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Ultra Low-Cost Defect Protection for Microprocessor Pipelines Smitha Shyam Kypros Constantinides Sujay Phadke
 

Summary: Ultra Low-Cost Defect Protection for Microprocessor Pipelines
Smitha Shyam Kypros Constantinides Sujay Phadke
Valeria Bertacco Todd Austin
Advanced Computer Architecture Lab
University of Michigan, Ann Arbor, MI 48109
{smithash, kypros, sphadke, valeria, austin}@umich.edu
Abstract
The sustained push toward smaller and smaller technology sizes
has reached a point where device reliability has moved to the
forefront of concerns for next-generation designs. Silicon failure
mechanisms, such as transistor wearout and manufacturing defects,
are a growing challenge that threatens the yield and product life-
time of future systems. In this paper we introduce the BulletProof
pipeline, the first ultra low-cost mechanism to protect a micropro-
cessor pipeline and on-chip memory system from silicon defects.
To achieve this goal we combine area-frugal on-line testing tech-
niques and system-level checkpointing to provide the same guar-
antees of reliability found in traditional solutions, but at much
lower cost. Our approach utilizes a microarchitectural checkpoint-
ing mechanism which creates coarse-grained epochs of execution,

  

Source: Austin, Todd M. - Department of Electrical Engineering and Computer Science, University of Michigan
Bertacco, Valeria - Department of Electrical Engineering and Computer Science, University of Michigan

 

Collections: Computer Technologies and Information Sciences; Engineering