OS 线程是否与不同 OpenMP 并行区域中的 thread_num 绑定？
Are OS threads tied to thread_num in different OpenMP parallel regions?
如果我有多个并行区域，这些并行区域中的给定线程索引（由 omp_get_thread_num() 返回）是否会使用同一个线程？
OpenMP标准（5.1版）未定义，除了主线程（主线程）遇到这两个部分（假设它们在您的应用程序中被同一个线程遇到）：
The thread that encountered the parallel construct becomes the primary thread of the new team, with a thread number of zero for the duration of the new parallel region.
请注意，如果您在并行部分使用 未绑定的任务，则这不可能成立：
The thread number may change during the execution of an untied task. The value returned by omp_get_thread_num is not generally useful during the execution of such a task region.
如果我有多个并行区域，这些并行区域中的给定线程索引（由 omp_get_thread_num() 返回）是否会使用同一个线程？
OpenMP标准（5.1版）未定义，除了主线程（主线程）遇到这两个部分（假设它们在您的应用程序中被同一个线程遇到）：
The thread that encountered the
parallelconstruct becomes the primary thread of the new team, with a thread number of zero for the duration of the newparallelregion.
请注意，如果您在并行部分使用 未绑定的任务，则这不可能成立：
The thread number may change during the execution of an untied task. The value returned by
omp_get_thread_numis not generally useful during the execution of such a task region.