Browsing by Subject "Distributed computer systems"

Now showing items 41-60 of 91

    • Conference Object  

      Fault-tolerant semi fast implementations of atomic read/write registers 

      Georgiou, Chryssis; Nicolaou, Nicolas C.; Shvartsman, A. A. (2006)
      This paper investigates time-efficient implementations of atomic read-write registers in message-passing systems where the number of readers can be unbounded. In particular we study the case of a single writer, multiple ...
    • Article  

      Grid resource ranking using low-level performance measurements 

      Tsouloupas, George; Dikaiakos, Marios D. (2007)
      This paper outlines a feasible approach to ranking Grid resources based on an easily obtainable application-specific performance model utilizing low-level performance metrics. First, Grid resources are characterized using ...
    • Conference Object  

      A grid-enabled digital library system for natural disaster metadata 

      Xing, Wei; Dikaiakos, Marios D.; Yang, Hua; Sphyris, Angelos; Eftichidis, George (2005)
      The need to organize and publish metadata about European research results in the field of natural disasters has been met with the help of two innovative technologies: the Open Grid Service Architecture (OGSA) and the ...
    • Conference Object  

      GridBench: A workbench for Grid benchmarking 

      Tsouloupas, George; Dikaiakos, Marios D. (2005)
      In this article we present the GridBench, an extensible tool for benchmarking and testing Grid resources. We give an overview of the GridBench services and tools that provide easy invocation of benchmarks and management ...
    • Conference Object  

      How to compare the performance of two SMT microarchitectures 

      Sazeides, Yiannakis; Juan, T. (Institute of Electrical and Electronics Engineers Inc., 2001)
      In this paper we discuss methods and metrics for comparing the performance of two simultaneous multithreading microarchitectures. We identify conditions under which the instructions-per-cycle metric may be misleading for ...
    • Conference Object  

      Hybrid CAC for MBMS-enabled 3G UMTS networks 

      Neophytou, Marios; Pitsillides, Andreas (2006)
      In this paper, a novel hybrid Connection Admission Control (CAC) scheme combining downlink transmission power and aggregate throughput in the case of dedicated and shared connection setup respectively, is presented ("DPTCAC: ...
    • Conference Object  

      A hybrid peer-to-peer solution for context distribution in mobile and ubiquitous environments 

      Hu, X.; Ding, Y.; Paspallis, Nearchos; Bratskas, Pyrros; Papadopoulos, George Angelos; Vanrompay, Y.; Pinheiro, M. K.; Berbers, Y. (2009)
      With the proliferation of mobile devices such as PDAs and smart-phones, users get accustomed to using them in their daily life. This raises the expectations for user-customized and environment-aware services. However, ...
    • Article  

      Implementing a generic component-based framework for telecontrol applications 

      Chimaris, Avraam N.; Papadopoulos, George Angelos (2007)
      The rapid growth of telecontrol systems is one of the major trends in today's network-oriented community. The implementation of generic frameworks, consisting of reusable components that can form the basis for the development ...
    • Article  

      Incorporating input/output operations into dynamic data-flow graphs 

      Evripidou, Paraskevas; Gaudiot, J. -L (1995)
      Driven by the 'side-effect' environment of sequential von Neumann computing, Input/Output operations have evolved as state operations on shared files. In parallel programs, if multiple instances of an I/O-performing process ...
    • Article  

      Information retrieval techniques for peer-to-peer networks 

      Zeinalipour-Yazdi, Constantinos D.; Kalogeraki, Vana; Gunopulos, Dimitrios (2004)
      An important challenge in peer-to-peer (P2P) networks is to efficiently search the contents of other peers. The authors survey existing search techniques for information retrieval in P2P networks, including recent techniques ...
    • Article  

      Integrating caching techniques on a content distribution network 

      Stamos, Kostas; Pallis, George C.; Vakali, Athena I. (2006)
      Web caching and replication tune capacity with performance and they have become essential components of the Web. In practice, caching and replication techniques have been applied in proxy servers and Content Distribution ...
    • Article  

      Internet computing: Using reputation to select workers from a pool 

      Christoforou, Evgenia; Fernández Anta, Antonio; Georgiou, Chryssis; Mosteiro, Miguel A. (2016)
      The assignment and execution of tasks over the Internet is an inexpensive solution in contrast with supercomputers. We consider an Internet-based Master-Worker task computing approach, such as SETI@home. A master process ...
    • Conference Object  

      IPMicra: An IP-address based location aware distributed web crawler 

      Papapetrou, Odysseas; Samaras, George S. (2004)
      Distributed crawling is able to overcome Important limitations of the traditional single-sourced web crawling systems. However, the optimal benefit of distributed crawling is usually limited to the sites hosting the crawlers, ...
    • Article  

      Linearizability in the presence of drifting clocks and under different delay assumptions 

      Eleftheriou, Maria; Mavronicolas, Marios (1999)
      The cost of usingmessag e-passing to implement linearizable read/write objects for shared memory multiprocessors with drifting clocks is studied. We take as cost measures the response times for performingread and write ...
    • Article  

      Long-lived Rambo: Trading knowledge for communication 

      Georgiou, Chryssis; Musiał, Peter M.; Shvartsman, A. A. (2007)
      Shareable data services providing consistency guarantees, such as atomicity (linearizability), make building distributed systems easier. However, combining linearizability with efficiency in practical algorithms is difficult. ...
    • Article  

      Meeting the deadline: On the complexity of fault-tolerant continuous gossip 

      Georgiou, Chryssis; Gilbert, S.; Kowalski, D. R. (2011)
      In this paper we introduce the problem of Continuous Gossip in which rumors are continually and dynamically injected throughout the network. Each rumor has a deadline, and the goal of a continuous gossip protocol is to ...
    • Conference Object  

      Mobile commerce: Vision and challenges (location and its management) 

      Samaras, George S. (Institute of Electrical and Electronics Engineers Inc., 2002)
      Mobile computing is distributed computing that involves elements whose location changes in the course of computation. Elements may be software components such as mobile agents or moving objects-data or hardware such as ...
    • Article  

      Modelling and implementing asynchronous timed multimedia frameworks using coordination principles 

      Papadopoulos, George Angelos (2005)
      This paper combines work done in the areas of Artificial Intelligence, Multimedia Systems and Coordination Programming to derive a framework for Distributed Multimedia Systems based on asynchronous timed computations ...
    • Article  

      Modelling control systems in an event-driven coordination language 

      Limniotes, Theophilos A.; Papadopoulos, George Angelos (2000)
      The paper presents the implementation of a railway control system, as a means of assessing the potential of coordination languages to be used for modelling software architectures for complex control systems using a ...
    • Article  

      MPI-FT: Portable fault tolerance scheme for MPI 

      Louca, Soulla P.; Neophytou, Neophytos; Lachanas, Adrianos; Evripidou, Paraskevas (2000)
      In this paper, we propose the design and development of a fault tolerant and recovery scheme for the Message Passing Interface (MPI). The proposed scheme consists of a detection mechanism for detecting process failures, ...