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David Atienza Alonso

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Publications associées (385)

A Reconfigurable Network-on-Chip Architecture for Optimal Multi-Processor SoC Communication

Giovanni De Micheli, David Atienza Alonso

Network-on-Chip (NoC) has emerged as a very promising paradigm for designing scalable communication architecture for Systems on Chips (SoCs). However, NoCs designed to fulfill the bandwidth requirements between the cores of an SoC for a certain set of runn ...

2010

HTPCP: GNSS-R multi-channel correlation waveforms post-process solution for GOLD-RTR Instrument

David Atienza Alonso, Yi Guo

Global navigation satellite system reflectometry (GNSS-R) remote sensing is a new remote sensing technique of satellite navigation application. Essentially, it entails a method of remote sensing that receives and processes microwave signals reflected from ...

IEEE Press2010

Run-time Mapping of Applications on FPGA-based Reconfigurable Systems

David Atienza Alonso, Ivan Beretta

The role of Field-Programmable Gate Arrays (FPGAs) in System-on-Chip (SoC) design considerably increased in the last few years. Their established importance is due to the large amount of hardware resources they offer, as well as to their increasing perform ...

IEEE Press2010

Modeling and Dynamic Management of 3D Multicore Systems with Liquid Cooling

David Atienza Alonso, Ayse Kivilcim Coskun, José Luis Ayala Rodrigo

Three-dimensional (3D) circuits reduce communication delay in multicore SoCs, and enable efficient integration of cores, memories, sensors, and RF devices. However, vertical integration of layers exacerbates the reliability and thermal problems, and coolin ...

IEEE/IFIP Press2009

Through Silicon Via-Based Grid for Thermal Control in 3D Chips

Yusuf Leblebici, David Atienza Alonso, Vinod Pangracious, José Luis Ayala Rodrigo, Arvind Raj Mahankali Sridhar

3D stacked chips have become a promising integration technology for modern systems. The complexity reached in multi-processor systems has increased the communication delays between processing cores, and an effective way to diminish this impact on communica ...

Springer2009

Particle Swarm Optimization of Memory usage in Embedded Systems

David Atienza Alonso, José Luis Risco Martin

In this paper, we propose a dynamic, non-dominated sorting, multi-objective particle-swarm-based optimizer, named Hierarchical Non-dominated Sorting Particle Swarm Optimizer (H-NSPSO), for memory usage optimization in embedded systems. It significantly red ...

2009

A Control Theory Approach for Thermal Balancing of MPSoC

Giovanni De Micheli, David Atienza Alonso, Francesco Zanini

Thermal balancing and reducing hot-spots are two important challenges facing the MPSoC designers. In this work, we model the thermal behavior of a MPSoC as a control theory problem which enables the design of an optimum frequency controller without dependi ...

IEEE and ACM2009

Optimization of Dynamic Memory Managers for Embedded Systems Using Grammatical Evolution

David Atienza Alonso, José Luis Risco Martin

New portable consumer embedded devices must execute multimedia applications (e.g., 3D games, video players and signal processing software, etc.) that demand extensive memory accesses and memory usage at a low energy consumption. Moreover, they must heavily ...

ACM Press2009

A Stochastic Perturbative Approach to Design a Defect-Aware Thresholder in the Sense Amplifier of Crossbar Memories

Yusuf Leblebici, Giovanni De Micheli, David Atienza Alonso, Mohamed Haykel Ben Jamaa

The use of nanowire crossbars to build devices with large storage capabilities is a very promising architectural paradigm for forthcoming nanoscale memory devices. However, this new type of memory devices raises questions regarding how to test their correc ...

ACM/IEEE Press2009

Multi-Lead Wavelet-Based ECG Delineation on a Wearable Embedded Sensor Platform

Nicolas Boichat, David Atienza Alonso, Francisco Javier Rincon Vallejos, Nadia Khaled

This work is dedicated to the sensible optimization and porting of a multi-lead (ML) wavelet-transform (WT)-based electrocardiogram (ECG) wave delineator to a state-of-the-art commercial wearable embedded sensor platform with limited processing and storage ...

