20090728, 16:54  #1 
A Sunny Moo
Aug 2007
USA (GMT5)
1869_{16} Posts 
PFGW latest welltested version
Hi all,
A couple of days ago, PFGW 3.2.0 was released. This version fixes many of the problems in 3.1.0 including the residue bug. The roundoff errors were not fully fixed with this release. Versions 3.3.0 and later correct all roundoff errors. Versions 3.3.6 and later correct all issues related to the proof of smaller PRPs. Here are links to the latest welltested versions of PFGW: PFGW 3.4.1 for Windows PFGW 3.4.0 for Linux PFGW 3.4.0 for Mac PFGW 3.4.0 & 3.4.1 are now the most highly recommended programs for testing at CRUS. PRPnet 3.3.5, which likewise fixes all known bugs in PRPnet, utilizes PFGW for nonpowerof2 PRP tests if available. If you're using PRPnet, we highly recommend downloading this latest version. See this thread for more information. Max Last fiddled with by gd_barnes on 20100929 at 20:16 Reason: update PFGW versions 
20090729, 08:37  #2  
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
1719_{16} Posts 
Quote:
ll tests have been made a little faster since gwnum 24.14 and also has speed ups for 64bit i suspect that those speedups will also help llr 

20090729, 12:34  #3  
"Mark"
Apr 2003
Between here and the
191C_{16} Posts 
Quote:
BTW, I have not heard from Jean in a while, so I don't what's going on with him. Since LLR source is available, it would be relatively easy to upgrade it, but I would prefer to have his permission before doing so. As for a 64bit build, I'm working with Geoff Reynolds as there is a single asm module in PFGW that will not compile as 64bit. I'm not an x86 asm guru, so I'm hoping that he can come up with a single module that works for both 32bit and 64bit environments. 

20090804, 10:51  #4 
May 2007
Kansas; USA
10100100011000_{2} Posts 
I'm getting an error on PFGW with my new Sierp base 52 reservation. Here it is:
Code:
 Error occuring in PFGW at Tue Aug 04 05:07:35 2009 Expr = 9243*52^2046+1 Failed at bit 1877 of 11676 Msg = Detected in MAXERR>0.45 (round off check) in prp_using_gwnum Iteration: 1877/11676 ERROR: ROUND OFF 0.46875>0.45 Its running without sieving up to n=5000 so I have the f100 switch set for trial factoring. A quick check using Syd's DB found no factors up to P=10M but it is composite. So no problems caused at this point but it could cause a problem on a real prime in the future. Can someone look into this for me? Thanks, Gary Last fiddled with by gd_barnes on 20090804 at 10:55 
20090804, 11:30  #5  
Quasi Admin Thing
May 2005
3C7_{16} Posts 
Quote:
Regards KEP 

20090804, 11:33  #6  
"Mark"
Apr 2003
Between here and the
2^{2}×1,607 Posts 
Quote:


20090804, 11:52  #7 
I quite division it
"Chris"
Feb 2005
England
31·67 Posts 
While you're at it, the mouseover popup for version 3.2 says version 3.1.

20090804, 12:59  #8  
A Sunny Moo
Aug 2007
USA (GMT5)
3×2,083 Posts 
Quote:


20090804, 14:50  #9  
"Mark"
Apr 2003
Between here and the
2^{2}×1,607 Posts 
Quote:
Never mind, I think I found it. Last fiddled with by rogue on 20090804 at 15:05 

20090804, 15:07  #10 
I quite division it
"Chris"
Feb 2005
England
4035_{8} Posts 
I think it's because if you rightclick and choose Properties/Version, it says version 3.1
In Windows btw. 
20090805, 01:47  #11  
May 2007
Kansas; USA
2^{3}×5×263 Posts 
Quote:
Quote:
Nothing earth shattering but I just wanted you to know in case it helps you detect a pattern of them or their frequency. The test that found these 2 problems is for all k's that are not k==(2 mod 3) on Sierp base 52 up to k=28673 and n=5000 so the problem is very infrequent for a fairly large # of k/n pairs tested. No sieving ahead of time was done. PFGW is set to do trial factoring with the f100 switch. Gary Last fiddled with by gd_barnes on 20090805 at 01:54 

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