C++ Tutorial => OpenMP: Parallel Sections

Example

This example shows how to execute chunks of code in parallel

std::cout << "begin ";
//    Start of parallel sections
#pragma omp parallel sections
{
    //    Execute these sections in parallel
    #pragma omp section
    {
        ... do something ...
        std::cout << "hello ";
    }
    #pragma omp section
    {
        ... do something ...
        std::cout << "world ";
    }
    #pragma omp section
    {
        ... do something ...
        std::cout << "forever ";
    }
}
//    end of parallel sections
std::cout << "end";

Output

begin hello world forever end
begin world hello forever end
begin hello forever world end
begin forever hello world end

As execution order is not guaranteed, you may observe any of the above output.

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C++ Concurrency With OpenMP OpenMP: Parallel Sections

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