If you have the resources, please consider helping out. PrimeGrid uses sr2sieve for the PSP subproject.

Currently we will remove the 64 bit Windows build at p=2200T. However, if this fix proves valid, then we'll be able to continue 64 bit Windows sieving by releasing a new build.

Thanks for your consideration.

Posted in the Mersenne Forums by Geoff, the creator of sr2sieve:

The problem with the Windows x86-64 executable seem to be fixed in sr2sieve version 1.6.16.

If anyone running 64-bit Windows can help with testing, what would be really useful is to reserve a current range of about 100G or so, then add the switchs `-D duplicates.txt --no-sse2' to the normal command line for manual sieving. Send me a copy of both the factors*.txt and duplicates.txt files, and I will check the range using the Linux executable. My email address is in README.txt included with sr2sieve.

Just one example from my sr2sieve-command-line.txt

sr2sieve --no-sse2 -p2309360e9 -P2309410e9 -Dduplicate.txt -s

Here i start in winXP 64bit
-------------------------------------------------------------
Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.


C:\srs>cd s

C:\srs\s>sr2sieve
(Read 5 command line arguments from file `sr2sieve-command-line.txt').
sr2sieve 1.6.16 -- A sieve for multiple sequences k*b^n+/-1 and b^n+/-k.
Read 2135444 terms for 17 sequences from dat format file `SoB.dat'.
Split 17 base 2 sequences into 169 base 2^360 subsequences.
Expecting to find factors for about 1.31 terms in this range.
sr2sieve started: 991 <= n <= 49999997, 2309360000000000 <= p <= 230941000000000
0
p=2309360196480413, 1097503 p/sec, 0 factors, 59.4% cpu, ETA 14 Dec 11:35

Lennart

Thanks to those who helped with testing, sr2sieve 1.6.16 is working correctly on Windows x86-64.