Data Distribution

Data distribution and storage design of ship information System Wang Kanmei Hu Xiaohui Zhou Wenya Gao with the increasing requirements of data interaction between various systems of ships, the explosive increase of historical data, the efficient distribution of data and the increasing importance of mass data storage. On the basis of analyzing the specification of DDS (data distribution service), the Ship Information data distribution system is built, and a joint storage scheme based on RDB and NoSQL (not only SQL) is proposed. To realize the data of ship information system ...

An optimal algorithm for I/O performance of cloud storage system based on dynamic mixed partitioning mechanism Ma Yi June, Ran, Feng Keng, Shen Ye in order to solve the problem of the storage I/O performance optimization in the cloud storage system, the paper studies from the angle of the data distribution, and based on this, gives the I/O The piecewise decision algorithm with optimal performance and the calculation method of the optimal fragment number, a data distribution algorithm (DADH) based on dynamic mixed fragmentation mechanism is proposed. Dhah can take full account of each storage node and the actual performance of the client, dynamic file fragmentation ...

2decomp&fft is a http://www.aliyun.com/zixun/aggregation/29818.html ">fortran framework for building software for large-scale concurrent applications." It is designed for use in the application of three-dimensional structured grids and spatial implicit numerical algorithms. It implements a general distributed two-dimensional pencil decomposition for data distribution on a storage platform, which provides a highly scalable interface to perform three-dimensional distributed FFT. 2DECOMP ...

2decomp&fft is the http://www.aliyun.com/zixun/aggregation/29818.html ">fortran framework to build large-scale parallel applications." It is designed for use in three-dimensional structured grids and spatial implicit numerical algorithm applications. On this basis, it realizes the 2D optical dimension decomposition of the data distribution on a general distributed storage platform. It provides a highly scalable and efficient interface for three-dimensional distribution of FFT. 2DECOM ...

UPC language http://www.aliyun.com/zixun/aggregation/18736.html > Allows users to control how data is laid out, and the layout of the data affects the performance of the program. This paper, through a series of program examples, makes the UPC language learners understand clearly how to layout the data reasonably from the angle of performance optimization. The data distribution private data in the UPC is distributed in the UPC, and private data can only be accessed by the thread on which it resides. When ...

Research on data distribution strategy of mass storage System Huang Qiulan Wuch Cheng Yaodong Chen for the problem of scalability and flexibility of data distribution in mass storage system, an efficient data distribution algorithm is proposed. This algorithm uses the idea of consistent hashing, uses the mapping mode of "two points" to map the physical storage node, abandons the method of each node of chord algorithm to maintain the routing table, and realizes the direct route in [O (1)] time. The algorithm also adopts the idea of "differential approximation" to realize the uniform distribution of the data. Experimental results show that the TTD algorithm has nothing to do with data distribution ...

July 9, Tuesday. Ask you a question: assuming that there are three participants in the market, a quick B 2 seconds, B and a quick C 5 minutes, from the point of view of fair sharing of information, do you think this "time gap" has the necessary to fill? Investors who pay attention to high-frequency traders (HFT) and regulatory dynamics may have guessed what old man wanted to say. Unless the data provider Thomson Reuters "blew up", it decided to revise the three-tier system of information distribution associated with the University of Michigan's consumer confidence index in Friday to eliminate the highest level of service (6 of the reported monthly fee ...).

The financial market has become one of the first to adopt the machine learning (ML) market. Since the 1980s, people have been using ML to discover the laws of the market.

We already know that we want to have a generalization ability of models learned through machine learning. In a straightforward way, it is that the learned model not only works well in the training samples, but also works in new samples well.