SR2sieve

[Joe O]

PRS52 v0.102b for processor type SSE2

First of all, you are running a very old version of JJsieve. The newer versions were much faster, but SR2sieve is faster than even the last released version.
Head on over to: http://www.geocities.com/g_w_reynolds/sr2sieve/ and pick up the latest version of SR2sieve.
Any references to the url http://www.geocities.com/g_w_reynolds/ should be replaced with the url http://sites.google.com/site/geoffre...olds/programs/.
There are Linux (32bit and 64bit), Windows (32bit and 64bit), and OSX versions available. READ the readme.
There is also now a way to drop SR2sieve in as an almost compatible replacement for JJsieve:

sr2sieve 1.6.10 has a new -j switch that will make it behave in a similar way to JJsieve or proth_sieve, for compatibility with Sobistrator. Checkpoints are written to SoBStatus.dat, ranges are read from nextrange.txt.

It should be possible to start a range with JJsieve and continue it with `sr2sieve -j -s', and vice versa.

I haven't actually tested it with Sobistrator though, so let me know if there are any problems.

Let us know what your speed improvement is after you upgrade.

Since .gz files cannot be attached, the .txt extension was added to two of the following files. Remove the .txt extension before trying to use them. These files are here for convenience only. The latest versions can always be found at http://www.geocities.com/g_w_reynolds/sr2sieve/.

Any references to the url http://www.geocities.com/g_w_reynolds/ should be replaced with the url http://sites.google.com/site/geoffre...olds/programs/.