RSA Lattice Siever (2.0)

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Profile [AF>Libristes] Guepi

Surnom français, abréviation d'un surnom plus long : "Marius Baguepi".



RSALS now stopped
hello all,

RSALS is finally closed. All the operations were transferred to NFS@home at:

Now, please join NFS@home as soon as possible so that you continue to factor numbers. Lionel Debroux will continue to manage the numbers.

See the new famous crunching.php page at:

Only 4 numbers are being crunched, please come in to increase the new grid's power!

This website, showing users and credits, will stay here forever. Only the boinc programs are stopped.

thank you all for working with us.

18 Sep 2012 | 19:18:13 UTC · Comment

RSALS shutting down at the end of August, please migrate to NFS@Home...
As announced 11 days ago, RSALS operations are being merged into the larger NFS@Home grid.
The initial tests have been very positive, so migration will now proceed as intended. NFS@Home has a newer and better version of the same siever program (derived and improved from the original RSALS program). The same persons will remain involved in providing numbers and using the results, and feeding the BOINC server.
We will stop feeding WUs into RSALS at the end of this month. You can finish your current work, and even take a bit more for the time being, but please schedule the migration of your BOINC clients to NFS@Home. You don't need to wait, you can migrate now.
Unlike RSALS, NFS@Home appears in the BOINC Manager's list of projects.

Our announcement seems to have sparked clients' interest into RSALS, as the power of RSALS raised from an indicated ~250-350 GFLOPS (on the status page) to more than 1300 GFLOPS at the time of this writing. Thanks for your interest, which helps multiple integer factoring projects, and thanks to volunteer post-processers for helping us :-)

If you don't want the NFS@Home WUs to use more RAM than the current RSALS WUs do, you'll have to make sure, in the preferences of your account on NFS@Home ( ), that "lasieved" is the only enabled siever.
If you want to make your computers work on harder numbers, then you can enable the "lasievee", "lasievef" and "lasieve5f" sievers, in increasing order of memory requirements. lasieve5f can require more than 1 GB of RAM per core.

We hope to see you on NFS@Home soon :-)

Most of the BOINC server programs will be stopped, but the current RSALS web pages will stay here and will continue to show your contributions to this great project.

Lionel Debroux & squalyl for RSALS.
16 Aug 2012 | 5:29:19 UTC · Comment

RSALS moving to NFS@Home and shutting down...
After nearly three years of work, at first for factoring the 512-bit RSA keys used for validation in TI-Z80 and TI-68k graphing calculators, but soon repurposed for factoring integers of mathematical interest, RSALS is currently being moved to the larger NFS@Home grid, before being shut down in the next few weeks, after the current numbers (and perhaps a couple easy ones, to pick up the slack ?).

Clients connected to RSALS have participated in the factoring of about 400 fairly large composite integers, helping a number of projects interested in those factorizations. Thanks so much for your trillions of CPU cycles over those three years :-)

RSALS was the first BOINC grid using the Number Field Sieve algorithm, the most efficient known algorithm for large integers. The NFS@Home grid was created shortly after RSALS by Greg Childers, a.k.a "frmky", Associate Professor of Physics at California State Fullerton University, well-known in the integer factoring community and aiming at factorizations larger than RSALS could reach through the sole "14e" siever program it used, by using the larger "15e", "16e" and other sievers.
For almost three years, RSALS and NFS@Home were used in a complementary way; but the time has come to make these a single, more powerful grid with a single set of programs, rather than spending time installing RSALS to a newer server (the current one being expensive and under-powered) and importing NFS@Home's sievers into RSALS.

Thanks again to our BOINC clients, our post-processers, and the integer factoring community. We hope to see you on NFS@Home soon :-)
NOTE: if you really don't want the NFS@Home WUs to use more RAM than the current RSALS WUs do, you'll have to make sure, in the preferences of your account on NFS@Home ( ), that "lasieved" is the only enabled siever.

For a more detailed version of this post, see the MersenneForum announcement.

Lionel Debroux & squalyl for RSALS.
4 Aug 2012 | 7:26:38 UTC · Comment

Server problems...
Yesterday, the disk space on the server overflowed, because I forgot to clean up some results whose factorization is complete.
To our dismay, corruption of the SQL database ensued, but oddly, several hours after the "disk full" condition had been cleared by suppressing 20+ GB of obsolete data. That's how we learnt, the hard way, that MySQL crapped out in ENOSPC circumstances...

squalyl has restored the SQL database from a complete dump made last week-end, I'll queue up new numbers tonight and handle the status of the numbers in-between (probably switching them to manual generation, as I did for dozens of numbers before squalyl wrote the automated work generation system).
Thanks to advice from Greg Childers (NFS@Home), WU priorities now work, so the "older" numbers will be distributed first.

Sorry for the inconvenience, and please bear with us - hopefully, the partial downtime will be short :)

16 Nov 2011 | 9:57:01 UTC · Comment

Moar stats
<p>the server_status page was upgraded with some nice RRDTOOL graphs showing the current number of ready and in progress results.</p>
<p>See here:
<a href="">Server status</a></p>
<p>Now planning to graph the server disk usage.</p>
5 Nov 2010 | 13:46:28 UTC · Comment

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