The proceedings contain 105 papers. The topics discussed include: authentication of online authorship or article based on hypothesis testing model;the study of hierarchical branch prediction architecture;fast, accurat...
ISBN:
(纸本)9780769544779
The proceedings contain 105 papers. The topics discussed include: authentication of online authorship or article based on hypothesis testing model;the study of hierarchical branch prediction architecture;fast, accurate on-chip data memory performance estimation;domain service acquisition and domain modeling based on feature model;automatic management of cyclic dependency among web services;building regionally spatial appearance model by topological color histogram;a novel video steganography based on non-uniform rectangular partition;analyzing a batch range proof to address a security concern;the analysis of load balance for wireless sensor network using compressive sensing;distributing subsystems across different kernels running simultaneously in a multi-core architecture;research on equal symmetric distributed fault-tolerant architecture and strategy for parallel satellite system;and a self starting block Adams methods for solving stiff ordinary differential equation.
The recent increased use of workflow management systems by large scientific collaborations presents the challenge of highly dynamic data placement in distributedsystems. Such data placement may be constrained by the ...
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The recent increased use of workflow management systems by large scientific collaborations presents the challenge of highly dynamic data placement in distributedsystems. Such data placement may be constrained by the enforcement of data placement policies. We present a Policy based Data Placement Service that enforces data placement policies, interfaces with workflow managers and improves workflow efficiency by offloading data staging jobs from workflows.
Currently there exist many kinds of semantic Web Service models on the internet. They are heterogeneous so that it is hard to understand and interoperate each other. In this paper, we study several mainstream semantic...
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ISBN:
(纸本)9780769543499
Currently there exist many kinds of semantic Web Service models on the internet. They are heterogeneous so that it is hard to understand and interoperate each other. In this paper, we study several mainstream semantic Web Service models, and extract meta-models for each from the perspective of semantic Web Service discovery. Based on this, we propose the universal meta-model for semantic Web Service registration within the background of meta-model framework for interoperability (MFI, ISO/IEC19763). Some cases are studied and infrastructure supporting our work is demonstrated. The work in the paper may be regarded as an extension to UDDI on service semantics facet, and has been proposed to ISO as ISO/IEC 19763 Part 7.
Complex real-time embedded systems require guarantees regarding the assurance of their timing requirements. Such guarantees can be derived using advanced design and analysis methods. Many design solutions address the ...
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Complex real-time embedded systems require guarantees regarding the assurance of their timing requirements. Such guarantees can be derived using advanced design and analysis methods. Many design solutions address the complexity of these systems using component-based techniques. In this paper we focus on resource sharing in component-based systems with several components executing on a multi-core processor. We consider that the tasks of each component can be scheduled on any core with the possibility of two tasks belonging to the same component executing in parallel. We propose the parallel Hierarchical Resource Policy, a novel resource sharing policy for multi-core component-based systems. We also develop a detailed response-time based schedulability analysis for the individual components and for the composed system, assuming that intra- and inter-component resource sharing takes place.
Brazil, like other emerging countries such as China and India are increasing significantly their importance as global players. The Brazilian economic relevance gains more importance with its economic growth and indust...
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Brazil, like other emerging countries such as China and India are increasing significantly their importance as global players. The Brazilian economic relevance gains more importance with its economic growth and industry expansion. This economic growth also reflects on embedded systems design that expands following the market demand for new products. The Brazilian developments are ubiquitous in different areas: industrial automation, automobiles, home appliances, electronic consumers etc. A statistical survey was conducted to evaluate the embedded system development in Brazil, to identify the developer's profile and the main characteristics of embedded projects. The main results indicate that Brazilian embedded developer is generally young, no older than 35 years old and has a maximum of 10 years of embedded system design experience. They also show that embedded project developed in Brazil, are commonly linked to new products, last more than 6 months and usually are delayed considering the initial schedule.
iWARP is a state of the art high-speed connection-based RDMA networking technology for Ethernet networks to provide InfiniBand-like zero-copy and one-sided communication capabilities over Ethernet. Despite the benefit...
