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DOE OSTI · 1030209

Multi-language Struct Support in Babel

Ebner, D·Prantl, A·Epperly, T W
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Abstract

Babel is an open-source language interoperability framework tailored to the needs of high-performance scientific computing. As an integral element of the Common Component Architecture (CCA) it is used in a wide range of research projects. In this paper we describe how we extended Babel to support interoperable tuple data types (structs). Structs are a common idiom in scientific APIs; they are an efficient way to pass tuples of nonuniform data between functions, and are supported natively by most programming languages. Using our extended version of Babel, developers of scientific code can now pass structs as arguments between functions implemented in any of the supported languages. In C, C++ and Fortran 2003, structs can be passed without the overhead of data marshaling or copying, providing language interoperability at minimal cost. Other supported languages are Fortran 77, Fortran 90, Java and Python. We will show how we designed a struct implementation that is interoperable with all of the supported languages and present benchmark data compare the performance of all language bindings, highlighting the differences between languages that offer native struct support and an object-oriented interface with getter/setter methods.

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97 MATHEMATICS AND COMPUTING99 GENERAL AND MISCELLANEOUSBENCHMARKSCOMPUTER ARCHITECTUREFORTRANIMPLEMENTATIONJAVAPARALLEL PROCESSINGPERFORMANCEPROGRAMMING LANGUAGES

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Ebner, D, Prantl, A, Epperly, T W. 2011-03-22. Multi-language Struct Support in Babel. https://www.osti.gov/biblio/1030209

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