Home

Person

David Atienza Alonso

About
Privacy
Disclaimer

Graph Chatbot

Related publications (385)

A Quality-Scalable and Energy-Efficient Approach for Spectral Analysis of Heart Rate Variability

David Atienza Alonso, Mohamed Mostafa Sabry Aly, Andreas Peter Burg, Aviinaash Sankaranarayanan, Georgios Karakonstantis

Today there is a growing interest in the integration of health monitoring applications in portable devices necessitating the development of methods that improve the energy efficiency of such systems. In this paper, we present a systematic approach that ena ...

IEEE2014

Low Power and Scalable Many-Core Architecture for Big-Data Stream Computing

David Atienza Alonso, Martino Ruggiero, Karim Kanoun

In the last years the process of examining large amounts of different types of data, or Big-Data, in an effort to uncover hidden patterns or unknown correlations has become a major need in our society. In this context, stream mining applications are now wi ...

IEEE Press2014

A Unified Online Directed Acyclic Graph Flow Manager for Multicore Schedulers

David Atienza Alonso, Karim Kanoun

Numerous Directed-Acyclic Graph (DAG) schedulers have been developed to improve the energy efficiency of various multi-core systems. However, the DAG monitoring modules proposed by these schedulers make a priori assumptions about the workload and relations ...

2014

Power-Efficient Joint Compressed Sensing of Multi-Lead ECG Signals

Pierre Vandergheynst, David Atienza Alonso, Hossein Mamaghanian, Giovanni Ansaloni

Compressed Sensing (CS) is a new acquisition- compression paradigm for low-complexity energy-aware sensing and compression. By merging both sampling and compression, CS is very promising to develop practical ultra-low power read- out systems for wireless b ...

IEEE Press2014

A High-Level Synthesis Flow for the Implementation of Iterative Stencil Loop Algorithms on FPGA Devices

David Atienza Alonso, Ivan Beretta, Alessandro Antonio Nacci

The automatic generation of hardware implementations for a given algorithm is generally a difficult task, especially when data dependencies span across multiple iterations such as in iterative stencil loops (ISLs). In this paper, we introduce an automatic ...

IEEE/ACM Press2013

A Methodology for Embedded Classification of Heartbeats Using Random Projections

David Atienza Alonso, Ruben Braojos Lopez, Giovanni Ansaloni

Smart Wireless Body Sensor Nodes (WBSNs) are a novel class of unobtrusive, battery-powered devices allowing the continuous monitoring and real-time interpretation of a subject’s bio-signals. One of its most relevant applications is the acquisition and anal ...

2013

GreenCool: An Energy-Efficient Liquid Cooling Design Technique for 3-D MPSoCs Via Channel Width Modulation

David Atienza Alonso, Ayse Kivilcim Coskun, Arvind Raj Mahankali Sridhar, Jie Meng

Liquid cooling using interlayer microchannels has appeared as a viable and scalable packaging technology for 3-D multiprocessor system-on-chips (MPSoCs). Microchannel-based liquid cooling, however, can substantially increase the on-chip thermal gradients, ...

Institute of Electrical and Electronics Engineers2013

Synchronizing Code Execution on Ultra-Low-Power Embedded Multi-Channel Signal Analysis Platforms

David Atienza Alonso, Ahmed Yasir Dogan, Andreas Peter Burg, Ruben Braojos Lopez, Jeremy Hugues-Felix Constantin, Giovanni Ansaloni

Embedded biosignal analysis involves a considerable amount of parallel computations, which can be exploited by employing low-voltage and ultra-low-power (ULP) parallel computing architectures. By allowing data and instruction broadcasting, single instructi ...

2013

Markov Decision Process Based Energy-Efficient Scheduling For Slice-Parallel Video Decoding

David Atienza Alonso, Karim Kanoun

We consider the problem of energy-efficient scheduling for slice-parallel video decoders on multicore systems with Dynamic Voltage Frequency Scaling (DVFS) enabled processors. We rigorously formulate the problem as a Markov decision process (MDP), which si ...

IEEE Press2013

SIMinG-1k: A thousand-core simulator running on general-purpose graphical processing units

David Atienza Alonso, Luca Benini, Martino Ruggiero, Shivani Raghav

This paper introduces SIMinG-1k-a manycore simulator infrastructure. SIMinG-1k is a graphics processing unit accelerated, parallel simulator for design-space exploration of large-scale manycore systems. It features an optimal trade-off between modeling acc ...

