نتایج جستجو برای: spark assisted performance

تعداد نتایج: 1176099  

2015
Chen Yang Jie Tang Heng Gao Gangshan Wu

Pre-stack Kirchhoff time migration (PKTM) is one of the most widely used migration algorithms in seismic imaging area. However, PKTM takes considerable time due to its high computational cost, which greatly affects the working efficiency of oil industry. Due to its high fault tolerance and scalability, Hadoop has become the most popular platform for big data processing. To overcome the shortcom...

Journal: :iranian journal of science and technology (sciences) 2005
a. ghasemizad

in isobaric models for inertial confinement fusion it is assumed that the target configurationat stagnation time (maximum compression) consists of two regions, hot spark and cold fuel, respectively.here the conditions of spark formation and ignition in hydrogen equimolar isotopes in central sparkignition are investigated and permissible values of hs and ts are evaluated numerically. by introduc...

2017
Gylfi Þór Guðmundsson Laurent Amsaleg Björn Þór Jónsson Michael J. Franklin

Computing power has now become abundant with multi-core machines, grids and clouds, but it remains a challenge to harness the available power and move towards gracefully handling web-scale datasets. Several researchers have used automatically distributed computing frameworks, notably Hadoop and Spark, for processing multimedia material, but mostly using small collections on small clusters. In t...

Journal: :Concurrency and Computation: Practice and Experience 2016
Mingxing Duan Kenli Li Zhuo Tang Guoqing Xiao Keqin Li

As a parallel computation framework, Spark can cache repeatedly resilient distribution datasets (RDDs) partitions in different nodes to speed up the process of computation. However, Spark does not have a good mechanism to select reasonable RDDs to cache their partitions in limited memory. In this paper, we propose a novel selection algorithm, by which Spark can automatically select the RDDs to ...

2015
Charles Y. Zheng Jingshu Wang

We propose an algorithm for the All-Pairs-Shortest-Paths (APSP) problem suitable for implementation in Spark, and analyze its performance. We begin by considering distributed Floyd-Warshall, as proposed by Kumar and Singh (1991). Distributed Floyd-Warshall has asymptotically optimal scaling and can be implemented in Spark by using BlockMatrix to represent the APSP distance matrix. However, we o...

Journal: : 2023

In this research, the fabrication of transparent Alumina was done by spark plasma sintering (SPS). Two types alpha and gamma powders with particle size 200 50 nm were used, respectively. The assisted materials used in research magnesium nitrate lanthanum nitrate, each which 100 ppm using a chemical precipitation process. Calcination performed at 800°C resulting subjected to SPS 1500 °C rate °C/...

Journal: :Cybernetics and Information Technologies 2020

Journal: :Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 2000

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