Sökning: "parallel efficiency"

Visar resultat 1 - 5 av 268 avhandlingar innehållade orden parallel efficiency.

  1. 1. Application of Parallel Computers to Enhance the Flow Modelling Capability in Aircraft Design

    Författare :Mattias Sillén; Dan Loyd; Peter Eliasson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flow modelling; parallel computer; parallel efficiency; turbulence modelling; aircraft design; CFD; Fluid mechanics; Strömningsmekanik;

    Sammanfattning : The development process for new aircraft configurations needs to be more efficient in terms of performance, cost and time to market. The potential to influence these factors is highest in early design phases. Thus, high confidence must be established in the product earlier than today. LÄS MER

  3. 2. EFFICIENCY OF FLEXIBLE FIXTURES: DESIGN AND CONTROL

    Författare :Ilker Erdem; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; control; design; fixture; assembly; manufacturing; efficiency; flexible; production;

    Sammanfattning : The manufacturing industries have been using flexible production technologies to meet the demand for customisation. As a part of production, fixtures have remained limited to dedicated technologies, even though numerous flexible fixtures have been studied and proposed by both academia and industry. LÄS MER

  4. 3. Techniques for Enhancing the Efficiency of Transactional Memory Systems

    Författare :Shady Issa; Paolo Romano; Vladimir Vlassov; Mats Brorsson; Konstantin Busch; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transactional Memory; Parallel Programming; Concurrency Control; Self-tuning; Energy Efficiency; Data Partitioning; Dynamic Frequency and Voltage Scaling DVFS ; Hardware Transactional Memory HTM ; Memória Transacional; Programação Paralela; Eficiência Energética; Mecanismos de Auto-configuração; Partição de Dados; Frequência Dinâmica e do Escalonamento de Voltagem DVFS ; Memória Transacional em Hardware HTM ; Transaktionellt Minne; Parallellprogrammering; Samtida Exekvering; Självjusterande; Energieffektivitet; Datapartitionering; Dynamisk Frekvens och Volttalsskalning; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : Transactional Memory (TM) is an emerging programming paradigm that drastically simplifies the development of concurrent applications by relieving programmers from a major source of complexity: how to ensure correct, yet efficient, synchronization of concurrent accesses to shared memory. Despite the large body of research devoted to this area, existing TM systems still suffer from severe limitations that hamper both their performance and energy efficiency. LÄS MER

  5. 4. Energy Efficiency Comparison Between Two-level and Multilevel Inverters for Electric Vehicle Applications

    Författare :Oskar Josefsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electric Vehicle EV ; Drive Cycle; Plug-in Electric Vehicle PEV ; Multilevel Inverter MLI ; Two-level Inverter TLI ; Efficiency.; Integrated Charger;

    Sammanfattning : In order to contribute to the development of energy and cost efficient electric vehicles, a thorough analysis of two different electric converter topologies is performed, considering different drive cycles and different control strategies. In the electric vehicles available on the market today, a high voltage (200−400 V ) battery pack composed of several battery modules is connected to one or more inverters which create AC voltages to the electric propulsion machines. LÄS MER

  7. 5. Throughput and energy efficiency of lock-free data structures: Execution Models and Analyses

    Författare :Aras Atalar; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Modeling; Data Structures; Throughput; Concurrency; Energy Efficiency; Parallel Computing; Analysis; Performance; Lock-free;

    Sammanfattning : Concurrent data structures are key program components to harness the available parallelism in multi-core processors. Lock-free algorithmic implementations of concurrent data structures offer high scalability and possess desirable properties such as immunity to deadlocks, convoying and priority inversion. LÄS MER