在后续并行区域设置线程数,因此,除非重写由 num_threads 子句。复制 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。
Sets the number of threads in subsequent parallel regions, unless overridden by a num_threads clause.複製 void omp_set_num_threads( int num_threads ); Remarkswhere,num_threads The number of threads in the parallel region.RemarksFor more information, see 3.1.1 omp_set_num_threads Function....
{//++iteration;//std::cout << "iteration: " << iteration << " thread:" << omp_get_thread_num() << std::endl;//printf("Hello from thread %d, nthreads %d\n", omp_get_thread_num(), omp_get_num_threads());scenePoint=cloudWithNormalsDownSampled->points[referencePointsIndices->indi...
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(master thread)的ID为0。 说明: ...
Prototype void omp_set_num_threads (intnum_threads); Parameters num_threads Must be a positive integer. Usage If thenum_threadsclause is present, then for the parallel region it is applied to, it supersedes the number of threads requested by this function or theOMP_NUM_THREADSenvironment varia...
3. omp_set_num_threads()库函数的设置 4. OMP_NUM_THREADS环境变量的设置 5. 编译器默认实现(一般而言,默认实现的是总线程数等于处理器的核心数) 2、3、4优先级依次降低的,也就是前面的设置可以覆盖后面的设置,当然也是相对而言,num_threads子句只会影响当前的并行区域,而omp_set_num_threads对OMP_NUM_THR...
omp_set_num_threads总是返回0并且我无法通过omp_get_thread_num()获取线程数 - 我有一个C ++类库,它使用omp进行并行化。我注意到我的问题,它总是耗尽我的处理器上的所有核心,而不是omp_set_num_threads(threadCount)作为输入。 因此,在进行调查时,我意识到使nu
runtime environment returns 4 call OMP_SET_NUM_THREADS(iMaxThreads) ! set to 4 threads !$OMP PARALLEL DO PRIVATE(I) SHARED COUNT DO I=1,COUNT CALL FOO2(SOMETHING(I)) CALL FOO3(OTHERTHING(I)) END DO !$OMP END PARALLEL ... SUBROUTINE FOO2(X) call OMP_SET_NUM_THREADS(2) ! set...
如果omp_set_num_threads() 的参数不是正整数,则忽略调用。如果将 SUNW_MP_WARN 设置为 TRUE ,或者通过调用 sunw_mp_register_warn() 注册回调函数,则将发出警告消息。
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 using omp_set_num_threads. ...