“Embarrassingly parallel execution” means that it parallelizes (only) problems that are embarrassingly parallel. The meaning is clear — if you want to be really

“Embarrassingly parallel execution” means that it parallelizes (only) problems that are embarrassingly parallel. The meaning is clear — if you want to be really pedantic about it, problems are “parallelizable” and only execution is “parallel”, but “embarrassingly parallelizable” is too many syllables.