The GRED graphical editor for the GRADE parallel program development environment

摘要

In this paper, we describe a graphical editor GRED as a part of the integrated programming environment GRADE that is intended to support designing, debugging and performace tuning of message-passing programs running on a heterogeneous network of computers. The GRED editor hides the cumbersome details of the underlying low-level message-passing system (network can be either PVM or MPI) by providing visual abstractions but allows the programmer to define local computations of the individual process sin C (or in Fortran in the future) independently form the visually supported process management and inter-process communication activities. Visual representation of the critical (i.e. message-passing related) parts of the code can help the user in grasping the complex structure and run-time behavior of the whole parallel application, even if the or she is not an expert in the field of concurrent programming.