Matlab Wall Clock Time

Total elapsed wall clock time.

Matlab wall clock time.

The documentation page to which you linked is for the simulink source block not the function in matlab. Use the wall clock time directly from the processor. The mex files that are used by the s function block are created using c source. T cputime returns the total cpu time used by matlab since it was started.

The documentation for the matlab function clock describes exactly what the elements of that vector represent. There will always be some jitter when attempting soft real time on a non real time operating system like windows standard linux or macos. Each call to cputime returns the total cpu time used by matlab up to the point when the function is called. Maximumwallclock is a property of a configset object.

To measure the cpu time used to run your code place two calls to cputime before and after the code and then calculate the difference between the returned values. The returned cpu time is expressed in seconds. Knowing the execution time of your matlab. A simulation stops when it meets any of the criteria specified by stoptime maximumnumberoflogs or maximumwallclock however if you specify the outputtimes property of the solveroptions property of the configset object then.

Each call to cputime returns the total cpu time used by matlab up to the point when the function is called. However if i measured it using a stopwatch i got 27 sec as the time. Example c tf clock returns a second output argument that is 1 true if the current date and time occur during daylight saving time dst in your system s time zone and 0 false otherwise. To measure the cpu time used to run your code place two calls to cputime before and after the code and then calculate the difference between the returned values.

The clock function calculates the current date and time from the system time. Cputime returns the total cpu time in seconds used by your matlab application from the time it was started. This property sets the maximum elapsed wall clock time seconds criteria to stop a simulation. This option is the most computationally expensive measurement and has the most impact on.

Because of this there is very little or no drift over many seconds. The returned cpu time is expressed in seconds. Useful clock resolution is around 10ms on windows machines and better in linux or macos. I tried to measure the time taken by a program to execute in matlab by using the tic and toc function.

I am trying to simulate a model using the simulink desktop real time in external mode and as mentioned in the title i have an s function block. Sometimes your power savings settings or use of multiple processors influence this measurement timer real use system time reported by the operating system.