Lpc2000

sorry I mistook Dhrystone/seconds (on your results)
for DMIPS. My results are after dividing it by 1757.

Then it looks like I have seen better numbers using
GCC. And 49 DMIPS with SDT -- is close to 54 DMIPS
advertised by Philips. I remember verifying my results
against numbers advertise by ARM a year ago & it was
close enough.

Cheers,
-Mike.

--- Michael Anburaj <embeddedeng@...> wrote:
> Hi Thiadmer,
> 
> I am curious about your results.
> 
> I ran Dhrystone 2.1 on LPC2106 board a year ago.
> 
> Results:
>
http://geocities.com/michaelanburaj/downloads/dhry_lpc.gif
> 
> I am heavy user of GCC tools (ARM, MIPS & other
> 32/64
> bit RISCs). I run Dhrystone as apart of board
> bringup
> each time I start with a new board/processor (always
> with \ufffdO2 option) \ufffd same code. So, I always code a 1
> second granularity timer function to make
> measurements
> & there is timer sync. loop at the beginning. I make
> measurements over large iterations to get accurate
> results. I believe 10,000,000 iterations should give
> fairly accurate results across different processor
> platforms.
> 
> The only difference I see is I have used GCC 3.4.0 &
> you used 3.4.3
> Still 41 against 51 \ufffd in ARM mode & 35 against 44 \ufffd
> in
> Thumb mode is huge.
> 
> Moving to 3.4.3 give better performance?
> 
> Thanks,
> -Mike.
> 
> --- ukkie9a <docent@...> 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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