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Re: [lpc2000] Re: LPC2214 MIPs?

2004-12-20 by onestone

Real MIPS as opposed to virtual MIPS perhaps? I have a different measure 
of processor capability, being biased towards low power consumption. 
Thats is given task A how long does it take to complete the task, and 
what is the current consumption during execution. This gives you time at 
a known current so divide seconds by time, and multiply the mean current 
by this and you get something like:-

A 256 tap FIR with precision of n bits requires XMa/second.

The FIR could be replaced with an FFT, or any function that the current 
design needs, that is critical

Far more meaningful to me than MIPS, MHz clock, MFLOPS etc. Knowing the 
FIR code allows me to rapidly assess the capabilities of the system, and 
its suitability in any given design, since I also know the absolute 
execution time of the function being tested, and I can then customise 
the test for any app.

Al

lpc2100_fan wrote:

> 
> ???  REAL MIPS ????
> 
> We probably all agree (at tleast those who have been dealing with
> benchmarks ans MIPS numbers) that MIPS is probably the most useless,
> yet most use measure for performance. However, "real MIPS" is
> something new to me. How would you propose to measure them?
> 
> Somewhat useful benchmarks are those from EEMBC (www.eembc.org) but
> these benchmarks are also meaningless for lower end architectures like
> the ARM7 because they obviously focus on latest and greatest chips or
> simulations, nothing that you or I might actually use today.
> 
> Cheers, Bob
> 
> --- In lpc2000@yahoogroups.com, "Paulo de Almeida" <listas@a...> wrote:
>  >
>  >
>  > Hi,
>  >
>  > How fast can the LPC2214 go in term of real MIPs (not
>  > Drystone MIPs) with a 60Mhz clock ?
>  >
>  > Thanks
>  >
>  > Paulo A.
> 
> 
> 
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