How to calculate execution time of for loop inside the Math function block?

Question

Abdul Mannan Dadu 2016-11-14

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/312127-how-to-calculate-execution-time-of-for-loop-inside-the-math-function-block

评论： Walter Roberson 2016-11-18

for k = 1:16
    state=[  1  0  1  0  1  0  1  0  ;  
            1  0  1  0  1  0  0  1  ;  
            1  0  1  0  0  1  1  0  ;  
            1  0  1  0  0  1  0  1  ;  
            1  0  0  1  1  0  1  0  ;  
            1  0  0  1  1  0  0  1  ;  
            1  0  0  1  0  1  1  0  ;  
            1  0  0  1  0  1  0  1  ;  
            0  1  1  0  1  0  1  0  ;  
            0  1  1  0  1  0  0  1  ;  
            0  1  1  0  0  1  1  0  ;  
            0  1  1  0  0  1  0  1  ;  
            0  1  0  1  1  0  1  0  ;  
            0  1  0  1  1  0  0  1  ;  
            0  1  0  1  0  1  1  0  ;  
            0  1  0  1  0  1  0  1  ];
      Si1=state(k,1);
      Si3=state(k,3);
      Si5=state(k,5);
      Si7=state(k,7);
  .............
  .................
    g = abs(irefa-io_p_a) + abs(irefb-io_p_b) + abs(irefc-io_p_c)+lambda_sw*abs(Si7-Si7_prev);
      if (g<g_opt)
  .............
  ..........
      end
  end

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Answer 1

Grégory SEABRA 2016-11-14

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https://ww2.mathworks.cn/matlabcentral/answers/312127-how-to-calculate-execution-time-of-for-loop-inside-the-math-function-block#answer_243216

Hi,

have you tried using tic & toc functions?

https://fr.mathworks.com/help/matlab/ref/tic.html?s_tid=srchtitle

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Grégory SEABRA 2016-11-18

If you use the tic toc fonctions in a math function block, you must output the toc result out of this block, otherwise you won't be able to visualize it as you put ";" after them..

Furthermore, you might not be able to simulate in accelerator or rapid accelerator mode because it generate code from this function...

Walter Roberson 2016-11-18

Are you using any accelerator mode other than "normal"? Or are you trying to deploy to a hardware device, and if so then which one?

We need this information in order to be able to figure out the appropriate replacement timing mechanism for your situation. We could tell you to just toss in the coder.extrinsic('tic') and coder.extrinsic('toc') like in the error message, but that will only work for the "normal" and "accellerator" mode and not for rapid accelerator mode and not for deployment to hardware.

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