Data di Pubblicazione:
2008
Citazione:
Joint optimization of hardware and network costs for distributed computer systems / D. Ardagna, C. Francalanci, M. Trubian. - In: IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART A-SYSTEMS AND HUMANS. - ISSN 1083-4427. - 38:2(2008), pp. 470-484.
Abstract:
Multiple combinations of hardware and network
components can be selected to design an information technology
(IT) infrastructure that satisfies requirements. The professional
criterion to deal with these degrees of freedom is cost minimiza8
tion. However, a scientific approach has been rarely applied to cost
minimization, particularly for the joint optimization of hardware
and network systems. This paper provides an overall methodology
for combining hardware and network designs in a single cost
minimization problem for multisite computer systems. Costs are
minimized by applying a heuristic optimization approach to a
sound decomposition of the problem. We consider most of the
design alternatives that are enabled by current hardware and
network technologies, including server sizing, localization of multitier applications, and reuse of legacy systems. The methodology
is empirically verified with a database of costs that has also been
built as part of this paper. Verifications consider several test cases
with different computing and communication requirements. Cost
reductions are evaluated by comparing the cost of methodological
results with those of architectural solutions that are obtained by
applying professional design guidelines. The quality of heuristic optimization results is evaluated through comparison with
lower bounds.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Client server ; costs ; distributed computing ;
networks
Elenco autori:
D. Ardagna, C. Francalanci, M. Trubian
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