At 13:05:41, Monday, 3/10/03, Brian J. Beesley wrote: > I just tried Test=8907359,64,0 on two systems - an Athlon XP 1700+ and a > P4-2533, both running mprime v23.2 with 384 MB memory configured (out of 512 > MB total in the system). These were fresh installations, I did nothing apart > from adding SelfTest448Passed=1 to local.ini to save running the selftest.
> The Athlon system picked B1=105000, B2=1995000 whilst the P4 picked > B1=105000, B2=2126250. So it seems that P4 is picking a significantly but not > grossly higher B2 value. > Yes, I checked, both systems are using 448K run length for this exponent > (though it's only just under the P4 crossover). Maybe the P-1 bounds calculation accounts for the slightly slower than normal iteration time that 8907359 would have on a P4 because of the roundoff checking (since it is very close to the P4 512K FFT limit). -- Nick Glover [EMAIL PROTECTED] "It's good to be open-minded, but not so open that your brains fall out." - Jacob Needleman _________________________________________________________________________ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
