Parallelization: pthreads or OpenMP?

Question

Most people in scientific computing use OpenMP as a quasi-standard when it comes to shared memory parallelization.

Is there any reason (other than readability) to u

Answer 1

You're question is similar to the question "Should I program C or assembly", C being OpenMP and assembly being pthreads.

With pthreads you can do much better parallelisation, better meaning very tightly adjusted to your algorithm and hardware. This will be a lot of work though.

With pthreads it is also much easier to produce a poorly parallelised code.