针对你遇到的“undefined reference to omp_get_num_threads'”问题,这通常是由于编译器在链接阶段未能找到omp_get_num_threads`函数的定义。该函数是OpenMP库的一部分,用于获取当前使用的线程数。以下是根据你的提示,逐步分析和解决问题的建议: 确认omp_get_num_threads函数所属的库: omp_get_num_threads函数属于...
test.pyx文件: fromcython.parallel cimport parallel fromopenmp cimport omp_get_thread_num cpdefvoidlong_running_task1() noexcept nogil: whileTrue: pass cpdefvoidlong_running_task2() noexcept nogil: whileTrue: pass defdo_two_tasks(): cdefintthread_num withnogil,parallel(num_threads=2): thread_...
Theomp_get_num_threadscall returns 1 in the serial section of the code, so N1 is assigned the value 1. N2 is assigned the number of threads in the team executing the parallel region, so the output of the second print statement will be an arbitrary number less than or equal to the val...
from openmp cimport omp_get_thread_num cpdef void long_running_task1() noexcept nogil: while True: pass cpdef void long_running_task2() noexcept nogil: while True: pass def do_two_tasks(): cdef int thread_num with nogil, parallel(num_threads=2): thread_num = omp_get_thread_num() i...
omp_get_num_threadsPurpose Returns the number of threads currently in the team executing the parallel region from which it is called. Prototype int omp_get_num_threads (void); Parent topic: OpenMP runtime functions for parallel processing ...
int omp_get_num_threads (void); Purpose Returns the number of threads in the current region. Note The OpenMP Run-Time Library is available only in the LabWindows/CVI Full Development System. LabWindows/CVI determines the number of threads used for a parallel region by the following rules (in...
Returns the number of threads in the parallel region.複製 int omp_get_num_threads( ); RemarksFor more information, see 3.1.2 omp_get_num_threads Function.Example複製 // omp_get_num_threads.cpp // compile with: /openmp #include <stdio.h> #include <omp.h> int main() { omp_set_...
omp_get_num_threads函数返回当前线程的数目在执行调用的并行区域的团队。 格式如下所示: #include <omp.h> int omp_get_num_threads(void); num_threads子句、omp_set_num_threads功能和OMP_NUM_THREADS环境变量控制线程数。团队。 如果线程的数目尚未由用户显式设置,默认实现中定义。 此函数绑定到最接近的封闭...
若是不声明OMP_GET_THREAD_NUM,OMP_GET_NUM_THREADS那么不会得到正确的线程号和总线程数。 原因:??? (2) 但是如果在开头使用"use omp_lib",则不需要声明。 但是在某些程序中还是得到 线程数 线程号为浮点数的现象 ??? 原因:子程序里面没有重复声明use omp_lib....
The omp_get_thread_num function returns the number of the currently executing thread within the team. The number returned will always be between 0 and NUM_PARTHDS - 1. NUM_PARTHDS is the number of currently executing threads within the team. The master thread of the team returns a value ...