This was one of the question asked at SC 08. I will try to answer that here. I will start and add more as I move through the various topics.

OpenMP 3.0 had better support for C++ in the following areas:

• Parallelization of RandomAccess Iterator loops with strict canonical operators
• Threadprivatization of static class members
• Unsigned loop control variable support
• Fully specify constructor call requirement in private/first/lastprivate/threadprivate
• better match with the C++0x memory model

For-Worksharing with Iterator loops:

We specifically enabled C++ RandomAccess iterators and C pointeres to be parallelized with explicit directives.

#include <vector>
void iterator_example()
{
   std::vector<int> vec(23);   
   std::vector<int>::iterator it;   
   #pragma omp parallel for default(none) shared(vec)   
   for (it = vec.begin(); it < vec.end(); it++)   
   {   
     // do work with *it //   
   }
}

I will follow up with more examples.

Tags:  openmp cppcafe memory_model c++0x