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ISBN:
(纸本)9780769543857
iWARP is a state of the art high-speed connection-based RDMA networking technology for Ethernet networks to provide InfiniBand-like zero-copy and one-sided communication capabilities over Ethernet. Despite the benefits offered by iWARP, many data center and web-based applications, such as stock-market trading and media-streaming applications, that rely on data gram-based semantics (mostly through UDP/IP) cannot take advantage of it because the iWARP standard is only defined over reliable, connection-oriented transports. This paper presents an RDMA model that functions over reliable and unreliable data grams. The ability to use data grams significantly expands the application space serviced by iWARP and can bring the scalability advantages of a connectionless transport to iWARP. In our previous work, we had developed an iWARP data gram solution using send/receive semantics showing excellent memory scalability and performance benefits over the current TCP-based iWARP. In this paper, we demonstrate an improved iWARP design that provides true RDMA semantics over data grams. Specifically, because traditional RDMA semantics do not map well to unreliable communication, we propose RDMA Write-Record, the first and the only method capable of supporting RDMA Write over both unreliable and reliable data grams. We demonstrate through a proof-of-concept software implementation that data gram-iWARP is feasible for real-world applications. Our proposed RDMA Write-Record method has been designed with data loss in mind and can provide superior performance under conditions of packet loss. It is shown through micro-benchmarks that by using RDMA capable data gram-iWARP a maximum of 256% increase in large message bandwidth and a maximum of 24.4% improvement in small message latency can be achieved over traditional iWARP. For application results we focus on streaming applications, showing a 24% improvement in memory usage and up to a 74% improvement in performance, although the proposed a
Embedded systems with several heterogeneous processors require scheduling techniques that are able to make use of the parallel processors while at the same time keeping resource consumption low. In this paper, we ther...
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Embedded systems with several heterogeneous processors require scheduling techniques that are able to make use of the parallel processors while at the same time keeping resource consumption low. In this paper, we therefore introduce a scheduling algorithm that considers timing and energy requirements for computation and communication and allows deadlines on program parts. The software applications are represented by Synchronous Dataflow Graphs (SDF) as these allow one to represent software concurrency and enable effective scheduling on multi-processor platforms. We suggest a scheduling heuristic that generates a number of possible schedules for an SDF representation of a parallelizable program, ranging from fast schedules with high energy consumption to slow schedules with lower energy consumption. Besides being able to choose only schedules that satisfy a specific global deadline or do not exceed a certain energy consumption, we allow individual constraints on single nodes of the SDF graph. The problems arising from including such constraints into the scheduling and adapting the heuristic accordingly are explained. The performance of our scheduling heuristic is illustrated on randomly generated graphs.
Complex service-oriented networked applications can be built in a flexible way by appropriate composition of individual services. Services are self-contained pieces of functionality that reside in remote nodes in the ...
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Network resources monitoring and management is critical to ensure security and load balance of network and information system, especially in the increasingly extensively used cloud computing and distributedparallel a...
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Network resources monitoring and management is critical to ensure security and load balance of network and information system, especially in the increasingly extensively used cloud computing and distributedparallel architecture. This paper presents a distributed network resources monitoring solution based on multi-agent and matrix grammar. A distributed multi-agent architecture for network resources monitoring is described. The paper proposes a generic matrix grammar which uses WMI, CIM and SNMP to remotely collect and manage data from network components. The matrix grammar provides a generic mechanism to describe what to be monitored, how to collect and process data. A monitoring automation engine consisting of a matrix analyzer and a recipe processor is described. The proposed solution has good extensibility, scalability, and enables monitoring automation and software reusability.
作者:
Pierre RiteauIRISA
INRIA Rennes-Bretagne Atlantique University of Rennes I Rennes France
The emergence of cloud computing infrastructures brings new ways to build and manage computing systems, with the flexibility offered by virtualization technologies. In this context, this PhD thesis focuses on two prin...
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The emergence of cloud computing infrastructures brings new ways to build and manage computing systems, with the flexibility offered by virtualization technologies. In this context, this PhD thesis focuses on two principal objectives. First, leveraging virtualization and cloud computing infrastructures to build distributed large scale computing platforms from multiple cloud providers, allowing to run software requiring large amounts of computation power. Second, developing mechanisms to make these infrastructures more dynamic. These mechanisms, providing inter-cloud live migration, offer new ways to exploit the inherent dynamic nature of distributed clouds.
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