... Just to be clear that we aren't talking Apples and Dells, there are two separate order dependence issues. The first is the random number generator used in...
... I should like to have a version free of all order dependence ... Then the remaining issues would be free of order dependence. But you are the boss, Mark....
I have modified PFGW to do the following when a roundoff/sumout/mismatched sums error occurs during a primality test: pfgw -t -q"Phi(82730,2)" Primality...
... I will remove this today. I have not announced it officially and as long as this other issue exists in PFGW or as long as I don't improve the message when...
... A fortiori, this recent Windoze build: http://openpfgw.svn.sourceforge.net/viewvc/openpfgw/pfgw_win_3.2.3_20090928.zip should be now free of *all*...
... I will not make -a1 mandatory. The better option is to have PFGW tell users to use the -a switch for primality tests that fail due to rounding and sumout...
... That is of no account, since mt19937.c would be vitiated by the indubitable order dependence on bases in the version of August 18. Conversely, a new linux...
... Not so. The switch -a1 will avoid the errors that I have reported. Videlicet: $ pfgw -tc -a1 -q"Phi(13,2^2749)/8191" ... Yet without -a1, version 3.2.2...
... That would be helpful, please, if (and only if) it is compiled with George's mt19937.c file. Then we will be left with a clearly reproducible brokenness of...
... I can also break gwnum with polcyclo(13): $ pfgw -tc -q"Phi(13,2^2749)/8191" Error occuring in PFGW at Tue Sep 29 00:41:16 2009 Expr = Phi(13,2^2749)/8191 ...
... I have patched the one piece of code that I had already mentioned. Steven can grab at any time and produce a build if he wants, but I would prefer that he...
... Thanks, George. The linux build has not changed since August 18. It would be great to have a completely order-independent linux build, with Mark's latest...
... Depending on the exact representation used, that might just have a period-5 comb as its bit-pattern, and cause the FFTs to explode unpleasantly. It might...
... Let me amend that. PFGW does have a bug, but even with when I use the gwnum carefully routines for every iteration, it still fails. The only difference...
... Here is a third: $ pfgw -t -q"Phi(82730,2)" Error occuring in PFGW at Mon Sep 28 17:36:02 2009 Expr = Phi(82730,2) Failed at bit 30 of 32846 Msg = Detected...
Here, are two more ways of breaking gwnum: $ pfgw -t -q"Phi(35737,2)" Error occuring in PFGW at Mon Sep 28 17:26:30 2009 Expr = Phi(35737,2) Failed at bit 4 of...
... Not in the case of -tc. ... http://physics.open.ac.uk/~dbroadhu/cert/pfbug Then the linux command $ pfgw -tc -lpfbugout -N pfbug produces the output...
... Thanks, Mark. Now we are left with the order-dependence of George's pseudo-random number. It would be good to get rid of that too, please, George. My...
... I was able to reproduce this error and fix it. This problem existed before I took over the project. I have not verified if it was in 1.4 (the version for...
... With x = 2^7331, we have a very regular binary pattern for 151*Phi(109965,2) = x^8 - x^7 + x^5 - x^4 + x^3 - x + 1. Perhaps it was this that enabled me to...
I have reproduced the error under Ubuntu 9.04. Primality testing Phi(109965,2) [N-1/N+1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 227 Running...
... George needs to note that the failed exponentiation ... There are two factors that make it very tedious to recover this (undoubtedly reproducible) error: ...
... The roundoff error is most likely and issue with gwnum, but I will investigate on my end. George, could you look into it on your end? The issue with...
