Hi Phil, PFGW Version 20050213 Doesn't work with trying to prove multifactorials either See http://tech.groups.yahoo.com/group/openpfgw/message/1828 Cheers Ken...
Hello, I've been running WinPFGW since April. I did a stop on the program, and it hadn't finished, during which the computer guy messed with the task manager ...
What were you running? the factor (-f) mode? If so, there is no resume, however, you can use the -s switch to startthe fractoring from some higher number...
Jim, Thank you, I don't have any switch extensions in the file with the number. I have the pfr file. It's been growing over the twenty million calculations...
Hello Jim and team, Start of a new week and will try to get it going again. I'm beginning to accept the disappointment of not having cycles running, but not...
... What PFGW is doing is a simple modular exponentation. That is a truely serialized proceedure. I think the only multi-cpu "gains" possible, would be to...
Hello Jim, Thank you for the tutorial on mod arith and prime proving. It will take a bit to digest the entire text completely. I agree that the program is...
Does anyone have the full source of VFYPR? THe thing I am unable to find is the ar2220.zip that contains everything need for the ar*.h files in vfypr.c. I'd...
Thanks Sergio, it is what I was looking for. The source seems fairly old and I hope I am able to recompile... otherwise I'll have to rewrite it. Sergio Luis...
I've just updated the OS on one of my boxes, and it doesn't have the requisite libraries to run my old pfgw binary. Rather than hunt out old libraries, I ...
... The dumb solution is to just symlink gcc to gcc-4.1 and g++ to g++-4.1 Obviously this required buggering around in /usr/bin as root, which is not really an...
I came across 2 problematic numbers. All below runs are on Core 2 Duo E6600 with Windows Vista Home Premium and PFGW Version 1.2.0 for Windows [FFT v23.8] I...
Hello, The last version I'v found of PFGW for Linux is v1.2 , dated January 2005. The executable seems to work well, though I have some cores. About the source...
Gang, I've been very quiet for a long time, but given I have some idle time, I have a FC6 machine (dual core) running in 64 bit mode. I keep it well updated...
This is a fairly lengthy reply to the postings of Jens and Paul from last April. Because of the length of the documentation, I will start with a summary of my...
I ran into something that seems rather odd and most likely erroneous. As you can see from the command line, I was testing for GF and xGF cases on a rather...
No retest is needed. The numbers were found quickly due to not having to "backtrack". The code computes 2^(2^1832495), 3^(2^1832496), 5^n 7^n, 11^n. It then...
What caused me the most concern was the 1232842.226000 time shown. Note that the wall clock time for the GF(11) case was on the order of 1-2 seconds, yet it...
... The gwnum library is indeed too aggressive in choosing FFT sizes. I'm working on isolating the problem. Unfortunately, any fix will appear in the 25.6...
... Background: FFT sizes have been set by trial and error using lots of Mersenne-only data over many years. When upgrading the FFTs to handle a wider...
Is it possible to build and run pfgw on SunOS 5.10 ? I tried to build it on SunOS 5.10 Generic_118844-26 i86pc i386 i86pc but I got the following error: ...
The strange behaviour is that on a Linux machine the build works fine but , on the SAME SOURCE CODE LINES OF THE SUN OS ERROR, gives the following warnings: ...
Hello group, Do you have any idea why openpfgw systematically crashes on systems with xeon processors ? I have 2 servers, one linux box and one windows box...
Not sure on Windows, but on Linux, it's failing because NX (no execute) or XD (execute disable) is set in your BIOS. This is designed to prevent some trojans...
Hi Greg, ... executed. ... another ... You're perfectly right! I've check my W2003SP2 server and my Linux server and both have NX activated. Thanks a lot for...
... I don't know of any way to do it at runtime. I think you can disable NX at boot by passing the option noexec=off to the kernel. If you use grub, you can...
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