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Title:
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Implementing and Analysing an Effective Explicit Coscheduling Algorithm on a NOW
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Author:
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Solsona Tehàs, Francesc; Giné, Francesc; Molina, Fermín; Hernandez, Porfidio; Luque, Emilio
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Notes:
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Networks of workstations (NOWs) have become important
and cost-effective parallel platforms for scientific computations. In practice,
a NOW system is heterogeneous and non-dedicated. These two
unique factors make scheduling policies on multiprocessor/multicomputer
systems unsuitable for NOWs, but the coscheduling principle is still an
important basis for parallel process scheduling in these environments.
The main idea of this technique is to schedule the set of tasks composing
a parallel application at the same time, to increase their communication
performance. In this article we present an explicit coscheduling algorithm
implemented in a Linux NOW, of PVM distributed tasks, based on Real
Time priority assignment. The main goal of the algorithm is to execute
efficiently distributed applications without excessively damaging the response
time of local tasks. Extensive performance analysis as well as
studies of the parameters and overheads involved in the implementation
demonstrated the applicability of the proposed algorithm. |
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Rights:
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(c) Springer Verlag, 2001
info:eu-repo/semantics/restrictedAccess |
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Document type:
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article
publishedVersion |
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Published by:
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Springer Verlag
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