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PARSEC is a reference application suite used in industry and academia to assess new chip multiprocessor (CMP) designs. No investigation to date has profiled PARSEC on real hardware to better understand scaling properties and bottlenecks. This understanding is crucial in guiding future CMP designs for these kinds of emerging workloads. We use hardware performance counters, taking a systems-level approach...
A conceptually appealing approach to supporting a broad range of workloads is a system comprising many small cores that can be fused, on demand, into larger cores. We demonstrate that using in-order cores for this purpose, even under idealized assumptions about fusion-related overheads, would introduce fundamental obstacles to achieving good performance - obstacles that are not present when out-of-order...
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