Programa de Doctorat en Arquitectura i Tecnologia de Computadors: Recent submissions
Now showing items 1-20 of 98
Variational multiscale stabilization and local preconditioning for compressible flow
This thesis is about the stabilization of the numerical solution of the Euler and Navier- Stokes equations of compressible flow. When simulating numerically the flow equations, if no stabilization is added, the solution ...
Particle-in-cell algorithms for plasma simulations on heterogeneous architectures
During the last two decades, High-Performance Computing (HPC) has grown rapidly in performance by improving single-core processors at the cost of a similar growth in power consumption. The single-core processor improvement ...
Intelligent instrumentation techniques to improve the traces information-volume ratio
With ever more powerful machines being constantly deployed, it is crucial to manage the computational resources efficiently. This is important both from the point of view of the individual user, who expects fast results; ...
Towards instantaneous performance analysis using coarse-grain sampled and instrumented data
Nowadays, supercomputers deliver an enormous amount of computation power; however, it is well-known that applications only reach a fraction of it. One limiting factor is the single processor performance because it ultimately ...
Leveraging performance of 3D finite difference schemes in large scientific computing simulations
Gone are the days when engineers and scientists conducted most of their experiments empirically. During these decades, actual tests were carried out in order to assess the robustness and reliability of forthcoming product ...
A dependency-aware parallel programming model
Designing parallel codes is hard. One of the most important roadblocks to parallel programming is the presence of data dependencies. These restrict parallelism and, in general, to work them around requires complex analysis ...
Electromechanical large scale computational models of the ventricular myocardium
Els models computacionals del cor són una eina important que pot donar als investigadors biomèdics una font addicional d’informació per entendre el funcionament del miocardi. Els models numèrics poden ajudar a interpretar ...
Self-organized backpressure routing for the wireless mesh backhaul of small cells
The ever increasing demand for wireless data services has given a starring role to dense small cell (SC) deployments for mobile networks, as increasing frequency re-use by reducing cell size has historically been the most ...
HERMESH : a geometrical domain composition method in computational mechanics
With this thesis we present the HERMESH method which has been classified by us as a a composition domain method. This term comes from the idea that HERMESH obtains a global solution of the problem from two independent ...
Bounded model checking for asynchronous concurrent systems
Complex hardware systems become more and more ubiquitous in mission critical applications such as military, satellite, and medical to name but a few. In such applications, reliability remains a primary concern because a ...
AUGURES : profit-aware web infrastructure management
Over the last decade, advances in technology together with the increasing use of the Internet for everyday tasks, are causing profound changes in end-users, as well as in businesses and technology providers. The widespread ...
Efficient hardware/software co-designed schemes for low-power processors
Nowadays, we are reaching a point where further improving single thread performance can only be done at the expenses of significantly increasing power consumption. Thus, multi-core chips have been adopted by the industry ...
Rights and services interoperability for multimedia content management
The main goal of the work presented in this thesis is to describe the definition of interoperability mechanisms between rights expression languages and policy languages. Starting from languages interoperability, the intention ...
Raising the level of abstraction : simulation of large chip multiprocessors running multithreaded applications
The number of transistors on an integrated circuit keeps doubling every two years. This increasing number of transistors is used to integrate more processing cores on the same chip. However, due to power density and ILP ...
Improving multithreading performance for clustered VLIW architectures.
Very Long Instruction Word (VLIW) processors are very popular in embedded and mobile computing domain. Use of VLIW processors range from Digital Signal Processors (DSPs) found in a plethora of communication and multimedia ...
Application of clustering analysis and sequence analysis on the performance analysis of parallel applications
High Performance Computing and Supercomputing is the high end area of the computing science that studies and develops the most powerful computers available. Current supercomputers are extremely complex so are the applications ...
Design of a distributed memory unit for clustered microarchitectures
Power constraints led to the end of exponential growth in single–processor performance, which characterized the semiconductor industry for many years. Single–chip multiprocessors allowed the performance growth to continue ...
Mitosis based speculative multithreaded architectures
In the last decade, industry made a right-hand turn and shifted towards multi-core processor designs, also known as Chip-Multi-Processors (CMPs), in order to provide further performance improvements under a reasonable power ...
A trust-driven privacy architecture for vehicular ad-hoc networks
Vehicular Ad-Hoc NETworks (VANETs) are an emerging technology which aims to improve road safety by preventing and reducing traffic accidents. While VANETs offer a great variety of promising applications, such as, safety-related ...
Quality of service on ad-hoc wireless networks
Over the last years, Mobile Ad-hoc Networks (MANETs) have captured the attention of the research community. The flexibility and cost savings they provide, due to the fact that no infrastructure is needed to deploy a MANET, ...
