| Autor: |
Simon Dobson, D. M. Goodeve, J. M. Nash, J. R. Davy, P. M. Dew, M. Kara, C.P. Wadsworth |
| Rok vydání: |
1998 |
| Předmět: |
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| Zdroj: |
Journal of Parallel and Distributed Computing. 49:156-167 |
| ISSN: |
0743-7315 |
| DOI: |
10.1006/jpdc.1998.1427 |
| Popis: |
This paper demonstrates the utility of typed shared data abstractions as an effective high-level means of structuring and coordinating parallel programs. Access to data shared by concurrent processes is expressed through operations of shared abstract data types (SADTs). SADTs abstract low-level concerns of communication and synchronization. The exposition addresses two major challenges: mismatches between representations and actual patterns of usage, and over-specified coherence. A prototype library of SADTs provides a set of implementations for each SADT, supporting stereotypical usage patterns and allowing exploitation of weakened coherence protocols. The efficacy of this approach is demonstrated on both a network of workstations and a dedicated massively parallel computer. A fine-grained irregular task-parallel computation obtained a speedup of 156 on a 256-processor Cray T3D, showing that the high levels of abstraction afforded by SADTs are compatible with efficient and scalable implementation. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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