On Wed, 2011-10-12 at 12:43 +0200, pascal boulet wrote: > I am not familiar with the openMP parallelization. I would > like to know in what circumstances openMP is worth being used? > Same question for MPI+openMP.
Right now, OpenMP alone is seldom faster than MPI, but MPI+OpenMP is very useful for large calculations on machines like IBM BlueGene P. -- Paolo Giannozzi, IOM-Democritos and University of Udine, Italy
