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Books > Computing & IT > Computer hardware & operating systems > Computer architecture & logic design > Parallel processing
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Hierarchical Scheduling in Parallel and Cluster Systems (Hardcover, 2003 ed.)
Loot Price: R4,157
Discovery Miles 41 570
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Hierarchical Scheduling in Parallel and Cluster Systems (Hardcover, 2003 ed.)
Series: Series in Computer Science
Expected to ship within 18 - 22 working days
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Multiple processor systems are an important class of parallel
systems. Over the years, several architectures have been proposed
to build such systems to satisfy the requirements of high
performance computing. These architectures span a wide variety of
system types. At the low end of the spectrum, we can build a small,
shared-memory parallel system with tens of processors. These
systems typically use a bus to interconnect the processors and
memory. Such systems, for example, are becoming commonplace in
high-performance graph ics workstations. These systems are called
uniform memory access (UMA) multiprocessors because they provide
uniform access of memory to all pro cessors. These systems provide
a single address space, which is preferred by programmers. This
architecture, however, cannot be extended even to medium systems
with hundreds of processors due to bus bandwidth limitations. To
scale systems to medium range i. e., to hundreds of processors,
non-bus interconnection networks have been proposed. These systems,
for example, use a multistage dynamic interconnection network. Such
systems also provide global, shared memory like the UMA systems.
However, they introduce local and remote memories, which lead to
non-uniform memory access (NUMA) architecture. Distributed-memory
architecture is used for systems with thousands of pro cessors.
These systems differ from the shared-memory architectures in that
there is no globally accessible shared memory. Instead, they use
message pass ing to facilitate communication among the processors.
As a result, they do not provide single address space."
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