Recursos de colección

Biblioteca Digital do IPB (53.442 recursos)

A Biblioteca Digital do IPB, tem por objectivo divulgar e permitir o livre acesso à produção científica produzida pela comunidade académica, promovendo a integração, partilha e a visibilidade da informação científica e garantindo a preservação da memória intelectual do Instituto Politécnico de Bragança.

DIC - EC - Artigos em Revistas Indexadas

Mostrando recursos 1 - 5 de 5

  1. RoCL: a resource oriented communication library

    Alves, Albano; Pina, António; Rufino, José; Exposto, José
    RoCL is a communication library that aims to exploit the low-level communication facilities of today’s cluster networking hardware and to merge, via the resource oriented paradigm, those facilities and the high-level degree of parallelism achieved on SMP systems through multi-threading. The communication model defines three major entities – contexts, resources and buffers – which permit the design of high-level solutions. A low-level distributed directory is used to support resource registering and discovering. The usefulness and applicability of RoCL is briefly addressed through a basic modelling example – the implementation of TPVM over RoCL. Performance results for Myrinet and Gigabit Ethernet, currently supported...
    - 31-may-2018

  2. Delegation of expressions for distributed SNMP information processing

    Lopes, Rui Pedro; Oliveira, José
    Due to the scalability problems of SNMP, management distribution has been an important topic during the last years. The DISMAN workgroup propose a set of MIB modules to address this matter. One of the DISMAN modules has the capability of using expressions to perform decentralized processing of management information - the Expression MIB. Although it is essential to network management, the Expression MIB is not as well known as other DISMAN modules, such as the Script MIB, and not as available in terms of implementations. This paper focuses on the Expression MIB features, its implementation details and it also discusses, from...
    - 31-may-2018

  3. Domus - an architecture for cluster-oriented distributed Hash tables

    Rufino, José; Pina, António; Alves, Albano; Exposto, José
    This paper presents a high level description of Domus, an architecture for cluster-oriented Distributed hash Tables. As a data management layer, Domus supports the concurrent execution of multiple and heterogeneous DHTs, that may be simultaneously accessed by different distributed/parallel client applications. At system level, a load balancement mechanism allows for the (re)distribution of each DHT over cluster nodes, based on the monitoring of their resources, including CPUs, memory, storage and network. Two basic units of balancement are supported: vnodes, a coarse-grain unit, and partitions, a fine-grain unit. The design also takes advantage of the strict separation of object lookup and storage,...
    - 31-may-2018

  4. Bridging the gap between cluster and grid computing

    Alves, Albano; Pina, António
    The Internet computing model with its ubiquitous networking and computing infrastructure is driving a new class of interoperable applications that benefit both from high computing power and multiple Internet connections. In this context, grids are promising computing platforms that allow to aggregate distributed resources such as workstations and clusters to solve large-scale problems. However, because most parallel programming tools were primarily developed for MPP and cluster computing, to exploit the new environment higher abstraction and cooperative interfaces are required. Rocmeμ is a platform originally designed to support the operation of multi-SAN clusters that integrates application modeling and resource allocation. In...
    - 31-may-2018

  5. Distributed paged Hash tables

    Rufino, José; Pina, António; Alves, Albano; Exposto, José
    In this paper we present the design and implementation of DPH, a storage layer for cluster environments. DPH is a Distributed Data Structure (DDS) based on the distribution of a paged hash table. It combines main memory with file system resources across the cluster in order to implement a distributed dictionary that can be used for the storage of very large data sets with key based addressing techniques. The DPH storage layer is supported by a collection of cluster-aware utilities and services. Access to the DPH interface is provided by a user-level API. A preliminary performance evaluation shows promising results.
    - 31-may-2018

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