Abstract:
PURPOSE: A system and a method for rendering images of a transmission electron microscope are provided to improve the processing speed in comparison with single computer by forming image process algorithms to be parallel with each other. CONSTITUTION: A user terminal connects to a rendering server of a grid computing base. A user terminal comprises a user interface for rendering of an electron microscope image. The rendering server renders the electron microscope image according to a work request from the user terminal. A data grid stores the electron microscope image data and is connected to the user terminal to transmit electron microscope image data. The data grid receives the rendered outcome from the user terminal and stores it.
Abstract:
PURPOSE: An apparatus for dynamic virtual machine placement and a method thereof are provided to increase resource efficiency of a whole cluster system, and to improve performance degradation of a virtual machine (VM) due to shared resource collision in a cloud computing system. CONSTITUTION: A cache miss rate collection part (71) collects cache miss rate of virtual machines included in nodes included in a cluster, and a VM rearrangement part (73) rearranges the VM according to the cache miss rate. A global phase VM rearrangement part of the VM rearrangement part includes a node selection part, a VM selection part and anode VM rearrangement part. The node selection part receives the cache miss rate information, and selects anode having maximum and minimum miss rate. The VM selection part selects a VM having maximum and minimum cache miss rate in the node having maximum and minimum cache miss rate. The node VM rearrangement part rearranges by exchanging the selected VM mutually. [Reference numerals] (71) Cache miss rate collection part; (73) VM rearrangement part
Abstract:
A grid computing based web crawler system and a method thereof are presented to select grid computing resource with lowest cost by considering geographical position of a web page. According to a grid computing based web crawling method, a surface web crawler service instance is dynamically generated by calling a service web crawler service factory(151) to perform surface web crawling of a corresponding web page when the web page is a surface web and then an index of the web page is generated. When the web page is a deep web, a deep web crawler service instance is dynamically generated by calling a deep web crawler service factory(152) to search a deep web search form in the corresponding web page and then the deep web search form is extracted from the deep web crawler service instance. A result page is generated by inputting a query to the deep web search form and then an index of a page is generated by extracting a keyword of the result page, to be returned to a caller.