MPI is a de facto standard for portable parallel programming using a message passing paradigm. Interest is growing in other paradigms, in particular Partitioned Global Address Space (PGAS) languages such as Coarray Fortran, UPC and Titanium. Most Computational Science and Engineering codes are written in Fortran, and the 2008 Fortran standard will include coarrays, a Cray initiated PGAS extensi...

The purpose of the thesis is to determine whether Java, a programming language that evolved out of a research project by Sun Microsystems in 1990, is suitable for solving large sparse linear systems using direct methods. That is, can performance comparable to the language traditionally used for sparse matrix computation, Fortran, be achieved by a Java implementation. Performance evaluation crit...

Co-Array Fortran is a parallel programming language for scientific applications that provides a very intuitive mechanism for communication, and especially, one-sided communication. Despite the benefits of this integration of communication primitives with the language, analyzing the performance of CAF applications is not straightforward, which is due, in part, to a lack of tools for analysis of ...

This dissertation is concerned with efficient compilation of our Java-based, highperformance, library-oriented, SPMD style, data parallel programming language: HPJava. It starts with some historical review of data-parallel languages such as High Performance Fortran (HPF), message-passing frameworks such as p4, PARMACS, and PVM, as well as the MPI standard, and high-level libraries for multiarra...

The astrophysics community uses different tools for computational tasks such as complex systems simulations, radiative transfer calculations or big data. Programming languages like Fortran, C or C++ are commonly present in these tools and, generally, the language choice was made based on the need for performance. However, this comes at a cost: safety. For instance, a common source of error is t...

VPP Fortran is a data parallel language, that has been designed for the VPP series of supercomputers. In addition to pure data parallelism, it contains certain low-level features that were designed to extract high performance from user programs. A comparison of VPP Fortran and HPF 2.0 shows that these low-level features are not available in HPF 2.0. The features include asynchronous inter-proce...

Distributed-memory systems are powerful tools for solving large-scale scientiic and engineering problems. However these machines are diicult to program since the data have to be distributed across the processors and message-passing operations must be inserted for communicating non-local data. In this paper, we discuss SUPERB and Vienna Fortran, two related developments with the objective of pro...

f2mma program can be used for translation a program written in some subset of the FORTRAN language into Mathematica programming language. This subset have been enough to translate GAPP (Global Analysis of Particle Properties) program into Mathematica language automatically. A table with Standard Model observables calculated with GAPP(Mathematica) is presented.

This research was initiated to learn what the crop modeling community could do to facilitate an evolution from existing crop models toward more modular ones that can meet increasing demands. Specific objectives are to 1) use UML to design and implement a modular crop model using an object oriented language, and 2) to compare the characteristics of this model and its development with a modular m...