Computer Chess Club Archives


Search

Terms

Messages

Subject: Report from the field. (slightly OT)

Author: Hristo

Date: 01:50:22 02/09/02


Here is a report from the field.
Exactly one week ago I bought a Mac. My very first Mac.
A dual 1GHz G4 + 1GRam and all the other normal stuff.
I’m absolutely impressed!!! After the initial shock of everything being new and
different I must admit that this is the easiest “thing” to use, administer,
configure and it is by far the prettiest interface and hardware out there. I
still have the AMD and Intel boxez (indeed) but they have not seen much use
lately. The only drawback, which to me is significant, is that linux+XWindows
doesn’t run on this Mac (yet). The video card ... again, other than that
Yellowdog linux boots just fine.

The interesting thing is that the G4-1GHz outperforms the PIII-1GHz, P4-1.8GHz
and Xeon 1.7GHz. My test was an FFT routine (class) I use at work. The code is
not optimized in any shape or form for the G4. The worst case is when doing
64K-samples FFT (using floats).

G4 - 18 fft/sec
Xeon 1.7 - 6.04 fft/sec
P4 1.8 - 5.93 fft/sec
pIII 1 - 5 fft/sec

Yes ... the cache got the best out of the Intel Chipsen. ;-)
Until this point the G4 was still better than the rest of them. All of the CPUs
scaled “n log(n)” in the range of 1K-...-32K samples.

If interested I can send you the source code to test yourself.

It, almost, seems that one can write a chess program using “float” instead of
“int” and still get the same performance.

BTW
Does anyone have test(s) you would like to try on a G4?! If reasonable I might
do it.

Regards.
hristo



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.