High performance hierarchical torus network under matrix transpose traffic patterns
Interconnection networks play a crucial role in the performance of massively parallel computers. Hierarchical interconnection networks provide high performance at low cost by exploring the locality that exists in the communication patterns of massively parallel computers. A Hierarchical Torus Netwo...
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| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2004
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/7976/1/ISPAN_2004.pdf http://irep.iium.edu.my/7976/ http://dx.doi.org/10.1109/ISPAN.2004.1300467 |
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| Summary: | Interconnection networks play a crucial role in the performance of massively parallel computers. Hierarchical interconnection networks provide high performance at low
cost by exploring the locality that exists in the communication patterns of massively parallel computers. A Hierarchical Torus Network (HTN) is a 2D-torus network of multiple basic modules, in which the basic modules are 3Dtorus networks that are hierarchically interconnected for
higher level networks. The static network performance of
the HTN has already been studied and has been shown to be
good. Dynamic communication performance has been evaluated under uniform traffic patterns but not under a nonuniform traffic, such as matrix transpose traffic patterns.
In this paper, we present a deadlock-free routing algorithm
for the HTN using virtual channels and evaluate the network’s dynamic communication performance under matrix
transpose traffic, using the proposed routing algorithm. We
evaluate the dynamic communication performance of HTN,
H3D-mesh, TESH, and mesh networks by computer simulation. We find that the dynamic communication performance
of HTN is better than that of the H3D-mesh, TESH, and
mesh networks. |
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