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Search: Posts Made By: Thomas11
Forum: 3*2^n-1 Search 2007-02-14, 10:17
Replies: 51
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Views: 21,856
Posted By Thomas11
Just out of curiosity I did a test on an Opteron...

Just out of curiosity I did a test on an Opteron 246 (2 GHz) using the "CpuSupportsSSE2=0" switch to see whether it would run faster at the lower FFT length. Here are the figures I got:


...
Forum: 3*2^n-1 Search 2005-10-08, 14:38
Replies: 51
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Views: 21,856
Posted By Thomas11
Meanwhile I had some additional tests on the...

Meanwhile I had some additional tests on the Athlon, using LLR 3.5, 3.6, and 3.6.2.
As Paul already mentioned in the above post, the FFT boundaries are slightly lower for the latest LLR versions...
Forum: 3*2^n-1 Search 2004-08-03, 08:29
Replies: 51
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Views: 21,856
Posted By Thomas11
You are testing k=121, right? And around...

You are testing k=121, right? And around n=700,000 (or may be n=730,000) I would expect a lot of fftlen switching with the old LLR, isn't it?
The new formula for choosing the FFT length works well...
Forum: 3*2^n-1 Search 2004-03-31, 18:25
Replies: 51
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Views: 21,856
Posted By Thomas11
Just one short note: It seems that the...

Just one short note:

It seems that the "+016" bug happens under Windows only. I've tested some low n-values for k=5 and k=7 twice on a Athlon runing Windows and on a P4 running Linux. I've got...
Forum: 3*2^n-1 Search 2004-03-26, 14:09
Replies: 51
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Views: 21,856
Posted By Thomas11
It seems that the Linux version can be stopped by...

It seems that the Linux version can be stopped by pressing <Ctrl><C> or the "kill -15" command, but usually it doesn't stop immediately. It may take a few seconds to half a minute until it stops. ...
Forum: 3*2^n-1 Search 2004-03-24, 18:44
Replies: 51
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Views: 21,856
Posted By Thomas11
another problem of the new LLR

There seems to be another problem of the new version of LLR.

For some of the tests the initial guess of the FFT length is found to be too small, so it switches to the next higher one and restarts...
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