Nestor can be used by researchers interested by parallelizing compilers, performance analysis tools or more generally by source code optimizers. By using the front-end of an excellent HPF compiler from the public domain, Adaptor (written by T. Brandes), we have built a system that gives an intermediate representation of an Fortran 77/95/HPF 2.0 source code under the form of a hierarchical collection of C++ objects. Under this form, the code can be analyzed, transformed and unparsed in Fortran 77/95 + HPF 2.0, OpenMP, CrayMP, SunMP very easily.

Automatic parallelization consists in transforming automatically a sequential program to a parallel program, for instance Fortran 77 or Fortran 90 to High Performance Fortran (HPF). The goal of Nestor is to provide a programming environment to build systems that transform programs. Furthermore, Nestor already integrates a set of algorithms that detect parallelism into loop nests and automatically transform sequential Fortran into HPF.