Optical sensing as a means of monitoring health of multicomputer networks
<p>The use of optical sensors to perform health monitoring in fault-tolerant multicomputers can allow the multicomputer to detect imminent failure in a particular section of the interconnection network due to damaging strain. This detection method allows the rerouting of critical data before d...
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| Format: | Others |
| Language: | en |
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Virginia Tech
2014
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| Online Access: | http://hdl.handle.net/10919/46024 http://scholar.lib.vt.edu/theses/available/etd-11242009-020318/ |
| Summary: | <p>The use of optical sensors to perform health monitoring in fault-tolerant multicomputers
can allow the multicomputer to detect imminent failure in a particular section of the
interconnection network due to damaging strain. This detection method allows the
rerouting of critical data before data link failure occurs.</p>
<p>
This thesis investigates the implementation of the extrinsic Fabry-Perot interferometer into
an optical hybrid communications/sensing network. A testbed of personal computers,
acting as nodes of a multicomputer, are used to monitor the integrity of the network to a
high degree of accuracy. When a node determines that an adjacent data link is no longer
reliable due to physical damage, communications are rerouted and the node is shut down.</p>
<p>
Results of experiments with the testbed have shown that redundant nodes can be used to
share computational loads, increasing the performance of the multicomputer, until
network failure forces redundant nodes to assume full responsibility for computational
tasks. Multicomputer performance suffers as a result of network damage, but full
functionality is retained with no occurrence of errors or unknown conditions due to data
link failure.</p> === Master of Science |
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