How to find computational time?

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sanjai
sanjai 2021-12-12
回答： Nasser Almabrok 2024-2-9
I want to find the computation time for the Add in below code. How can I do that? Is there any command?
I can use tic & toc which will give the elapsed time. but I want to find computation / execution time.
Does anyone know? Please help me.
Matlab code
A=[1 2 3 4 56 7 8 9];
B=[7 8 9 4 55 1 2 3];
tic
for i=1:length(A)
Add(i) = A(i)+ 2* B(i);
end
toc
  1 个评论
Image Analyst
Image Analyst 2021-12-12
What is the difference between elapsed time and computation time? Of course your computer is also doing all kinds of stuff in the background and I'm not sure we can figure out the percentage of time it spent on only your MATLAB code. But what does it matter? It's the elapsed time that really matters in the real world, right?

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采纳的回答

KSSV
KSSV 2021-12-12
编辑：KSSV 2021-12-12
Ran in:
Read about tic toc.
t1 = tic ;
A=[1 2 3 4 56 7 8 9];
B=[7 8 9 4 55 1 2 3];
for i=1:length(A)
Add(i) = A(i)+ 2* B(i);
end
t1 = toc(t1)
t1 = 0.0289
Also read about profilier and timeit.

更多回答（2 个）

Les Beckham
Les Beckham 2021-12-12
You might be looking for cputime()
Nasser Almabrok
Nasser Almabrok 2024-2-9
I think you are looking for the time taken for the process to finish or to stop for one cycle. tic toc is your answer.

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