1 Overview

The ADAPTOR compilation system package consists of:

• the source to source transformation tool ,
• the ADAPTOR runtime system that handles descriptors for arrays, sections, and distributions, and provides communication and synchronization routines,
• the compiler driver ,
• documentation,
• and example and test programs.

Figure 1: ADAPTOR Fortran compilation system.

Figure 1 shows how the different components work together. The compiler driver adaptor invokes the source-to-source translation fadapt that translates or instruments a (parallel) Fortran program and generates a new Fortran program with calls to the runtime system. Afterwards, the driver invokes a native FORTRAN 77 or Fortran 90 compiler to compile the generated code. Finally, the compiled codes are linked with the LIBADP runtime system and the utilized MPI and/or Pthreads library.

The latest version of ADAPTOR can be used for the following purposes:

• ADAPTOR translates an HPF [Hig97] program into an equvialent parallel program based on MPI [SOHL$^+$96] and/or PThreads [NBFF96]. Furthermore, HPF parallelism can be used to optimize a program for cache architectures.
• ADAPTOR can be used to compile OpenMP [The97] Fortran programs to parallel programs using PThreads.
• ADAPTOR can be used to instrument all kind of Fortran programs and to collect performance data (hardware performance counters) that can be related back to the source code.