Jppal: Java parallel programming annotation library

This paper describes an annotation language for parallel program-ming. This language is completely implemented as a library of aspects, in AspectJ, and mimics the semantics of the OpenMP standard. We discuss the language implementation and the difficul-ty in implementing certain constructs of the OpenMP standard, as well as possible workarounds. Performance is close to the one ob-tained with Java threads, but it requires much less programming effort, although, in certain cases, a refactoring to the original code is required