Sturla Molden <sturla.mol...@gmail.com> wrote: > Cython actually requires that there is a shared address space, and it > invokes something that strictly speaking has undefined behavior under the > OpenMP standard. So thus, a prange block in Cython is expected to work > correctly on a laptop with a multicore processor, but it is not expected to > work correctly on a cluster.
OpenMP does not guarrantee that dereferencing a pointer in a parallel block will dereference the same object across all processors. It only guarrantees that the value of a shared object can be synchronized. There are many who use OpenMP and think only in terms of threads that do this incorrectly. Cython is actually among those. S.M. _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org https://mail.scipy.org/mailman/listinfo/numpy-discussion
