Processor balance (was Re: Welcome and VME)

From: Eric J. Korpela <korpela_at_ellie.ssl.berkeley.edu>
Date: Thu Nov 16 16:16:09 2000

> > The only way to get any cross-platform numbers is to go for the lowest
> > common denominator because it is impossible to predict how the
> > hypothetical target machine is architected. Something like
> > Drystones/whetstones, Flops, mbits_at_sec for hard disks, mpixels_at_sec for
> > video.
>
> <START TIMER>
>
> FOR X = 1 to 1000000
> LET A = A + !
> NEXT X
>
> <STOP TIMER>

Ahl's simple benchmark is the way to go.

10 rem Ahl's simple benchmark
20 for n = 1 to 100: a = n
30 for i = 1 to 10
40 a = sqr(a): r = r + rnd(1)
50 next i
60 for i = 1 to 10
70 a = a^2: r = r + rnd(1)
80 next i
90 s = s + a: next n
100 print abs (1010-s/5)
110 print abs (1000-r)

I remember being pleased that my Epson Equity II came in at 12 seconds
in GW-basic. The machine on my desk doesn't have a basic interpreter.
Compiled it comes in at about 0.00075 second.

Eric
Received on Thu Nov 16 2000 - 16:16:09 GMT