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computation load calculation

computation load calculation

computation load calculation

(OP)
Hi
I am implementing a controller but I want to compare it with some other by their calculation load.
what are the methods to do ti?
I am using matlab for design and simulation of the controller

thanks

RE: computation load calculation

(OP)
what do you mean by loop latency? (for loop)?
what is the correlation?
how should i do it?

thanks

RE: computation load calculation

I put the code I want to time in a loop and read a hard ware counter before and after the loop to find the time in micro or nano seconds. Then I divide by the number of times the code was execute.
Warning. If there is a cache this method will not work if the code in question will be flush out each iteration.
Counting clock cycles may work with a DSP but modern micro controllers have long pre-fetch queues and the timing of instructions may be altered by the execution of previous instructions.

Peter Nachtwey
Delta Computer Systems
http://www.deltamotion.com

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