Proceedings of the 22nd International Conference on Parallel Architectures and Compilation Techniques (1998)
Oct. 12, 1998 to Oct. 18, 1998
In order to achieve practical efficient execution on a parallel architecture, a knowledge of the data dependencies related to the application appears as the key point for building an efficient schedule. By restricting accesses in shared memory, we show that such a data dependency graph can be computed on-line on a distributed architecture. The overhead introduced is bounded with respect to the parallelism expressed by the user: each basic computation corresponds to a user-defined task, each data-dependency to a user-defined data structure. We introduce a language named Athapascan-1 that allows built a graph of dependencies from a strong typing of shared memory accesses. We detail compilation and implementation of the language. Besides, the performance of a code (parallel time, communication and arithmetic works, memory space) are defined from a cost model without the need of a machine model. We exhibit efficient scheduling with respect to these costs on theoretical machine models.
Multithreading, macro-data flow languages, on-line scheduling, parallel complexity
Jean-Louis Roch, Mathias Doreille, Gerson G.H. Cavalheiro, François Galilée, Lmc - Imag, "Athapascan-1: On-Line Building Data Flow Graph in a Parallel Language", Proceedings of the 22nd International Conference on Parallel Architectures and Compilation Techniques, vol. 00, no. , pp. 88, 1998, doi:10.1109/PACT.1998.727176