This paper studies the locality analysis problem for shared-memory multiprocessors, a class of parallel machines that has experienced steady and rapid growth in the past few years. The focus of this work is on estimation of the memory performance of a loop nest for a given set of computation and data distributions. We assume a distributed shared-memory multiprocessor model. We discuss how to es...

The performance of parallel programs has suffered from memory access latencies induced by cache misses. In this paper, to investigate the causes of these cache misses, data parallel applications were executed on shared memory multiprocessors. The experiment showed that cache conflict misses occupied most of the cache misses. This was due to the cross interference among the grains composed of th...

The effective shear and bulk viscosity, as well as dynamic viscosity, describe the rheological properties of the ceramic body during the liquid phase sintering process. The rheological parameters depend on the physical and thermo-mechanical characteristics of the material such as relative density, temperature, grain size, diffusion coefficient, and activation energy. Thermal behavior of the cer...

EKER, ABDULAZIZ. Characterization of Context Switch Effects on L2 Cache. (Under the direction of Dr. Yan Solihin.) Multitasking is common in most systems. In order to use the processor resources efficiently, a multitasking system schedules processes to run for certain intervals by switching (saving and restoring) their contexts. However, since processes bring their own data to the cache when th...

In this paper we construct an analytic model of cache misses during matrix multiplication. The analysis in this paper applies to square matrices of size 2m where the array layout function is given in terms of a function that interleaves the bits in the binary expansions of the row and column indices. We first analyze the number of cache misses for direct-mapped caches and then indicate how to e...

Cache conflict misses can cause severe degradation in application performance. Previous research has shown that for many scientific applications majority of cache misses are due to conflicts in cache. Although, conflicts in cache are a major concern for application performance it is often difficult to eliminate them completely. Eliminating conflict misses requires detailed knowledge of the cach...

Nearly all modern computing systems employ caches to hide the memory latency. Modern processors often employ multiple levels of cache, with one or more levels on the same die as the processor core. As performance demands increase, it becomes increasingly important for an on-die cache structure to perform well. Inefficient use of the available cache space can become increasingly costly in terms ...

a 4.5 years old boy with left postero superior lateral neck mass admitted to shahid rahnemoon hospital in yazd. the mass had been noticed 2 years ago and there was no improvement after three times antibiotic therapy. on physical examination there were two masses on the neck. one of them was approximately 3×4 cm and the other was 2×2 cm. on of the masses was located in the left posterior auricul...