[EMAIL PROTECTED] wrote:
> One of the drawbacks of doing it
> by hand in assembler...too bad high-quality HLL compilers (i.e. ones
> capable of giving 80-90% of the performance of laboriously coded and
> hand-tuned ASM, for complex, data-nonlocal algorithms requiring lots
> of data prefetch) appear to be nigh-impossible to write for CISCs like
> the x86 family. I don't want to start a RISC-versus-CISC flame war here,
> but the fact is, no high-level FFT-based large-integer-multiply code has
> gotten within a factor of 2 of the performance of Prime95 on the Pentium.
Glucas, a C-coded program to L-L test reaches about 55% performance with
respect Prime95 when is compiled with GNU/gcc compiler on Pentium and no
assembler macros used. After including about three hundred lines of
assembler lines, the performance rise to about 65%.
Regards.
Guillermo.
_________________________________________________________________________
Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm
Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
