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Is there actually a difference between two tight loop parallelization OpenMP pragmas ?

Dear collegues,

Is there actually a difference between :

#pragma omp parallel for
for (int i = 0; i < 10; i++)
{
      /* **** */
}

AND

#pragma omp parallel
{
      int i;
      #pragma omp for private(i)
      for (i = 0; i < 10; i++)
      {
            /********/
      }
}
      

     

    

Is there any difference between using different synchronization objects supported by OpenMP and Win32api ?

Dear collegues,

Is there any difference between using :

omp_set_lock(...), omp_unset_lock(...),

Win32api EnterCriticalSection(&cs), LeaveCriticalSection(&cs)

#pragma omp critical { }

Thanks in advance.

Cheers, Arthur.

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