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Old 2004-04-20, 17:05   #1
Mar 2004

102 Posts
Exclamation llr on AMD64 ?

anyone running llr2 on an AMD64 ?

either its extremly slow or it crashes, not sure, it sits there eating 100% cpu, cant stop it and doesnt spit out results.
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Old 2004-04-20, 17:56   #2
paulunderwood's Avatar
Sep 2002
Database er0rr

2·11·167 Posts

I don't have an AMD64 but the latest LLR still has a bug which does not start if a save file exists. I have told Jean and he said that he will look into it. Try deleting any save files -- these begin with a 'y' or an 'z' and have 6 numbers following in their file names. Then start LLR and DO NOT stop it as this will create a save file. Also if you use "start at boot up" a save file is created when you shut down. Another tip: set "minutes between disk writes" to 999999. Try that an let us know. I believe a fast P4 is still quicker than an AMD64 for LLR.
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Old 2004-04-21, 09:27   #3
Mar 2004

2 Posts

that other bug wasnt occurring on my xp2800+ before, but my new machine seems not to be able to help you anymore ...
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Old 2004-04-29, 11:56   #4
Thomas11's Avatar
Feb 2003

111011101002 Posts

I've tried the new LLR on an Opteron (under Linux) without any problems.

But I've found that it disables IBDWT when testing k>31 and n>10000 (surprisingly it uses IBDWT below n=10000). One can force the use of IBDWT for k>31 by adding the following line into the llr.ini file:


-- Thomas.
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Old 2004-05-11, 07:38   #5
Dresdenboy's Avatar
Apr 2003
Berlin, Germany

192 Posts

Sounds like it is related to the SSE2 code accuracy thing we know from Prime95.
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