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Power consumption is a major obstacle for future exascale computing. We propose a low power high performance optical interconnect architecture based on AWGR with WDM wavelength routing for exascale systems. Theoretical analysis and simulation show its better performance compared with fat-tree architecture.
Virtualization is one of the key technologies in the evolution of computer networks. Recently, many research institutes, universities and companies are building Cloud computing platforms or networked testbed environment based on virtualization technologies. The reliability of virtual networks has become a hot topic, which has been attracting significant attentions in the network research community...
Mean Value Analysis (MVA) has long been a standard approach for performance analysis of computer systems. While the exact load-dependent MVA algorithm is an efficient technique for computer system performance modeling, it fails to address several features of multi-core platforms. In addition, the load-dependent MVA algorithm suffers from numerical difficulties under heavy load conditions. The goal...
A novel Trench Fast Recovery Diode (FRD) structure with injection control is proposed in this paper. The proposed structure achieves improved carrier profile without the need for excess lifetime control. This substantially improves the device performance, especially at extreme temperatures (-40 °C to 175 °C). The device maintains low leakage at high temperatures, and its Qrr and Irm do not degrade...
With the development of the storage medium, such as the emerging of the SSD, the tradition way of data distribution can't keep up with the pace of the storage device development. Specifically, for example, Traditional RAID only enhanced the performance or reliability in the single storage medium and all the data are distributed in the same storage medium. But with the wide range of using raid, the...
With the advance of nanofabrication techniques, people can fabricate the nano-devices using single atoms or molecules from bottom-up approach, which leads to a new field of molecular electronics[1]. Many experiments have been performed to measure quantum transport properties of molecular devices[2], [3]. At the same time, people have made a lot of research efforts to understand these properties from...
Today's storage systems and database systems are highly complex and configurable, which makes storage management intricate and costly. One critical aspect of storage management, particularly in large storage infrastructures (e.g. cloud storage), is to determine which application data sets to store on which devices. With a mechanism which has the ability to predict the performance of the storage device...
The last decade has seen an explosive growth in wireless network services and consequently an increasing demand of high data rates on wireless networks, and the demand of users on real-time traffic is growing. The quality of service (QoS) requirements of different applications are different, for example, the real-time applications are delay-sensitive, yet can tolerant certain data loss. An intrinsic...
Storage device performance prediction is a critical element of self-managed storage systems and application planning tasks, such as data assignment and configuration. We proposed a new hybrid method (RT-RBF), which combines regression tree (RT) and radial-based functions network(RBF), to model storage device performance. In our proposed algorithm, the RT is firstly used to split the large space of...
In this paper, a kind of novel alarming access scheme is proposed for the pervasive and mobile healthcare application. This algorithm makes use of the wasted bandwidth in Contention Free Period in order to reduce transmission latency of alarming packets. The performance evaluation shows that this scheme can reduce the delay time of the alarming frame, especially in handling the time-critical problem...
Since traditional TDM based voice switches can not be efficiently applied in the packet networks, improvements on data voice multiplexing based on TDM are needed for appropriate usage in some extent. Transforming TDM voice data into IP packets can realize flexible data switching, and in this work, we present a data voice multiplexing based scheme on the embedded micro processor MPC8280 to implement...
The flow field of the G4-73 centrifugal fan was numerically simulated with the software of Fluent. The numerical results show that large-scale vortex in volute were push forward, and the scale and intensity of vortex change in different circumferential cross section of the volute. A vortex-broken device was designed based on the idea of decrease flow loss and vortex noise through breaking large-scale...
Real-time Ethernet emerges as the primary supporting technology for the next generation of industrial communications. As real-time performance is critical in many industrial applications, how to evaluate it in industrial Ethernet becomes vitally important. In this paper a mathematical model using Network Calculus is presented to calculate the upper bound of end-to-end delay in hybrid networks.
Artificial neural network (ANN) and space mapping are recognized as two major recent advances in microwave CAD. ANNs can be trained to learn EM and physics behaviour from component data, and trained ANNs can be used in high-level circuit design. Space mapping has proved to be a breakthrough in engineering optimization allowing expensive EM optimization to be performed effectively with the help of...
Virtual logistics is a modern logistics mode in which logistics efficiency can be enhanced and logistics resources can be saved greatly, while as logistics information platform is the technical base for it. This paper studies the structure of virtual logistics information platform based on Multi-Agent. It first argues the whole framework of virtual logistics information platform is mainly constructed...
Topology virtualization techniques are proposed for NoC-based many-core processors with core-level redundancy to isolate hardware changes caused by on-chip defective cores. Prior work focuses on homogeneous cores with symmetric performance and optimizes on-chip communication only. However, core-to-core performance asymmetry due to manufacturing process variations poses new challenges for constructing...
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