omp_get_wtime
double omp_get_wtime (void);
Purpose
Returns the elapsed wall clock time in seconds since an arbitrary, but consistent, point in the past.
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Note The OpenMP Run-Time Library is available only in the LabWindows/CVI Full Development System. |
The value this function returns is bound to the calling thread and is consistent for each thread; however, it is not guaranteed to be globally consistent across all other threads in the program.
Use this function to measure the time taken by a task, as shown in the following example:
double startTime;
double endTime;
startTime = omp_get_wtime();
...code representing work you want to time...
endTime = omp_get_wtime();
printf("This task took %f seconds\n", endTime - startTime);
Binding thread set: encountering thread
Parameters
None.
Return Value
| Name | Type | Description |
| returnValue | double | The elapsed wall clock time in seconds since an arbitrary, but consistent, point in the past. |
Additional Information
Library: OpenMP Run-Time Library
Include file: omp.h
LabWindows/CVI compatibility: LabWindows/CVI 2013 and later
Example
Refer to OpenMP\matrixmult.cws for an example of using the omp_get_wtime function.