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| <a name="OMP_005fNUM_005fTHREADS-_002d_002d-Specifies-the-number-of-threads-to-use"></a> |
| <h3 class="section">3.7 <code>OMP_NUM_THREADS</code> – Specifies the number of threads to use</h3> |
| <a name="index-Environment-Variable-6"></a> |
| <a name="index-Implementation-specific-setting-1"></a> |
| <dl compact="compact"> |
| <dt><em>Description</em>:</dt> |
| <dd><p>Specifies the default number of threads to use in parallel regions. The |
| value of this variable shall be a comma-separated list of positive integers; |
| the value specified the number of threads to use for the corresponding nested |
| level. If undefined one thread per CPU is used. |
| </p> |
| </dd> |
| <dt><em>See also</em>:</dt> |
| <dd><p><a href="omp_005fset_005fnum_005fthreads.html#omp_005fset_005fnum_005fthreads">omp_set_num_threads</a> |
| </p> |
| </dd> |
| <dt><em>Reference</em>:</dt> |
| <dd><p><a href="http://www.openmp.org/">OpenMP specification v4.0</a>, Section 4.2 |
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