Thread: DWT
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Old 2004-03-21, 06:05   #2
b2lee
 
Oct 2003
Atlanta, GA USA

28 Posts
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Any day now:)

A quote from my forums at www.rieselsieve.com

First...a run with the new program and Using the standard Proth mode LLR (and SSE2 features) :

[Sun Mar 14 22:56:22 2004]
3*2^414840-1 is prime! Time : 950.222 sec.
[Sun Mar 14 23:43:53 2004]
3*2^584995-1 is prime! Time : 2851.126 sec.
[Mon Mar 15 01:06:26 2004]
3*2^702038-1 is prime! Time : 4953.934 sec.
[Mon Mar 15 02:31:05 2004]
3*2^727699-1 is prime! Time : 5076.015 sec.


Now...notice with Using IBWT, but not SSE2 features :

fftlmers = 28672, fftlen = 30790, fftlenmax = 57344, FFTLEN = 32768
[Sun Mar 14 20:40:52 2004]
3*2^584995-1 is prime! Time : 1528.484 sec.
fftlmers = 40960, fftlen = 43878, fftlenmax = 81920, FFTLEN = 49152
[Sun Mar 14 21:28:25 2004]
3*2^702038-1 is prime! Time : 2853.473 sec.
fftlmers = 40960, fftlen = 45482, fftlenmax = 81920, FFTLEN = 49152
[Sun Mar 14 22:17:31 2004]
3*2^727699-1 is prime! Time : 2945.688 sec.

WHOA!!!!! Did you see that?...but wait....

Now look at Using IBWT and SSE2 :....O...the P4's and the AMD64's should kick some major ass.

fftlmers = 28672, fftlen = 30790, fftlenmax = 65536, FFTLEN = 32768
[Sat Mar 20 17:03:07 2004]
3*2^584995-1 is prime! Time : 524.397 sec.
fftlmers = 40960, fftlen = 43878, fftlenmax = 81920, FFTLEN = 49152
[Sat Mar 20 17:21:15 2004]
3*2^702038-1 is prime! Time : 1087.812 sec.
fftlmers = 40960, fftlen = 45482, fftlenmax = 81920, FFTLEN = 49152
[Sat Mar 20 17:40:08 2004]
3*2^727699-1 is prime! Time : 1129.478 sec.



As long as the k is under 9 bits in size....you get one hell of a bump in LLR speed. May this gift to you bring you many primes...FAST:)

Lee Stephens
B2
www.rieselsieve.com

O...it will be out soon...I'm sure Jean Penne will email you soon with details.
b2lee is offline