Lpc2000

Great work Thiadmer!

I personally ignore benchmarks because most of the time the results are 
skewed one way or another, and rarely are the test parameters and raw 
results publicized.

If anyone from Keil is lurking on this list I would highly recommend 
responding. It either appears that your techs borked the tests or used 
some sort of 'invalid' test setup. In either case I recommend re-running 
the tests, and this time providing the raw tests results. In case you made 
a mistake I would suggest an apology on your web site.

On a side note, I use GNU tools not because of the speed/power (either for
or against) however because of the openness of the source. I have used
many closed-source tools and each vendor has let me down at least once
with support (no matter what large or small company I worked for). With 
GNU I can always take a look at the source in case of a problem. And (more 
importantly!) I can choose WHATEVER OS I want for development thanks to 
having source for all the tools.

On another side note: at work I work with QNX, and guess what their 
compiler is? It's referred to as 'qcc' yet in fact it is GCC (2.95.3 and 
3.3 at the moment). Many other closed source vendors in fact use GCC, yet 
don't necessarily publicize the fact. So if anyone ever thinks GCC is not 
'good enough' for real embedded development, think again!

- Rod

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On Wed, 4 May 2005, ukkie9a wrote:

> Hello everyone,
>
> To satisfy my curiosity (and verify the code generation of the GNU
> compiler), I repeated the Dhrystone benchmark with GNU GCC after
> reading the tables in the (otherwise nice book) "The Insider's Guide
> to the Philips ARM7-Based Microcontrollers" by Trevor Martin (see
> http://www.hitex.co.uk/arm/lpc2000book/index.html) and finding the
> same table on KEILs web site.
>
> My results, which you can read about on
> http://compuphase.com/dhrystone.htm, differ from the published results
> by a factor of 5!
>
> Kind regards,
> Thiadmer Riemersma
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