A task remapping technique for reliable multi-core embedded systems

With the continuous scaling of semiconductor technology, the life-time of circuit is decreasing so that processor failure becomes an important issue in MPSoC design. A software solution to tolerate run-time processor failure is to migrate tasks from the failed processors to the live processors when failure occurs. Previous works on run-time task migration usually aim to minimize the migration overhead with or without a given latency constraint. For streaming applications, however, it is more important to minimize the throughput degradation than the migration overhead or the latency. Hence, we propose a task remapping technique to minimize the throughput degradation assuming that the migration overhead can be amortized safely. The target multi-core system assumed in this paper consists of processor pools and each pool consists of homogeneous processors. The proposed technique is based on an intensive compile-time analysis for all possible failure scenarios. It involves the following st...

• Type: Journal
• Year: 2010
• Where: CODES
• Authors: Chanhee Lee, Hokeun Kim, Hae-woo Park, Sungchan Kim, Hyunok Oh, Soonhoi Ha
• Keywords: CODES 2010, Processor Failure, Processors, Software Engineering, Throughput Degradation