2009

Mixed Heuristic and Mathematical Programming Using Reference Points for Dynamic Data Types Optimization in Multimedia Embedded Systems

David Atienza Alonso, José Luis Risco Martin

New multimedia embedded applications are becoming increasingly dynamic. Thus, they cannot only rely on static data allocation, and must employ Dynamically-allocated Data Types (DDTs) to store their data and efficiently use the limited physical resources of ...

ACM Press2009

Exploration of Memory Hierarchy Configurations for Efficient Garbage Collection on High-Performance Embedded Systems

David Atienza Alonso

Modern embedded devices (e.g., PDAs, mobile phones) are now incorporating Java as a very popular implementation language in their designs. These new embedded systems include multiple applications that are dynamically launched by the user, which can produce ...

ACM Press2009

Optimal Multi-Processor SoC Thermal Simulation via Adaptive Differential Equation Solvers

Giovanni De Micheli, David Atienza Alonso, Ayse Kivilcim Coskun, Francesco Zanini

Thermal management is a critical challenge in the design of high performance multi-processor system-on-chips (MPSoCs). Therefore, accurate and fast thermal modeling tools are necessary for efficiently analyzing the thermal profiles of MPSoCs. This paper ad ...

IEEE/IFIP Press2009

Dynamic Thermal Management in 3D Multicore Architectures

Yusuf Leblebici, David Atienza Alonso, Ayse Kivilcim Coskun, José Luis Ayala Rodrigo

Technology scaling has caused the feature sizes to shrink continuously, whereas interconnects, unlike transistors, have not followed the same trend. Designing 3D stack architectures is a recently proposed approach to overcome the power consumption and dela ...

IEEE and ACM2009

Design of Compact Imperfection-Immune CNFET Layouts for Standard-Cell-Based Logic Synthesis

Giovanni De Micheli, David Atienza Alonso, Shashi Kanth Bobba, Jie Zhang

The quest for technologies with superior device characteristics has showcased Carbon Nanotube Field Effect Transistors (CNFETs) into limelight. Among the several design aspects necessary for today’s grail in CNFET technology, achieving functional immunity ...

2009

Multicore Thermal Management with Model Predictive Control

Giovanni De Micheli, David Atienza Alonso, Luca Benini, Francesco Zanini

The goal of thermal management is to meet maximum operating temperature constraints, while at the same time tracking timevarying performance requirements. Current approaches avoid thermal violations by forcing abrupt operating points changes (e.g. processo ...

IEEE Press2009

Implementation of an automated ECG-based diagnosis for a wireless body sensor platform

Giovanni De Micheli, David Atienza Alonso, Francisco Javier Rincon Vallejos, Nadia Khaled, Laura Gutiérrez Martín

Wireless Body Sensor Networks (WBSN) are poised to become a key enabling technology of personal systems for pervasive healthcare. Recent results have however shown that the conventional approach to their design, which consists in continuous wireless stream ...

Springer2009

Optimization Methodology of Dynamic Data Structures Based on Genetic Algorithms for Multimedia Embedded Systems

David Atienza Alonso, José Luis Risco Martin

Modern multimedia application exhibit high resource utilization. In order to efficiently run this kind of applications in embedded systems, the dynamic memory subsystem needs to be optimized. A key role in this optimization is played by the dynamic data st ...

2009

Thermal Balancing Policy for Multiprocessor Stream Computing Platforms

Giovanni De Micheli, David Atienza Alonso, Luca Benini

Die-temperature control to avoid hotspots is increasingly critical in Multiprocessor System-on-Chip (MPSoCs) for stream computing. In this context, thermal balancing policies based on task migration are a promising approach to re-distribute power dissipati ...

2009

Processor Speed Control with Thermal Constraints

Giovanni De Micheli, David Atienza Alonso, Srinivasan Murali

We consider the problem of adjusting speeds of multiple computer processors, sharing the same thermal environment, such as a chip or multichip package. We assume that the speed of each processor (and associated variables such as power supply voltage) can b ...

2009

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