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- W2394850002 abstract "Future computing systems will contain more and more cores on a single die. Permanent faults occur not only during manufacturing but may also arise at runtime. To detect these faults, a group of cores is monitored by a single unit, receiving heartbeats from all cores. In this paper, we present a simple method to localize permanent faults in a 2D mesh-based NoC by using heartbeats and by measuring the time from source (core) to destination (monitoring unit). We introduce a heartbeat network along with the normal application message network to guarantee a deterministic heartbeat timing and no interferences with application messages. If the time for a heartbeat exceeds a given interval, it can be concluded that the heartbeat is missing or delayed, e.g. because of a faulty core, link or router. As this is not sufficient to localize a fault, we introduce the concept of Timed Heartbeats, which uses different routing directions in contrary to the intended routing to introduce a fixed, additional delay for rerouted heartbeats. The delay helps to localize the fault without any additional bandwidth consumption." @default.
- W2394850002 created "2016-06-24" @default.
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- W2394850002 date "2012-01-01" @default.
- W2394850002 modified "2023-09-23" @default.
- W2394850002 title "Fault Localization in NoCs by Timed Heartbeats." @default.
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