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TERPS: THE EMBEDDED RELIABLE PROCESSING SYSTEM



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ABSTRACT Title of Thesis TERPS THE EMBEDDED RELIABLE PROCESSING SYSTEM Amol Vishwas Gole Master of Science 2003 Thesis directed by Professor Bruce L Jacob Department of Electrical and Computer Engineering Electromagnetic Interference EMI can have an adverse effect on commercial electronics As feature sizes of integrated circuits become smaller their susceptibility to EMI increases In light of this integrated circuits will face substantial problems in the future either from electromagnetic disturbances or intentionally generated EMI from a malicious source The Embedded Reliable Processing System TERPS is a fault tolerant system architecture which can significantly reduce the threat of EMI in computer systems TERPS employs a checkpoint and rollback recovery mechanism tied with a multi phase commit protocol and 3D IC technology This enables it to recover from substantial EMI without having to shutdown or reboot In the face of such EMI only a loss in performance dictated by the strength and duration of the interference and the frequency of checkpointing will be seen Various conditions in which chips can fail under the influence of EMI are described The checkpoint and rollback recovery mechanism and the resulting TERPS architecture is stipulated A thorough evaluation of the design correctness is provided The technique is implemented in Verilog HDL using a 16 bit 5 stage pipelined processor to show proof of concept The performance overhead is calculated for different checkpointing intervals and is shown to be very reasonable 5 6 for checkpointing every 128 CPU cycles TERPS THE EMBEDDED RELIABLE PROCESSING SYSTEM by Amol Vishwas Gole Thesis submitted to the Faculty of the Graduate School of the University of Maryland College Park in partial fulfillment of the requirements for the degree of Master of Science 2003 Advisory Committee Professor Bruce L Jacob Chair Advisor Professor Virgil D Gligor Professor Manoj Franklin Copyright by Amol Vishwas Gole 2003 DEDICATION To my



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