Hi again: I received the mail from Mersenne list two times. Is it because of subejct? :) The first time is the mail I sent to list, the second is the same mail mirrored by an unknown for me 'ntsys24.yucom.be' system. !?
> > Back to the subject, I'm wondering about how fast can we do two L-L test in > parallel using this SSE2 extensions. Basically, I'm thinking in use two > nearest exponents with the same FFT-length. The memory access in FFT phase > would be the same, the trig data also the same, the most difficult part > would be the carry-and-normalization pass. This dificult could also dissapear making the second test over the same exponent. We then get the L-L and double check at once. Remember the scheme Prime95 uses to make double check is to shift initally a random number of bits. DWT scrambles the data enough to be reasonabily sure both test are independent. A matching result would imply a very confident result. A non matching result would say us something was wrong. It also would allow us to check interim results to be sure all is well so far. Regards Guillermo. _________________________________________________________________________ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
