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David Atienza Alonso

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Related publications (385)

Method to determine the distribution of temperature sensors

Martin Vetterli, Amina Chebira, David Atienza Alonso, Juri Ranieri, Alessandro Vincenzi

Apparatus comprising M sensors for measuring the temperature on M locations of the apparatus and an estimator configured to estimate a temperature vector of the apparatus with N temperature variables, whereby the estimator is configured to approximate the ...

2014

Ultra-Low Power Multicore Architecture For Parallel Biomedical Signal Processing

David Atienza Alonso, Ahmed Yasir Dogan, Andreas Peter Burg, Jeremy Hugues-Felix Constantin

A multi-core architecture with ultra-low power consumption is needed for a wide variety of applications, especially in the bio-medical domain. In this patent, an ultra-low power multi-core architecture is presented: it is composed of one or more cores, sev ...

2014

OCEAN: An Optimized HW/SW Reliability Mitigation Approach for Scratchpad Memories in Real-Time SoCs

David Atienza Alonso, Mohamed Mostafa Sabry Aly

Recent process technology advances trigger reliability issues that degrade the Quality-of-Service (QoS) required by embedded Systems-on-Chip (SoCs). To maintain the required QoS with acceptable overheads, we propose OCEAN, a novel cross-layer error mitigat ...

ACM2014

Integrated Microfluidic Power Generation and Cooling for Bright Silicon MPSoCs

David Atienza Alonso, Mohamed Mostafa Sabry Aly, Arvind Raj Mahankali Sridhar, Bruno Michel

The soaring demand for computing power in our digital information age has produced as collateral undesirable effect a surge in power consumption and heat density for computing servers. Accordingly, 30-40% of the energy consumed in state-of-the-art servers ...

IEEE/ACM Press2014

Temperature-Aware Design and Management for 3D Multi-Core Architectures

David Atienza Alonso, Mohamed Mostafa Sabry Aly

Vertically-integrated 3D multiprocessors systems-on-chip (3D MPSoCs) provide the means to continue integrating more functionality within a unit area while enhancing manufacturing yields and runtime performance. However, 3D MPSoCs incur amplified thermal ch ...

2014

Hardware/Software Approach for Code Synchronization in Low-Power Multi-Core Sensor Nodes

David Atienza Alonso, Ruben Braojos Lopez, Ivan Beretta, Giovanni Ansaloni

Latest embedded bio-signal analysis applications, targeting low-power Wireless Body Sensor Nodes (WBSNs), present conflicting requirements. On one hand, bio-signal analysis applications are continuously increasing their demand for high computing capabiliti ...

IEEE/ACM Press2014

Resolving the Memory Bottleneck for Single Supply Near-Threshold Computing

David Atienza Alonso, Mohamed Mostafa Sabry Aly

This paper focuses on a review of state-of-the-art memory designs and new design methods for near-threshold computing (NTC). In particular, it presents new ways to design reliable low-voltage NTC memories cost-effectively by reusing available cell librarie ...

IEEE/ACM Press2014

PowerCool: Simulation of Integrated Microfluidic Power Generation in Bright Silicon MPSoCs

David Atienza Alonso, Arvind Raj Mahankali Sridhar, Bruno Michel

Integrated microfluidic power generation and power delivery promises to be a disruptive packaging technology with the potential to combat dark silicon. It essentially consists of integrated microchannel-based electrochemical “flow cells” in a 2D/3D multipr ...

IEEE/ACM Press2014

Early Classification of Pathological Heartbeats on Wireless Body Sensor Nodes

David Atienza Alonso, Ruben Braojos Lopez, Ivan Beretta, 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, such as the electrocardiogram (ECG). These low-power platforms, w ...

MDPI2014

Ultra-Low Power Design of Wearable Cardiac Monitoring Systems

David Atienza Alonso, Srinivasan Murali, Francisco Javier Rincon Vallejos, Hossein Mamaghanian, Ruben Braojos Lopez, Giovanni Ansaloni, Alair Dias Junior

This paper presents the system-level architecture of novel ultra-low power wireless body sensor nodes (WBSNs) for real-time cardiac monitoring and analysis, and discusses the main design challenges of this new generation of medical devices. In particular, ...

