Distribution Assignment Placement: Effective Optimization of Redistribution Costs
IEEE Transactions on Parallel and Distributed Systems
Optimization Under the Perspective of Soundness, Completeness, and Reusability
Correct System Design, Recent Insight and Advances, (to Hans Langmaack on the occasion of his retirement from his professorship at the University of Kiel)
From DFA-Frameworks to DFA-Generators: A Unifying Multiparadigm Approach
TACAS '99 Proceedings of the 5th International Conference on Tools and Algorithms for Construction and Analysis of Systems
VFC: The Vienna Fortran Compiler
Scientific Programming
Optimal interprocedural program optimization: a new framework and its application
Optimal interprocedural program optimization: a new framework and its application
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Avoiding unnecessary remappings at run-time by means of a strategic distribution assignment placement (DAP) is a major means for improving the run-time efficiency of data-parallel programs on distributed-memory architectures. In Proc. Euro-Par '97, pp. 364-73 (1997), we presented a novel and aggressive intraprocedural algorithm achieving this by eliminating partially redundant and partially dead distribution assignments. In this paper, we show how to enhance this approach interprocedurally. Surprisingly at first sight, it turns out that a straightforward adaption of the intraprocedural approach fails because central properties being valid for the intraprocedural case do not carry over to the interprocedural one, revealing severe anomalies. After discussing the essential differences and analogies of DAP in the interprocedural and interprocedural cases, we show how to overcome these anomalies in order to arrive at a powerful and flexible approach for interprocedural DAP (IDAP). As in the interprocedural case, we get a hierarchy of IDAP algorithms of varying power and efficiency supporting user-customized solutions. First practical experiences underline its importance and effectivity.