Wiley-Blackwell2013

STEAM: a fast compact thermal model for two-phase cooling of integrated circuits

John Richard Thome, Yassir Madhour, David Atienza Alonso, Arvind Raj Mahankali Sridhar

Two-phase liquid cooling of computer chips via microchannels etched directly on silicon dies is a potential long-term solution to enable continued integration of high-performance multiprocessors. Two-phase cooling refers to the heat removal via evaporation ...

IEEE/ACM Press2013

A Combined Sensor Placement and Convex Optimization Approach for Thermal Management in 3D-MPSoC with Liquid Cooling

Giovanni De Micheli, David Atienza Alonso, Francesco Zanini

Modern high-performance processors employ thermal management systems, which rely on accurate readings of on-die thermal sensors. Systematic tools for analysis and determination of best allocation and placement of thermal sensors is therefore a highly relev ...

Elsevier Science Bv2013

Effects of Age, Sex and Treatment on Weight Loss Dynamics in Overweight People

David Atienza Alonso, Emiliano Luis Rincon Vallejos

The objective of this work is the evaluation of how sex, age and the kind of followed treatment affect weight loss, as well as the development of an explanation to assess the evolution of weight loss dynamics in overweight men and women. The methods use in ...

Canadian Science Publishing, Nrc Research Press2013

Markov Decision Process Based Energy-Efficient On-Line Scheduling for Slice Parallel Video Decoders on Multicore Systems

Pascal Frossard, David Atienza Alonso, Karim Kanoun

We consider the problem of energy-efficient on-line scheduling for slice-parallel video decoders on multicore systems. We assume that each of the processors are Dynamic Voltage Frequency Scaling (DVFS) enabled such that they can independently trade off per ...

Ieee-Inst Electrical Electronics Engineers Inc2013

Correlation-Aware Virtual Machine Allocation for Energy-Efficient Datacenters

David Atienza Alonso, Martino Ruggiero, Jungsoo Kim, Marcel Ledergerber

Server consolidation plays a key role to mitigate the continuous power increase of datacenters. The recent advent of scale-out applications (e.g., web search, MapReduce, etc.) necessitate the revisit of existing server consolidation solutions due to distin ...

ACM and IEEE Press2013

Design Methods for Parallel Hardware Implementation of Multimedia Iterative Algorithms

David Atienza Alonso, Ivan Beretta, Alessandro Antonio Nacci

Traditionally, parallel implementations of multimedia algorithms are carried out manually, since the automation of this task is very difficult due to the complex dependencies that generally exist between different elements of the data set. Moreover, there ...

Institute of Electrical and Electronics Engineers2013

Full System Simulation of Many-Core Heterogeneous SoCs using GPU and QEMU Semihosting

David Atienza Alonso, Luca Benini, Martino Ruggiero, Shivani Raghav

Modern system-on-chips are evolving towards complex and heterogeneous platforms with general-purpose processors coupled with massively parallel manycore accelerator fabrics (e.g. embedded GPUs). Platform developers are looking for efficient full-system sim ...

2012

Fast and Scalable Temperature-driven Floorplan Design in 3D MPSoCs

David Atienza Alonso, Martino Ruggiero, Alessandro Vincenzi

Temperature-driven floorplaners have been recently proposed to alleviate the thermal problem in 3D multi-processor systems-on-chip (MPSoC). However, the proposed algorithms fail to provide fast placement of the modules when the complexity and the number of ...

IEEE Press2012

Automatic online delineation of a multi-lead electrocardiogram bio signal

Pierre Vandergheynst, David Atienza Alonso, Francisco Javier Rincon Vallejos, Nadia Khaled, Hossein Mamaghanian

Method for automatic online delineation of an electrocardiogram (ECG) bio signal, said method comprising the detection of said bio signal through several leads followed by the combination of those multiple acquisitions into a single root-mean-squared (RMS) ...

2012

Embedded Real-Time ECG Delineation Methods: a Comparative Evaluation

David Atienza Alonso, Francisco Javier Rincon Vallejos, Ruben Braojos Lopez, Giovanni Ansaloni

Wireless sensor nodes (WSNs) have recently evolved to include a fair amount of computational power, so that advanced signal processing algorithms can now be embedded even in this extremely low-power platforms. An increasingly successful field of applicatio ...

IEEE Press2012

Page 13 of 20