This paper describes the integration of nested data parallelism into Fortran 90. Unlike flat data parallelism, nested data parallelism directly provides means for handling irregular data structures and certain forms of control parallelism, such as divideand-conquer algorithms, thus enabling the programmer to express such algorithms far more naturally. Existing work deals with nested data parall...

Notation is a powerful tool for leveraging our thinking. As an example, most people believe we can conceive of and express algorithms more effectively when we use a suitable computer programming language. It is clear that we lose some capabilities when inappropriately constrained by a language. It possible to accomodate different “paradigms” of thinking by choosing alternative notations or prog...

Today we see a healthy diversity of projects aiming to harness Java for scientific (or “Grande”) computing. A number of these approaches were reviewed in a recent article in this series. In this article we will focus instead on one particular project of this kind, ongoing at our labs in Indiana University. The HPJava project aims to support scientific and parallel computing in a modern object-o...

In this chapter we study an object-oriented implementation of procedures for eld recovery and recovery-based error estimation. The eld recovery is based on the superconvergent patch recovery technique by Zienkiewicz and Zhu. The core of the current implementation is problem independent, and is organized as a set of C++ classes based on the software library Diipack. The use of the developed prog...

— Over the years, large scientific code packages have been successfully developed using FORTRAN. Today, maintaining and extending these codes is a challenging task and often forbids several possibilities. Rewriting legacy code packages is almost prohibitive due to lacking resources and inertia against changing functional codes. One way of tackling these challenges is to integrate scripting lang...

Most parallel scientific programs contain compiler directives (pragmas) such as those from OpenMP [1], explicit calls to runtime library procedures implementing the Message Passing Interface (MPI) [2], or compiler-specific language extensions provided by CUDA [3]. By contrast, recent Fortran standards empower developers express algorithms without directly referencing lower-level programming mod...

The objective of this study is to present a mathematical modeling and solution approach for the drying process of spheroidal solids with the application of microwave in capillary porous media based on the Luikov equations, composed of a system of linear and coupled partial differential equations arising from the energy, mass and pressure balances inside the solid matrix. Additionally, the power...

In the present study, Computational Fluid Dynamics (CFD) techniques and Artificial Neural Networks (ANN) are used to predict the pressure drop value (Δp ) of Al2O3-water nanofluid in flat tubes. Δp  is predicted taking into account five input variables: tube flattening (H), inlet volumetric flow rate (Qi  ), wall heat flux (qnw  ), nanoparticle volume fraction (Φ) and nanoparticle diameter (dp ...

The optimal jet definition discovered in [1] purports to provide a final theoretical answer to the problem of finding the best jet definition. A practical version of the answer was provided in [2] in the form of a fortran-77 code; its beta (OJF_013) was available on the web at [3]. The first working version of the algorithm was first developed in the object-oriented language Component Pascal us...