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In this paper, we present our effort towards comprehensive traffic forecasting for big data applications using external, light-weighted file system monitoring. Our idea is motivated by the key observations that rich traffic demand information already exists in the log and meta-data files of many big data applications, and that such information can be readily extracted through run-time file system...
Prediction of stock market has attracted attention from industry to academia [1, 2]. Various machine learning algorithms such as neural networks, genetic algorithms, support vector machine, and others are used to predict stock prices.
Multi-PE and SIMD architectures are widely utilized to enhance computing power of embedded DSP processors. Design of such architectures may cost vast amount of computing resource. Allocation of computing resources becomes a critical design issue for embedded applications. If suitable hardware configurations and software algorithms can be explored in early design stage, enormous design time can be...
As DDR DRAM is running at higher and higher speed, the shrinking data windows makes the timing closure in setup and hold at either DRAM or host chip more and more difficult. When calculating timing margins for DDR2/3 system, it helps to break up the uncertainty contributions into transmitter, interconnect and receiver categories. Furthermore, based on the timing margins, the signal integrity and power...
Internet services are now the major service platforms to provide services for all sectors of business and industries. To assure the correctness for concurrent data access, transaction-based Internet service is a well-accepted computation model. Because of the proliferation of networked devices and globalization, internet services can barely undertake any service interruption during any time of the...
In this paper, we analyze the operational UMTS handover logs. The analysis result shows UMTS handover logs possessing more severe cell oscillation phenomenon compared to GSM. To eliminate the effect of cell oscillation phenomenon, we propose an approach to estimate the traffic state using UMTS handover logs. An experiment on a 12km road segment of Sun Yat-sen Freeway in Taiwan was conducted to verify...
Dynamic Binary Translation (DBT) is widely used, but it suffers from substantial overhead. Several methods are taken to improve its performance, such as linking/chaining, building super block according to profiling and/or tracing. Reorganizing code layout of software cache can also improve performance on the ground that the execution stream will be more approximate to its control flow. Once the target...
GPUs are many-core processors with tremendous computational power. However, as automatic parallelization has not been realized yet, developing high-performance parallel code for GPUs is still very challenging. The paper presents a novel translation framework designed for virtual execution environment based on CPU/GPU architecture. It addresses two major challenges of taking advantage of general purpose...
Networking is the practice of communicating and data sharing among devices, through wired or wireless network, and it is playing a pivotal role in our daily life. In other words, Networking is essential for information exchange. However, along with all the benefits from networking technologies, comes various of new challenges, such as network management, network discovery and selection, etc. Due to...
Grid computing architecture was defined to be a complete physical layer. The functions of information systems based on grid architecture are resources sharing, collaborative processing, etc. System performance is calculated from resource usages of all grid nodes. If we have load-balancing in all grid nodes, we will have good performance in the system. All the grid nodes are divided to supervisor,...
Motion estimation algorithms are used in various video coding systems. With the advent of VLSI technology, a large collection of processing elements can be assembled to achieve high-speed computation economically. Rather, the problem of testing a VLSI chip begins with introduction of a defect during the design or implementation phases. Therefore, this paper describes a novel testing scheme of motion...
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