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    Broadcast Disks: Data Management for Asymmetric Communication Environments

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    Date
    1998-10-15
    Author
    Acharya, Swarup
    Alon, Rafael
    Franklin, Michael J.
    Zdonik, Stanley
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    Abstract
    This paper proposes the use of repetitive broadcast as a way of augmenting the memory hierarchy of clients in an asymmetric communication environment. We describe a new technique called "Broadcast Disks" for structuring the broadcast in a way that provides improved performance for non-uniformly accessed data. The Broadcast Disk superimposes multiple disks spinning at different speeds on a single broadcast channel in effect creating an arbitrarily fine-grained memory hierarchy. In addition to proposing and defining the mechanism, a main result of this work is that exploiting the potential of the broadcast structure requires a reevaluation of basic cache management policies. We examine several "pure" cache management policies and develop and measure implementable approximations to these policies. These results and others are presented in a set of simulation studies that substantiates the basic idea and develops some of the intuitions required to design a particular broadcast program. (Also cross-referenced as UMIACS-TR-94-120)
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    http://hdl.handle.net/1903/671
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    • Technical Reports of the Computer Science Department

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