Compiling Fortran 77D and 90D for MIMD Distributed-Memory Machines

We present an integrated approach to compiling Fortran 77D and Fortran 90D programs for efficient execution on MIMD 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. 1 Introduction Parallel computing on distributed-memory machines is very cost-effective, but it is hindered by both the difficulty of parallel programming and lack of portability of the resulting programs. We propose to solve this problem by developing the compiler technology needed to automate translation of Fortran D to different parallel architectures. Our goal is to establish a machine-independent programming model for data-parallel programs that is easy to use, yet performs with acceptable efficiency on different parallel architectures. Fortran D provides data decomposition spec..