IEEE2014

Risk Assessment of Atrial Fibrillation: a Failure Prediction Approach

David Atienza Alonso, Ruben Braojos Lopez, Daniel Camilo Rojas Quirós, Giovanni Ansaloni

We present a methodology for identifying patients who have experienced Paroxysmal Atrial Fibrillation (PAF) among a given subject population. Our work is intended as an initial step towards the design of an unobtrusive portable system for concurrent detect ...

Institute of Electrical and Electronics Engineers2014

Global Fan Speed Control Considering Non-Ideal Temperature Measurements in Enterprise Servers

David Atienza Alonso, Mohamed Mostafa Sabry Aly, Jungsoo Kim

Time lag and quantization in temperature sensors in enterprise servers lead to stability concerns on existing variable fan speed control schemes. Stability challenges become further aggravated when multiple local controllers are running together with the f ...

IEEE/ACM Press2014

Approximate Compressed Sensing: Ultra-Low Power Biosignal Processing via Aggressive Voltage Scaling on a Hybrid Memory Multi-core Processor

Pierre Vandergheynst, David Atienza Alonso, Luca Benini, Hossein Mamaghanian

Technology scaling enables the design of low cost biosignal processing chips suited for emerging wireless body-area sensing applications. Energy consumption severely limits such applications and memories are becoming the energy bottleneck to achieve ultra- ...

IEEE/ACM Press2014

A Semi-Analytical Thermal Modeling Framework for Liquid-Cooled ICs

David Atienza Alonso, Mohamed Mostafa Sabry Aly, Arvind Raj Mahankali Sridhar

While possessing the potential to replace conventional air-cooled heat sinks, inter-tier microchannel liquid cooling of 3D ICs also creates the problem of increased thermal gradients from the fluid inlet to outlet ports [1, 2]. These cooling-induced therma ...

Institute of Electrical and Electronics Engineers2014

A semi-analytical approach for optimized design of microchannel liquid-cooled ICs

David Atienza Alonso, Arvind Raj Mahankali Sridhar

The development of embedded and interlayer liquid cooling in integrated circuits (ICs) using silicon microchannels has gained interest in the recent years owing to the rise of on-chip heat uses that aggravate thermal reliability issues of the emerging 3D s ...

IEEE Press2014

Ultra-Low Power Design of Wearable Cardiac Monitoring Systems

David Atienza Alonso, Srinivasan Murali, Francisco Javier Rincon Vallejos, Hossein Mamaghanian, Ruben Braojos Lopez, Giovanni Ansaloni, Alair Dias Junior

IEEE/ACM Press2014

3D-ICE: a Compact Thermal Model for Early-Stage Design of Liquid-Cooled ICs

David Atienza Alonso, Arvind Raj Mahankali Sridhar, Alessandro Vincenzi

Liquid-cooling using microchannel heat sinks etched on silicon dies is seen as a promising solution to the rising heat fluxes in two-dimensional and stacked three-dimensional integrated circuits. Development of such devices requires accurate and fast therm ...

Institute of Electrical and Electronics Engineers2014

Online Energy-Efficient Task-Graph Scheduling for Multicore Platforms

David Atienza Alonso, Karim Kanoun

Numerous Directed-Acyclic Graph (DAG) schedulers have been developed to improve the energy efficiency of various multi-core platforms. However, these schedulers make a priori assumptions about the relationship between the task dependencies, and they are un ...

Institute of Electrical and Electronics Engineers2014

A Mapping-Scheduling Algorithm for Hardware Acceleration on Reconfigurable Platforms

David Atienza Alonso, Ivan Beretta, Juan Antonio Clemente Barreira

Reconfigurable platforms are a promising technology that offers an interesting trade-off between flexibility and performance, which many recent embedded system applications demand, especially in fields such as multimedia processing. These applications typi ...

Assoc Computing Machinery2014

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 ...

IEEE2014

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