Author: Robert Hyatt
Date: 14:00:42 09/03/00
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On September 03, 2000 at 13:31:51, Alberto Rezza wrote: >On September 03, 2000 at 12:57:50, Robert Hyatt wrote: > >>Your PII/450 couldn't do 1/2 gigaflop if you bought ten of 'em and ran 'em all >>in parallel. The PC can sustain about 100mbytes/second of memory throughput. >>That is 25 million 32 bit floating numbers. How are you going to get 1/2 >>gigaflop??? > >Not so sure about that. Many, many years ago I wrote an assembly language inner >loop routine for Mandelbrot set computation. It kept all its data in the >internal stack of an 8087. At 4.77 MHz, it did almost 50 Kflop. And the 8087 >needed quite a few clock cycles for one of its flops! > >If I could find that program, I'd like to try it on the PII/450.. :) > >Alberto I think you will find that any application that needs a major fraction of a gigaflop is not going to be doing a billion floating point operations on 10 values. Hence the memory bandwidth requirement. There are several good benchmark programs that will give a FLOP rating. The PC won't get in the same room with 1/2 gigaflop...
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