NDLI: FTDIS: A Fault Tolerant Dynamic Instruction Scheduling

Content Provider	IEEE Xplore Digital Library
Author	Ghamari, R. Rajabzadeh, A.
Copyright Year	2010
Abstract	In this work, we target the robustness for controller scheduler of type Tomasulo for SEU faults model. The proposed fault-tolerant dynamic scheduling unit is named FTDIS, in which critical control data of scheduler is protected from driving to an unwanted stage using Triple Modular Redundancy and majority voting approaches. Moreover, the feedbacks in voters produce recovery capability for detected faults in the FTDIS, enabling both fault mask and recovery for system. As the results of analytical evaluations demonstrate, the implemented FTDIS unit has over 99% fault detection coverage in the condition of existing less than 4 faults in critical bits. Furthermore, based on experiments, the FTDIS has a 200% hardware overhead comparing to the primitive dynamic scheduling control unit and about 50% overhead in comparision to a full CPU core. The proposed unit also has no performance penalty during simulation. In addition, the experiments show that FTDIS consumes 98% more power than the primitive unit.
Starting Page	32
Ending Page	37
File Size	237747
Page Count	6
File Format	PDF
ISBN	9781424475308
e-ISBN	9781424475315
DOI	10.1109/DEPEND.2010.13
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-18
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault tolerance Program processors Tomasulo scheduler Fault tolerant systems Superscalar Dynamic Instruction Scheduling Fault Tolerant computing Dynamic scheduling Hardware Registers Circuit faults
Content Type	Text
Resource Type	Article

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