OpenMP functions in static library

[AdamD85]

If I use openmp commands such as:

int nthreads, tid;

#pragma omp parallel private(tid)
  {

  /* Obtain and print thread id */
  tid = omp_get_thread_num();
  printf("Hello World from thread = %d\\n", tid);

  /* Only master thread does this */
  if (tid == 0) 
    {
    nthreads = omp_get_num_threads();
    printf("Number of threads = %d\\n", nthreads);
    }

  }  /* All threads join master thread and terminate */

in my main project they work properly (I have 4 cores, and four threads are shown).


BUT if create a static library and THE SAME commands are used in some function of from this static library program shows only 1 thread available.

Why is that ?

[Olga_M_Intel]

Make sure that you use the proper compiler option to compile your code with OpenMP pragmas: "-openmp" on Linux and "/Qopenmp" on Windows.

You might not notice any problems while compiling your code because the compiler just emits the warning about unrecognized pragma but not the error.