Partitioned cache shadowing for deep sub-micron (DSM) regime

An important issue in modern cache designs is bridging the gap between wire and device delays. This warrants the use of more regular and modular structures to mask wire latencies. This paper advances the basic concepts of shadow caching to offer protection against both data corruption and micro-network disruption in partitioned architectures. Network disruption is tolerated by sending shadow packet along a different route than the original packet, whereas the data corruption problem is addressed by reserving a small portion of the overall cache capacity for in-cache shadow space. Our results show that an average of 96% in data error coverage for Spec2K benchmarks can be achieved and more than 99% of the transient faults on the underlying switched micro-network can also be protected while incurring less than 3% performance degradation in most of the above benchmarks

Partitioned cache shadowing for deep sub-micron (DSM) regime

An important issue in modern cache designs is bridging the gap between wire and device delays. This warrants the use of more regular and modular structures to mask wire latencies. This paper advances the basic concepts of shadow caching to offer protection against both data corruption and micro-network disruption in partitioned architectures. Network disruption is tolerated by sending shadow packet along a different route than the original packet, whereas the data corruption problem is addressed by reserving a small portion of the overall cache capacity for in-cache shadow space. Our results show that an average of 96% in data error coverage for Spec2K benchmarks can be achieved and more than 99% of the transient faults on the underlying switched micro-network can also be protected while incurring less than 3% performance degradation in most of the above benchmarks.This is a manuscript of a proceeding published as Xu, Heng, and Arun Somani. "Partitioned cache shadowing for deep sub-micron (DSM) regime." In 11th Pacific Rim International Symposium on Dependable Computing (PRDC'05) (2005): 8. DOI: 10.1109/PRDC.2005.48. Posted with permission.</p

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This grant covered an umbrella program of research in high-­‐energy particle physics at Southern Methodist University during the period 2004-­‐2013. The experimental program evolved during that time. At its early stages it included research on the CLEO experiment at CESR (Coan, Stroynowski, Ye), D0 experiment at Tevatron (Kehoe), preparation for the BTEV experiment at Fermilab (Coan) and construction and commissioning of the Liquid Argon Calorimeter for the ATLAS experiment at LHC (Stroynowski, Ye). In the last three years the program concentrated on the ATLAS experiment at LHC (Kehoe, Sekula, Stroynowski, Ye), D0 experiment at Tevatron (Kehoe) and NOvA experiment at Fermilab (Coan). Professor Sekula had a short-­‐term independent grant for which he is submitting a separate report. The theoretical physics program included work on non-­‐perturbative methods in the light cone representation (McCartor (deceased)), lattice calculations (Hornbostel), and determination of parton distribution functions (Olness). A summary of the accomplishments emphasizing results from the past three years is provided separately for each of the tasks

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Safety and Reliability - Safe Societies in a Changing World

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