieving" (from Richard's
email 10/7). I asked for an estimate on time to finish 313- and 313+,
for which the reply was c. 1 month each, with a need to pick a harder
number to run next, so as to "give us time to catch up on the post
processing" (10/8). -Bruce

2,772+ or 2, 779+ would be nice.......

I suggested these base 5 numbers in the first place
because a request was made for *easier* numbers.

[bdodson]

Originally Posted by R.D. Silverman

2,772+ or 2, 779+ would be nice.......

I suggested these base 5 numbers in the first place
because a request was made for *easier* numbers.

Difficulty 232.4 and 234.5. Seems like if we're running something
in that range, the first hole on the 3+ list at 3,499+ with difficulty
238 would be a nice follow-up to 3,479+. -bd

[Wacky]

Originally Posted by R.D. Silverman

To whomever is running NFSNET:

It would be nice to get *some* feedback as to the work being done.
Have 5,311- and 5,311+ finished sieving? How far along is 5,313-?

It would be nice to have enough time to do more than occassionally check that the servers are still issuing assignments :) Unfortunately, "life" has presented me with significant demands that are making that difficult. I have reported, at least through Bruce, the relevant milestones. Thus far, they are unchanged.

I requested some "easier" project suggestions because I expected our sieving resources to drop significantly about 6 weeks ago. That drop (over 30%) may still occur at any time. Bruce has also been able to provide increased compute power.

Both 5,311- and 5,311+ have been sieved and I thought that I had a matrix of a bit more than 5M rows ready to process. Unfortunately, when I attempted to run the Lanzcos program, it immediately aborted with a segfault. I have also been running into problems with the filtering giving unexplained internal errors even though -checknorms shows all of the input to be valid. Paul suggested that it might be a memory problem, but I have been unable to get one to show up on a diagnostic.

I'm presently trying to get enough memory onto another machine to see if I can make any progress.

So the present status is that we have collected an adequate number of relations to produce matricies on the order of 5M and I have filtered down to 16.5M relations with an excess of about 710K.

I need to hand one of these off to someone who can help finish it. As Paul can tell you, the filtering files are getting to be rather large and we are having to be careful that we don't run into filesystem limits.

The sieving on 5,313- is at 50% and the current rate projects that we MIGHT have enough done by Halloween. OTOH, I am finding that these projects seem to need a bit more oversieving to get the same matrix size that we were previously getting. So I still project that we will need a new project by Thanksgiving.

[xilman]

Originally Posted by Wacky

Both 5,311- and 5,311+ have been sieved and I thought that I had a matrix of a bit more than 5M rows ready to process. Unfortunately, when I attempted to run the Lanzcos program, it immediately aborted with a segfault. I have also been running into problems with the filtering giving unexplained internal errors even though -checknorms shows all of the input to be valid. Paul suggested that it might be a memory problem, but I have been unable to get one to show up on a diagnostic.

Largely because I don't have any better ideas as to what may be wrong, given a list of the symptoms.

Originally Posted by Wacky

I need to hand one of these off to someone who can help finish it. As Paul can tell you, the filtering files are getting to be rather large and we are having to be careful that we don't run into filesystem limits.

I may be able to help, though my machines are presently sieving 6,283+.c193. I'm about 20% through sieving that one (perhaps another 2 weeks to go?) and expect to take another 3 weeks or so afterwards to perform the post-processing.


Paul

[Jushi]

Originally Posted by Wacky

I'm presently trying to get enough memory onto another machine to see if I can make any progress.

As Paul can tell you, the filtering files are getting to be rather large and we are having to be careful that we don't run into filesystem limits.

For people like me who never do any of this: what kind of size of memory and disk are we talking about?