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Institutional Repository [SANDBOX]
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/3BE2F74A-F86C-4A59-B4A9-C82262F2353E | ||
| Year | 1997 | ||
| Type of Item | Conference Publication | ||
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| Bibliographic Citation | M. Garofalakis and Y. Ioannidis, "Parallel query scheduling and optimization with time- and space-shared resources", in 23rd VLDB Conference, August 1997, pp. 296-305. | ||
| Appears in Collections |
Scheduling query execution plans is a particularly complexproblem in hierarchical parallel systems, where eachsite consists of a collection of local time-shared (e.g.,CPU(s) or disk(s)) and space-shared (e.g., memory) resourcesand communicates with remote sites by messagepassing.We develop a general approach to the problem,capturing the full complexity of scheduling distributedmulti-dimensional resource units for all kinds of parallelismwithin and across queries and operators. We presentheuristic algorithms for various forms of the problem, someof which are provably near-optimal. Preliminary experimentalresults confirm the effectiveness of our approach
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