Power consumption and testability are two of major corisiderations in modern VLSI design. A full-scan method had been used widely in the past, to improve the testability of sequential circuits. Owing to the lower overheads incurred, the partial-scan design has gradually become popular. The authors propose a partialscan selection strategy which is based on the structural analysis approach and co...

Dynamically changing CPU voltage and frequency have been shown to greatly save the processor energy. These adjustments can be done at specific power management points (PMPs), which are not without overheads. In this work we study the effect of different overheads on both time and energy; these can be seen as the overhead of computing the new speed, and then the overhead of dynamically adjusting...

Sparse matrix problems are diicult to parallelize eeciently on distributed memory machines since data is often accessed indirectly. Inspector/executor strategies, which are typically used to parallelize loops with indirect references, incur substantial run-time preprocessing overheads when references with multiple levels of indirection are encountered | a frequent occurrence in sparse matrix al...

The design of a portable, yet efficient, thread library, called Balder Threads, is discussed in this paper. The library is used within Balder, a run-time library for OpenMP 2.0. The thread library is evaluated using the EPCC micro-benchmarks and measuring the overheads for the entire Balder OpenMP run-time library. The overheads, using Balder Threads, are found to be an order of an magnitude sm...

This article is concerned with the static analysis of structural cables used in railway overheads. Structural analysis computer program named ANSYS is used for analysis. Two effects are considered in the analysis. First one is the bending behavior effect of cables. BEAM188 in addition to LINK10 and LINK180 is used to see the difference in case of additional bending effect. Besides, LINK10 and L...

Workstation-based parallel systems are attractive due to their low cost and competitive uniprocessor performance. However, supporting a cache-coherent global address space on these systems involves significant overheads. We examine two approaches to coping with these overheads. First, DSM-specific hardware can be added to the off-the-shelf component base to reduce overheads. Second, application...

Overheads incurred by routing protocols diminish the capacity available for relaying useful data in a mobile wireless ad hoc network. Discovering lower bounds on the amount of protocol overhead incurred for routing data packets is important for the development of efficient routing protocols, and for characterizing the actual (effective) capacity available for network users. This paper presents ...

The OS scheduler’s memory and runtime overheads form crucial design constraints for embedded systems implemented on low-cost hardware platforms. Table-driven scheduling can provide a high level of schedulability; however, it also consumes significant amounts of memory. By contrast, effective non-preemptive scheduling policies, such as the non-workconserving Critical-Window EDF (CW-EDF), have lo...

Long-running applications are often subject to failures. Once failures occur, it will lead to unacceptable system overheads. The checkpoint technology is used to reduce the losses in the event of a failure. For the two-level checkpoint recovery scheme used in the long-running tasks, it is unavoidable for the system to periodically transfer huge memory context to a remote stable storage. Therefo...

Runtime verification techniques are increasingly being applied in industry as a lightweight formal approach to achieve added assurance of correctness at runtime. A key issue determining the adoption of these techniques is the overheads introduced by the runtime checks, affecting the performances of the monitored systems. Despite advancements in the development of optimisation techniques lowerin...