a hierarchy, with shared-memory architecture with a few processors at the base, and shared-nothing
architecture at the top, with possibly shared-disk architecture in the middle. The hierarchical archi-
tecture is illustrated in fi gure 2.6.
Interconnection Network
P1
P2
Pn
Memory
Disk1
Diskn
P1
P2
Pn
Memory
Disk1
Diskn
P1
P2
Pn
Memory
Disk1
Diskn
Fig. 2.6 Hierarchical Architecture
The advantages of hierarchical architecture are evident. It provides all the advantages of
shared-memory, shared-disk and shared-nothing architectures such as fl exibility and better per-
formance of shared-memory architecture, higher data availability of ...
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