OpenMP functions in static library

AdamD85 — Wed, 28 Sep 2011 18:16:11 GMT

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 ?

OpenMP functions in static library

Olga_M_Intel — Thu, 29 Sep 2011 07:29:01 GMT

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.

topic OpenMP functions in static library in Intel® Moderncode for Parallel Architectures

OpenMP functions in static library

OpenMP functions in static library