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Heterogeneous Programming with Java: Gourmet Blend or just a Hill ...

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Heterogeneous Programming with Java: Gourmet Blend or just a Hill of Beans?Page 1Heterogeneous Programming with Java:Gourmet Blend or just a Hill of Beans?Charles C. Weems Jr.Department of Computer ScienceUniversity of MassachusettsAmherst MA 010034610weems@cs.umass.eduAbstractThe heterogeneous parallel processing community haslong been struggling to bring its approach to computationinto the mainstream. One major impediment is that nopopular programming language supports a sufficientlywide range of models of parallelism. The recent emergenceof Java as a popular programming language may offer anopportunity to change this situation. This article beginswith a review of the special linguistic and computationalneeds of heterogeneous parallel processing by consideringthe user communities that would benefit most from theapproach. It then reviews the pros and cons of Java as alanguage for expressing and realizing heterogeneity andconcludes with some possible changes that would makeJava more suitable for such use.1. Heterogeneous Programming: WhoNeeds It?Before we look at the relationship between Java andheterogeneous programming we should first review whatis involved in programming heterogeneous systems:where are they used and how? Once we identify therequirements for supporting software development forheterogeneous systems we have a better basis for judgingthe applicability of a programming language. Whatfollows is not meant to be an exhaustive survey of thefield but merely a discussion of some wellknownexamples to motivate the identification of a set ofrequirements.There are three basic reasons for writing programsthat involve heterogeneous parallelism: because we needto use heterogeneous hardware because our problem isinherently heterogeneous in nature or because we are facedwith some combination of the two. In practice there aremany gray areas between these distinc ...

Source: ipdps.cc.gatech.edu

 

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