RE: Mersenne: K7 vs. x86

1999-08-23 Thread Brian J. Beesley
On 22 Aug 99, at 21:30, Aaron Blosser wrote: But as we can see from the real world benchmarks, even though the Athlon still does better, clock for clock, than a PIII, the difference isn't as great (only ~107% faster on Winbench 99 FPU Winmark). The benchmark was done with a PIII Xeon with

RE: Mersenne: K7 vs. x86

1999-08-23 Thread Willmore, David
From: Brian J. Beesley [SMTP:[EMAIL PROTECTED]] This is _still_ remarkable, since the "consumer" Athlons starting to trickle onto the market have 64-bit 100 MHz FSB and 512KB L2 cache, like PII / PIII / Xeon, but run their L2 cache at only 1/3 clock speed (c.f. full clock speed for Xeon

Re: Mersenne: K7 vs. x86

1999-08-22 Thread Jason Stratos Papadopoulos
On Sun, 22 Aug 1999 [EMAIL PROTECTED] wrote: For example, a typical complex radix-16 FFT pass in my Mlucas code takes 16 complex data (32 8-byte floats), and including multiplies by "twiddle" factors (FFT sincos data) does 168 FADDs and 88 FMULs on them- that's nearly twice as many adds as