By Ojeda J.L., Cristobal J.A.
Read or Download A bootstrap approach to model checking for linear models under length-biased data PDF
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Extra info for A bootstrap approach to model checking for linear models under length-biased data
Evaluation is done on a set of parallel NAS applications. Keywords: Cell BE Architecture, Software Cache, Pre-fetching, Modulo Scheduling. 1 Introduction Heterogeneity has become one particular trend in recently proposed computer systems. For instance, the IBM Cell BE processor [1-5] is a multi-core design that mixes two architectures: a traditional superscalar core based on the PowerPC architecture surrounded by eight cores based on the Synergistic Processor Element (SPE). In the IBM Cell architecture, the SPEs are provided with local memories and data transfers from/to main memory are explicitly performed under software control.
In the case of CG-B, the improvements range from 3% up to 10 % at most. Loops 3 and 7 suffer from slight degradation (not even a 1% and 5% respectively). The reason for that is related to the differences on how deeply the loops are affected by communications. The CG-B loop 9 is dominated with irregular memory references and is the most consuming loop in the CG-B. Improvement achieved in this loop has 44 N. Vujić et al. good influence on overall execution time of the CG-B (Figure 7). The case of the ISB is different.
It contains 3 elements; the global base address of the original reference, the local base address in the cache storage, and a pointer to the cache line descriptor. We implement an efficient, fully associative cache structure using the Cache Directory structure. It contains a sufficiently large number of double–linked lists (128 lookup(g5) Cache line descriptors g5 lookup(g3) Cache State 7 … L8 15 L15 16 L16 23 L23 Global addr: g5 24 L24 Local data addr: l2 31 Turn Ticket Translation Record Global addr: g3 Local data addr: l7 … Last L7 … First g3 8 … l4 Free links Cache Directory Directory links … … l2 DMA Tags … Ref counter Placement Index L0 … l7 0 … State (modif…) Translation Record Unused List Cache Storage Local data addr: l2 … Cache Directory Global addr: Cache Storage L31 Cache line descriptor Cache param.