PARMACS 6.0 Library Interface Specification

The library interface version 6.0 for the PARMACS portable message passing package with bindings for both ANSI C and Fortran 77 is presented. In comparison with the macros which are described in [1], the functionality of the library interface has been slightly enhanced, mainly to improve the scalability for large numbers of processes. At the same time, full backward compatibility with PARMACS 5.1 is preserved. Acknowledgements Many people have helped in the definition of PARMACS 6.0 by giving their comments on a draft version. In particular, we express our gratitude to Philippe d'Anfray (ONERA), Geoff Chesshire (IBM), Jim Cownie (Meiko), Stephan Gillich (Intel), Werner Hoehn (Convex), Tuomo Kauranne (ECMWF), Werner Krotz--Vogel (Pallas), Matthew Peters (IBM), and Hubert Ritzdorf (GMD). Contents 1 Contents 1 Rationale 3 2 The PARMACS Programming Model 3 2.1 PARMACS application phases : : : : : : : : : : : : : : : : : : : : : : : : : 4 3 Global Considerations 6 3.1 Naming Conventi..