本文關(guān)鍵詞：面向高性能計算機的三維光電混合互連網(wǎng)絡(luò)研究　出處：《國防科學(xué)技術(shù)大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 高性能計算機 帶寬 延遲 光電混合互連網(wǎng)絡(luò)

【摘要】：當(dāng)前，提高單個計算節(jié)點的性能以及互連網(wǎng)絡(luò)的優(yōu)化和改進是提高高性能計算機性能的兩種有效手段。然而隨著集成電路工藝技術(shù)的快速發(fā)展，處理器內(nèi)高速電信號所帶來的量子效應(yīng)越來越明顯。單個處理器計算性能的提高遇到了極大的挑戰(zhàn)，因此全系統(tǒng)計算性能的提高主要是通過集成更多的處理器節(jié)點。由于電傳輸特性的限制，電互連網(wǎng)絡(luò)制約高性能計算機性能的進一步提高。光互連網(wǎng)絡(luò)由于具有帶寬高、延遲小、傳輸和交換光損耗小、干擾低等優(yōu)點，已經(jīng)成為解決電互連瓶頸的有效手段。 但是，在當(dāng)前技術(shù)條件下，沒有有效的光緩存器以及可用的全光處理器，對于一般的報文交換光互連系統(tǒng)中，在網(wǎng)絡(luò)節(jié)點中不得不將光信號轉(zhuǎn)換為電信號進行路由判斷和緩存，這將會引入額外的傳輸延遲。一種有效的解決方法是BOIN網(wǎng)絡(luò)采用的光電混合技術(shù)，將報文的控制信息和數(shù)據(jù)信息進行分離。真實數(shù)據(jù)報文使用光信號進行傳輸，而將控制信息使用電信號進行傳輸，以此來控制光數(shù)據(jù)的傳輸方向，使得報文在網(wǎng)絡(luò)中進行傳輸時無需光電轉(zhuǎn)換。然而BOIN網(wǎng)絡(luò)的二維互連結(jié)構(gòu)限制了其實際性能的進一步提高，在網(wǎng)絡(luò)規(guī)模較大時，其網(wǎng)絡(luò)性能限制更加明顯。本文針對光信號的技術(shù)限制以及BOIN網(wǎng)絡(luò)二維特點，研究了一種面向高性能計算機互連網(wǎng)絡(luò)的三維光電混合互連網(wǎng)絡(luò)技術(shù)，提出了一種三維的光互連網(wǎng)絡(luò)結(jié)構(gòu)（Three-Dimensional Optical Interconnection Network）。為了能夠充分發(fā)揮該網(wǎng)絡(luò)結(jié)構(gòu)優(yōu)勢，本文提出了一種XY優(yōu)先路由算法。最后，，采用實驗仿真和數(shù)學(xué)建模對TDOIN網(wǎng)絡(luò)的網(wǎng)絡(luò)性能進行了分析驗證。 本文的主要貢獻： 1.針對當(dāng)前光互連網(wǎng)絡(luò)中的不足和BOIN網(wǎng)絡(luò)的低維度，提出一種三維的光電混合互連網(wǎng)絡(luò)結(jié)構(gòu)TDOIN。本文研究了TDOIN網(wǎng)絡(luò)的拓撲結(jié)構(gòu)和報文沖突產(chǎn)生以及相應(yīng)的解決技術(shù)，提出了一種XY優(yōu)先的路由算法，并且簡要分析了該算法的網(wǎng)絡(luò)特性。 2.基于OMNeT++平臺設(shè)計了TDOIN網(wǎng)絡(luò)模擬器，通過該模擬器進行仿真實驗，并與BOIN網(wǎng)絡(luò)進行性能比較。由模擬結(jié)果可知，TDOIN網(wǎng)絡(luò)具有低延遲、高吞吐量特點。 3.為了評價TDOIN的網(wǎng)絡(luò)性能，利用概率論工具，建立TDOIN網(wǎng)絡(luò)處于穩(wěn)態(tài)情況的數(shù)學(xué)模型。該模型能夠精確刻畫TDOIN網(wǎng)絡(luò)在不同網(wǎng)絡(luò)規(guī)模、不同網(wǎng)絡(luò)負載下的網(wǎng)絡(luò)性能。 本文面向解決高性能計算機的互連需求，對光互連網(wǎng)絡(luò)進行了深入細致地研究，提出一種三維光電混合互連網(wǎng)絡(luò)結(jié)構(gòu)，研究了能夠適應(yīng)該結(jié)構(gòu)的路由算法，對網(wǎng)絡(luò)性能進行了仿真實驗和數(shù)學(xué)建模分析。上述研究成果對于高性能計算機光互連網(wǎng)絡(luò)的設(shè)計和實現(xiàn)具有一定的理論意義和參考價值，同時基于概率論的數(shù)學(xué)模型的建立能夠為光互連網(wǎng)絡(luò)的理論分析提供一定的借鑒意義。
[Abstract]:At present, improving the performance of single computing node and the optimization and improvement of interconnection network are two effective methods to improve the performance of high performance computer. However, with the rapid development of integrated circuit technology. The quantum effect caused by high speed electrical signal in the processor is becoming more and more obvious. The improvement of computing performance of single processor has met great challenges. Therefore, the improvement of the performance of the whole system is mainly through the integration of more processor nodes, due to the limitations of the electrical transmission characteristics. Electrical interconnection network restricts the further improvement of high performance computer performance. Optical interconnection network has the advantages of high bandwidth, small delay, low transmission and switching loss, low interference and so on. It has become an effective means to solve the bottleneck of electrical interconnection. However, under the current technological conditions, there is no effective optical buffer and available all-optical processors for the general packet switching optical