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2006
IEEE

In-Register Duplication: Exploiting Narrow-Width Value for Improving Register File Reliability

14 years 5 months ago
In-Register Duplication: Exploiting Narrow-Width Value for Improving Register File Reliability
Protecting the register value and its data buses is crucial to reliable computing in high-performance microprocessors due to the increasing susceptibility of CMOS circuitry to soft errors induced by high-energy particle strikes. Since the register file is in the critical path of the processor pipeline, any reliable design that increases either the pressure on the register file or the register file access latency is not desirable. In this paper, we propose to exploit narrow-width register values, which present the majority of the generated values, for duplicating a copy of the value within the same data item, called in-register duplication (IRD), eliminating the requirement of additional copy registers. The datapath pipeline is augmented to efficiently incorporate parity encoding and parity checking such that error recovery is seamlessly supported in IRD and the parity checking is overlapped with the execution stage to avoid increasing the critical path. Our experimental evaluation...
Jie Hu, Shuai Wang, Sotirios G. Ziavras
Added 11 Jun 2010
Updated 11 Jun 2010
Type Conference
Year 2006
Where DSN
Authors Jie Hu, Shuai Wang, Sotirios G. Ziavras
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