OMP_NUM_THREADS
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Sets the maximum number of threads in the parallel region, unless overridden by omp_set_num_threads or num_threads.
Syntax
set OMP_NUM_THREADS[=num]
Remarks
where,
num
The maximum number of threads you want in the parallel region, up to 64 in the Visual C++ implementation.
Remarks
The OMP_NUM_THREADS environment variable can be overridden by the omp_set_num_threads function or by num_threads.
The default value of num in the Visual C++ implementation of the OpenMP standard is the number of virtual processors, including hyperthreading CPUs.
For more information, see 4.2 OMP_NUM_THREADS.
Example
The following command sets the OMP_NUM_THREADS environment variable to 16:
set OMP_NUM_THREADS=16
The following command displays the current setting of the OMP_NUM_THREADS environment variable:
set OMP_NUM_THREADS