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Many applications have irregular behavior — e.g., input-dependent solvers, irregular memory accesses, or unbiased branches — that cannot be captured using today's automated performance modeling techniques. We describe new hierarchical critical path analyses for the Palm model generation tool. To obtain a good tradeoff between model accuracy, generality, and generation cost, we combine static and dynamic...
Multicore processors have become an integral part of modern large-scale and high-performance parallel and distributed computing systems. Unfortunately, applications co-located on multicore processors can suffer from decreased performance and increased dynamic energy use as a result of interference in shared resources, such as memory. As this interference is difficult to characterize, assumptions about...
Efficiently managing large-scale computing systems presents many challenging problems for system administrators. Such environments often consist of hundreds of thousands of processors, execute workloads with millions of tasks, and consume enormous amounts of energy. These sizes are going to further increase as the first exascale machines come online within the next decade. To effectively utilize such...
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