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-   -   2^821-1 (https://www.mersenneforum.org/showthread.php?t=10267)

fivemack 2008-05-14 18:16

Yes, that's right. You do need to specify a new output filename - after one embarrassing incident, I hacked the gnfs-lasieve that I use at home to fail if the output file exists, and there's at least one version which conveniently uses as default filename {polynomial file}.lasieve-{side}.{start}-{end}.

You're right: concatenate the relations files, gzip and upload when you're finished. Good luck with the sieving!

bdodson 2008-05-14 18:22

[QUOTE=fivemack;133268]70-100M on the R side would be fantastic, thanks! [/QUOTE]

Let's make that 70M-100M A+R; adjusting my scripts for writing condor
submit files to use "-a" wasn't as bad as I thought. -Bruce

(I'm alternating 10M ranges for 821- and 949+, 70M-80M "R" was just
about done.)

mdettweiler 2008-05-14 20:22

I was just thinking: should I be using gnfs-lasieve4I15.exe instead of gnfs-lasieve4I14.exe? I know I15 produces more relations in a given range, but would it make my range take longer?

bsquared 2008-05-14 20:26

[quote=Anonymous;133428]I was just thinking: should I be using gnfs-lasieve4I15.exe instead of gnfs-lasieve4I14.exe? I know I15 produces more relations in a given range, but would it make my range take longer?[/quote]

Yes, roughly twice as long. I believe the use of 15e has been requested, yes.

mdettweiler 2008-05-14 20:31

[quote=bsquared;133429]Yes, roughly twice as long. I believe the use of 15e has been requested, yes.[/quote]
Hmm...okay. I'm at about 2.5% through my range right now; I'll switch over to 15e shortly.

mdettweiler 2008-05-14 21:40

Considering the 2x slowdown from using 15e for my range, I think I'll only do 40-40.5 instead of 40-41. This should bring the time to complete the range back in line with what I had originally planned for. :smile:

smh 2008-05-16 13:17

Extended my own reservation to 45M on both sides

Andi47 2008-05-17 10:04

Hmmmm... Where did I say that I reduce my reserved range from 40-41M R to 40-40.5M R?

I still plan to do 40-41M on the R side.

Edit: @ fivemack: I think that you have entered the reducing of Anonymous' range in post #17 into the wrong line.

[b]fivemack[/b]: Yes, I did, sorry; fixed now

mdettweiler 2008-05-22 18:18

40M-40.5M on the A side is complete, now uploading. :smile:

Edit: Upload complete.

mdettweiler 2008-05-24 04:22

I'll do 45M-45.5M on the R side, if nobody minds me having to delay starting it for a couple of days. :smile:

fivemack 2008-05-24 09:25

Dates for the matrix job
 
Thanks to the enormous resources that bdodson has applied to sieving, we're doing pretty well with relations; I'm doing a run at the moment which I expect to generate a matrix. Further relations will reduce the size of the matrix, and I suspect reduce the run-time by more than the time it takes to produce the relations, so we should definitely keep sieving for the next couple of weeks.

I intend to start the matrix job on or about June 7th, so please don't make reservations that you are not sure you will be able to complete by then; I'll do a final call for uploads of relations from unfinished ranges on June 5th.


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