Abstract
The cube-connected cycles (CCC) architecture is an attractive parallel computation network, because it is suitable for VLSI implementation while preserving all the desired features of hypercubes. However, the CCC tends to suffer from considerable performance degradation when a fault arises. In this work, a fault-tolerant CCC which exhibits significantly enhanced reliability is proposed. Reconfiguration in response to an operational fault in this fault-tolerant CCC is simple and can be performed in a distributed manner. When compared with the CCC, the proposed design in the absence of faults gets performance improvement as a result of faster broadcasting and PE-to-PE communication. The layout of this structure is discussed, and its area overhead is found to be moderate if the PE size is much larger than the link/switch size. Therefore, this design approach is particularly useful for situations where the PE is relatively complex. >
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