Quote:
Originally Posted by ewmayer
Apparently I was overly aggressive in setting the maximum exponent for the 480K FFT length  try using 512K instead.

It looks like that fixed it...
[code:1][Xyzzy:~/Desktop/Mlucas] mvang% ./Mlucas
looking for worktodo.ini file...
no worktodo.ini file found...switching to interactive mode.
Enter exponent, FFT length in K (set K = 0 for default FFT length) >9490001,512
Enter 'y' to run a selftest, <return> for a full LL test >y
Enter number of iterations for timing test>
100
Enter index of radix set to be used for the FFT:
(See file fft_radix.txt for a list of available choices; enter 1 to get the default) >1
Enter 'y' to enable periteration error checking, <return> for no error checking >y
p is prime...proceeding with LucasLehmer test...
M( 9490001 ): using FFT length 512K = 524288 8byte floats.
this gives an average 18.1007404327393 bits per digit
INFO: Using real* 8 for FFT sincos and DWT weights tables inits.
WARN: radix set 1 not available  using defaults.
Using complex FFT radices 8 32 32 32
100 iterations of M 9490001 with FFT length 524288
Res64: F9C0781482193C32. Program: E2.7b
Clocks = 00:01:44.646
STOP[/code:1]
Quote:
Originally Posted by ewmayer
As far as your 4608K run is concerned, I'm not sure how I settled on 87.7M as the max exponent for that FFT length, but it's much too large  my current version of the code lists 83.76M as pmax for 4608K.

Do you have a known selftest result I can use to test this range?