Compiling Fortran 77D and 90D for MIMD distributed-memory machines

Abstract

The authors present an integrated approach to compiling Fortran 77D and Fortran 90D programs for efficient execution on MIMD (multiple-instruction multiple-data) distributed-memory machines. the integrated Fortran D compiler relies on two key observations. First, array constructs may be scalarized into FORALL loops without loss of information. Second, loop fusion, partitioning, and sectioning optimizations are essential for both Fortran D dialects. A portable run-time library can also reduce the complexity and machine-dependence of the compiler. All optimizations except coarse-grain pipelining and data prefetching have been implemented in the current Fortran D compiler prototype.<>