Speed of a MATLAB code

Hello

How to calculate the speed of execution of a MATLAB Code?

Answer 1

[Walter Roberson]

If you want to time with specific inputs, on your system, as currently configured, with the current load, then you can use http://www.mathworks.com/matlabcentral/fileexchange/18798-timeit-benchmarking-function

If you are trying to do an analysis of how the time varies with the size of the inputs, then in the general case you cannot do that. "Order analysis" needs to be done algebraically and through use of theorems.

[kartheek]

Thanq Roberson. It worked.

Answer 2

[Iain]

You can measure the time taken to execute a chunk of code using "now", or tic and toc,

tic;

codegoeshere;

toc % prints the time taken to screen.

logtime(1) = now;

code_segment

logtime(2) = now;

code_segment

...

logtime(n) = now;

[kartheek]

Thanq very much Lian. The technique worked and gave me my desired results.