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Just-in-time compilation for dynamic languages uses type speculation to generate optimized code for frequently executed code sections. However, even the high-performance code requires checks to ensure that assumptions made during code generation are not violated. If the assumptions are violated then the program reverts to executing unoptimized code. This process is called deoptimization, and the checks...
PARSEC is a popular benchmark suite designed to facilitate the study of CMPs. It is composed of 13 parallel applications, each with an input set intended for native execution, as well as three reduced-size simulation input sets. Each benchmark also demarcates a Region of Interest (ROI) that indicates the parallel code in the application. The PARSEC developers state that users should model only the...
Computer architects rely heavily on software-based microarchitecture simulators, which typically take hours or days to produce results. We have developed LiveSim, a novel microarchitectural simulation methodology that provides simulation results within seconds, making it suitable for interactive use. LiveSim works by creating in-memory checkpoints of application state, and then executing randomly...
Power densities in modern processors induce thermal issues that limit performance. Power and thermal models add complexity to architectural simulators, limiting the depth of analysis. Prohibitive execution time overheads may be circumvented using sampling techniques. While these approaches work well when characterizing processor performance, they introduce new challenges when applied to the thermal...
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