Specifies the number of threads to use in a parallel region.
Linux and macOS:
- Is the number of threads to use. It must be a positive integer.
- The number of threads to use is determined by the run-time environment.
This option specifies the number of threads to use in a parallel region.
It has the same effect as environment variable OMP_NUM_THREADS.
This option overrides the environment variable when both are specified.
This option only has an effect if the following is true:
- You have specified option[Q]paralleloroption.[q or Q]openmp(or both)
- You are compiling the main program.