OMP_GET_MAX_THREADS 目的: 获取通过OMP_GET_NUM_THREADS能够得到的最大线程数量。 说明: 1.通常这个最大数量由omp_set_num_threads()或OMP_NUM_THREADS环境变量决定。 2.可以在串行或并行区域调用。 OMP_GET_THREAD_NUM 目的: 获取线程在team内的ID,返回值在0到omp_get_num_threads()-1之间。主线程(maste...
void omp_set_num_threads( int num_threads ); 备注 其中, num_threads 线程数在并行区域。 备注 有关更多信息,请参见3.1.1 omp_set_num_threads功能。 示例 有关使用示例 omp_set_num_threads参见omp_get_num_threads。 请参见 概念 OpenMP功能...
如果從程式的一部分呼叫,omp_in_parallel函數會傳回非零值,這個函式的行為是未定義。 這個呼叫的優先順序必高於OMP_NUM_THREADS環境變數。 預設值,可能會藉由呼叫建立的執行緒數目的omp_set_num_threads或藉由設定OMP_NUM_THREADS環境變數,可明確地覆寫單一平行指示詞指定num_threads子句。
针对你遇到的“undefined reference to omp_set_num_threads'”问题,这通常是由于编译器在链接阶段未能找到omp_set_num_threads`函数的定义。该函数是OpenMP库的一部分,用于设置并行区域中使用的线程数。以下是针对此问题的详细分析和解决步骤: 确认omp_set_num_threads函数的来源: omp_set_num_threads函数属于OpenM...
omp_set_num_threads() の引数が正の整数ではない場合、呼び出しは無視されます。 SUNW_MP_WARN が TRUE に設定されているか、 sunw_mp_register_warn() の呼び出しによりコールバック関数が登録されている場合には、警告メッセージが表示されます。
Overrides the setting of the OMP_NUM_THREADS environment variable, and specifies the number of threads to use for a subsequent parallel region by setting the first value of num_list for OMP_NUM_THREADS. Prototype void omp_set_num_threads (int num_threads); Parameters num_threads Must be a...
threads to use. However, when dynamic adjustment of the number of threads is disabled,omp_set_num_threadssets the exact number of threads to use in the next parallel region. If the number of threads you request exceeds the number your execution environment can support, your application will ...
#include <omp.h> void omp_set_num_threads(int num_threads); The value of the parameternum_threadsmust be a positive integer. Its effect depends upon whether dynamic adjustment of the number of threads is enabled. For a comprehensive set of rules about the interaction between theomp_set_num...
void omp_set_num_threads( int num_threads ); Remarks where, num_threads The number of threads in the parallel region. Remarks For more information, see3.1.1 omp_set_num_threads Function. Example Seeomp_get_num_threadsfor an example of usingomp_set_num_threads. ...
The omp_set_num_threads routine specifies the number of threads to use for the next parallel region by setting the first value of num_list for the OMP_NUM_THREADS environment variable. The number_of_threads_expr argument is evaluated, and its value is used as the number of threads. If ...