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Adaptable Fault Tolerance Configurations for Multiprocessor Systems
| International Journal of Applied Information Systems |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 3 - Number 2 |
| Year of Publication: 2012 |
| Authors: Samia A. Ali |
http:/ijais12-450448
|
Samia A. Ali . Adaptable Fault Tolerance Configurations for Multiprocessor Systems. International Journal of Applied Information Systems. 3, 2 ( July 2012), 1-8. DOI=http:/ijais12-450448
Abstract
The escalating increase in the complexity of multiprocessor systems increases the probability of faults occurring in these systems As a consequence there is a great need for achieving fault-tolerance of processing in multiprocessor systems. Fault-tolerance generally requires some forms of hardware and/or time redundancy. Two fault tolerant configurations are proposed for both single and double transient and permanent faults in any processor of multiprocessor systems. The tolerance for faults takes place in three consecutive steps; fault detection, fault diagnosing and system recovery. The overhead cost for the first (second) configuration is only 100% hardware (time) for fault detection, an extra 100% time for fault diagnoses and system recovery only for those processes running on the faulty processors. The advantages of the proposed configurations are the ease of applicability and the low associated overhead cost over the system without any fault tolerance. An enhancement is developed for both configurations to check upon the system state adequately to detect and recover from faults as soon as they infect the system. Simulations are performed to illustrate the usefulness of the proposed configurations.
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