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Old 2004-02-27, 00:15   #1
antiroach
 
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Default ECM 5.0.3 for windows

Is there such a binary available? I've found the source but I dont know how to compile it. Im trying to use p95 ecm with stage 2 ecm being done by gmp-ecm. I currently have ecm 5.1-beta and this version doesnt seem to like the format of the file produced by prime95. I get this error:

Code:
GMP-ECM 5.1-beta [powered by GMP 4.1] [ECM]

Error - unknown operator: 'x'

Error - invalid number [Q]

Error - invalid number [S]
N field not followed by semicolon
Im not sure 5.0.3 will work, I've used an older version (GMP-ECM 5.0 [powered by GMP 4.1.2] [ECM]) And this works. but it has a bug that was identified with this version. I don't want to run ecm curves on a buggy version. Anyone know what I can do ?
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Old 2004-02-27, 07:02   #2
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Don't know the exact version, but you can find one in the filesection of the primenumbers yahoo group at http://groups.yahoo.com/group/primenumbers/

I think you need to become a member first.

ecm-51-beta.zip is located at http://groups.yahoo.com/group/primen...grams/GMP-ECM/
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Old 2004-02-27, 14:20   #3
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I suggest 5.0.3. It is not a beta and had fixed a few issues with 5.0. The 5.1 version in the primenumbers group is a different branch from 5.0 and has different mods than 5.0.3. I tried the 5.1 version once and had lots of problems with it. 5.0.3 has been rock solid.
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Old 2004-02-27, 21:25   #4
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i dont see the 5.0.3 version in that files section. only the 5.0c and that is a buggy version as well. i have the 5.1 beta but it doesnt work with the file i need it to work with. any other ideas where i can get the 5.0.3 version ?
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Old 2004-02-27, 23:23   #5
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Quote:
Originally Posted by antiroach
i dont see the 5.0.3 version in that files section. only the 5.0c and that is a buggy version as well. i have the 5.1 beta but it doesnt work with the file i need it to work with. any other ideas where i can get the 5.0.3 version ?
this version works for me. I run the program something like this

ecm -inp in.txt -n -d -c 10 -I 1 250000 >> out.txt
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Old 2004-02-28, 02:09   #6
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will this work with the residues that prime95 generates so that i can do stage 2 of the algorithm ?
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Old 2004-02-28, 09:48   #7
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Quote:
Originally Posted by antiroach
will this work with the residues that prime95 generates so that i can do stage 2 of the algorithm ?
I never tried, but IIRC you'll have to use the -resume option
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Old 2004-02-28, 22:28   #8
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Go to http://www.loria.fr/~zimmerma/records/ecmnet.html for the current release of gmp-ecm.
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Old 2004-02-29, 00:26   #9
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The 5.1 branch has not been updated with the bug fix, and will not work with Prime95 files anyway. 5.0.3 will work with the Prime95 files. I'm assuming you need a Windows binary? As long as you don't mind using a Cygwin build, I can send you the binary and DLL if you PM me your email address. What processor do you use? I have an Athlon optimized build already that I can send you, and on Monday I can make a P4 optimized build if you need that.

Greg
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Old 2004-03-03, 19:52   #10
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hey frmky, did you get my private message? if so, and you sent me the binary would you mind sending a 2nd time, because I think the junk mail filter may have flagged your email as junk. thanks
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Old 2004-03-03, 22:40   #11
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You can also try : http://www.geocities.com/greatpsycho/index.html
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