【摘要】：云計算，作為一種計算資源的交付服務(wù)，依據(jù)服務(wù)資源的提供方式和資源整合的級別，通常被劃分為基礎(chǔ)設(shè)施即服務(wù)，平臺即服務(wù)和軟件即服務(wù)三個層次。而桌面即服務(wù)范式，衍生于軟件即服務(wù)，由于其高效性、可定制性的為用戶提供虛擬桌面系統(tǒng)和計算服務(wù)而越來越受到廣泛的關(guān)注。 現(xiàn)存的主流桌面交付服務(wù)通常是基于不同協(xié)議的圖片傳輸和壓縮機(jī)制，只能運(yùn)行于計算機(jī)環(huán)境中，且反應(yīng)較慢延時較大，不具備良好的實時交互性和用戶體驗性。而本論文所論述的虛擬桌面服務(wù)，探討了利用網(wǎng)絡(luò)和服務(wù)器-客戶端技術(shù)，，在現(xiàn)場可編程門陣列（FPGA）上實現(xiàn)服務(wù)的可能性。FPGA作為本論文中桌面服務(wù)應(yīng)用實現(xiàn)的處理單元，與網(wǎng)頁交互機(jī)制一起，降低了帶寬和功耗的需求，符合國家能源和諧可持續(xù)發(fā)展的戰(zhàn)略設(shè)想。同時，用戶可以不局限于計算機(jī)而是通過如智能手機(jī)等具有簡單瀏覽器的手持設(shè)備即可對服務(wù)進(jìn)行訪問。 本文提出并實現(xiàn)了一個基于FPGA的虛擬桌面服務(wù)系統(tǒng)。其中桌面服務(wù)的載體是由HTML/JavaScript語言所編寫的網(wǎng)頁形式提供，避免了頻繁的圖片同步，降低了網(wǎng)絡(luò)負(fù)載。系統(tǒng)后端采用了輕量級網(wǎng)絡(luò)協(xié)議棧和Java硬核處理器來搭建網(wǎng)絡(luò)服務(wù)器并處理動態(tài)請求。本文通過網(wǎng)頁形式模擬桌面系統(tǒng)結(jié)構(gòu)和感官，利用網(wǎng)絡(luò)請求與回應(yīng)來模擬系統(tǒng)行為處理。本文還探討了系統(tǒng)的功耗和能效，表明使用可重構(gòu)器件代替通用處理器完成比較固定的應(yīng)用可以降低功耗，提高性能，實現(xiàn)綠色桌面即服務(wù)的云計算具有較高的可行性。
[Abstract]:Cloud computing, as a delivery service of computing resources, is usually divided into three levels: infrastructure as a service, platform as a service and software as a service, according to the way of providing service resources and the level of resource integration. Desktop as a service paradigm, derived from software as a service, has attracted more and more attention because of its high efficiency and customizability to provide virtual desktop system and computing services to users. The existing mainstream desktop delivery services are usually based on different protocols of picture transmission and compression mechanism, can only run in the computer environment, and the response is slow delay, not good real-time interaction and user experience. The virtual desktop service discussed in this paper discusses the possibility of using network and server-client technology to realize the service on the field programmable gate array (FPGA). FPGA is used as the processing unit of desktop service application in this paper. In conjunction with the web interaction mechanism, the bandwidth and power requirements are reduced, which is in line with the strategic vision of harmonious and sustainable development of national energy resources. At the same time, users can access the service through handheld devices with simple browsers, such as smartphones, not limited to computers. This paper proposes and implements a virtual desktop service system based on FPGA. The desktop service is provided in the form of web pages written by HTML/JavaScript language, which avoids frequent picture synchronization and reduces network load. The system back-end uses lightweight network protocol stack and Java hard core processor to build network server and deal with dynamic request. This paper simulates the structure and senses of desktop system in the form of web pages, and simulates system behavior processing by network request and response. This paper also discusses the power consumption and energy efficiency of the system. It shows that it is feasible to use reconfigurable devices instead of the general processor to complete relatively fixed applications, which can reduce power consumption, improve performance and realize cloud computing with green desktop as a service.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP302;TP393.09

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