Abstract
We are currently developing an integrated tool environment for multicomputer as part of the Joint CSCS-ETH/NEC Collaboration in Parallel Processing. As we design and implement a sequence of tool prototypes these are used and evaluated by a team of application developers. This close interaction allows rapid feedback, as requests from the application developers for functionality enhancements can be promptly considered for inclusion in future tool designs and prototypes.
Our tool environment, Annai, consists of an extended High Performance Fortran (HPF) compiler, a performance monitor and analyzer, and a source-level debugger for distributed programs, all sharing a common user interface. The recently-defined Message Passing Interface (MPI) serves as our low-level machine interface and allows portability independent of the target hardware architecture. The key features of the tool environment comprise HPF language extensions to allow dynamic data distributions, and support for both high-level data-parallel and low-level message-passing programming paradigms by the interactive debugger and the interactive performance monitor and analyzer. The language extensions are particularly useful for the efficient parallelization of unstructured problems, and they are fully supported by both the debugger and performance analyzer.
To introduce the Annai tool environment, its structure is outlined and the functionality of its components summarized. New features currently in development (since [1]) are highlighted, based on suggestions provided by our pilot users and their experiences using Annai. Finally, an example user session is demonstrated and preliminary performance results presented from two multicomputer.
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Clémençon, C., Endo, A., Fritscher, J., Müller, A., Rühl, R., Wylie, B.J.N. (1996). Annai: An Integrated Parallel Programming Environment for Multicomputers. In: Zaky, A., Lewis, T. (eds) Tools and Environments for Parallel and Distributed Systems. The Springer International Series in Software Engineering, vol 2. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-4123-3_3
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