How to start?

[1997rj7]

In the pre-25 versions, FactorOverride is ignored if UsePrimenet is set to true in prime.ini. I don't know about the new version.

[henryzz]

is prime95 faster than factor5

[ET_]

Originally Posted by henryzz

is prime95 faster than factor5

Yes (unless you have a dual processor quad-core :-D)

Luigi

[henryzz]

thanks

[tha]

Originally Posted by grobie

Is it just me or is the link http://www.mersenne.org/status.htm to upload nofactor.zip not working? when I try to upload it, it timesout. I tried yesterday too same thing.

You obviously mean download, upload is when you send a file to the server. It does not work at the moment, that is correct. Please post questions in a proper section, this thread is meant for people who want to start LMH work.

[TheJudger]

Hi,

maybe I'm too late for this answer but the solution is quiet easy.

Originally Posted by leifbk

Okay. I'm at work now, so I'll make a fresh start. I cut and pasted your includes and commented out the originals:

leif@bombadil lmh $ gcc -o decomp DECOMP.C -lm
DECOMP.C: In function `int isprime(long unsigned int)':
DECOMP.C:36: warning: converting to `long unsigned int' from `double'
DECOMP.C: At global scope:
DECOMP.C:381: error: `main' must return `int'

Then I make the change from "void main" to "int main":

leif@bombadil lmh $ gcc -o decomp DECOMP.C -lm
DECOMP.C: In function `int isprime(long unsigned int)':
DECOMP.C:36: warning: converting to `long unsigned int' from `double'
/tmp/cc01U5sU.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status

As you probably know, Gentoo is a "from source" distribution. Thus, my gcc (both here and at home) is in almost daily use for patching and upgrading, and hardly chokes on anything.

I'm suspecting a gcc version problem here:

leif@bombadil lmh $ gcc --version
gcc (GCC) 3.3.5  (Gentoo Linux 3.3.5-r1, ssp-3.3.2-3, pie-8.7.7.1)
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

I suppose that there's a way to set a flag for backwards compatibility?



regards, Leif.

just rename the "DECOMP.C" to "decomp.c" or "DECOMP.c".
gcc thinks that files with ".C" are C++ code while ".c" is for C code.

using gcc 4.1.2 (x86_64):

unzip decomp.zip
rm DECOMP.EXE
mv DECOMP.C decomp.c
gcc decomp.c -o decomp -lm

You still have to add some includes to remove some warnings. :)

TheJudger

[Greg Kester]

hi,

If you want to LL-test a certain range, type in " -t " instead of " -w ".
The program creates a file called "nofactor" which you rename in "worktodo.ini" and move to the directory, you installed prime95 / mprime to, as stated by Henk.

[garo]

A note of caution. nofactor.cmp is not being updated so you will likely get incorrect data. Use http://v5www.mersenne.org/report_factoring_effort/ instead.