interconnection system. In the network nodes, the optical signals have to be converted to electrical signals for routing judgment and buffer, which will introduce additional transmission delay. An effective solution is the optoelectronic hybrid technology used in BOIN networks. The control information of the message is separated from the data information. The real data message is transmitted by the optical signal, while the control information is transmitted by the electric signal to control the transmission direction of the optical data. However, the two-dimensional interconnection structure of BOIN network limits the further improvement of its actual performance, when the network scale is large. Aiming at the technical limitation of optical signal and the two-dimensional characteristics of BOIN network, a 3D hybrid optoelectronic interconnection network technology for high performance computer interconnection network is studied in this paper. A three-dimensional Optical Interconnection network is proposed. In order to give full play to the advantage of the network structure. In this paper, an XY priority routing algorithm is proposed. Finally, experimental simulation and mathematical modeling are used to analyze and verify the performance of TDOIN network. The main contributions of this paper are as follows: 1. Aiming at the deficiency of current optical interconnection network and the low dimension of BOIN network. A 3D hybrid optoelectronic interconnection network structure is proposed. The topology structure, message collision generation and corresponding solutions of TDOIN network are studied in this paper. An XY-first routing algorithm is proposed and its network characteristics are briefly analyzed. 2. The TDOIN network simulator is designed based on the OMNeT platform. The simulation experiment is carried out through the simulator, and the performance of the simulator is compared with that of the BOIN network. TDOIN networks are characterized by low latency and high throughput. 3. In order to evaluate the network performance of TDOIN, a probability theory tool is used. A mathematical model of the steady state of TDOIN network is established, which can accurately describe the network performance of TDOIN network under different network size and network load. In order to solve the interconnection requirements of high performance computers, the optical interconnection network is studied in detail in this paper, and a 3D hybrid optoelectronic interconnection network structure is proposed, and the routing algorithm which can adapt to this structure is studied. The simulation experiment and mathematical modeling analysis of the network performance are carried out. The above research results have certain theoretical significance and reference value for the design and implementation of high performance computer optical interconnection network. At the same time, the establishment of mathematical model based on probability theory can provide some reference for theoretical analysis of optical interconnection networks.
【學(xué)位授予單位】：國防科學(xué)技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP38

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