Design of an Architectural Model for the Coffee Processor Using ArchC

The present work is aimed to provide the clearest description possible of the COFFEE RISC core model written through the ArchC software and simulate its behaviour. In this sense, we explore the software applications used for instruction set simulation focusing on the ArchC tools and their features. According to the guidelines of this software, a cycle-accurate description of the COFFEE core architecture is developed, which is used to synthesize a timed instruction set simulator and an assembler. Our work also contains some elements of analysis concerning the ArchC tools and the resulting instruction set simulator in order to evaluate their characteristics and capabilities for hardware architecture modeling purposes. We did not emphasize only on the features of the ArchC tools at the current status of development but also the projection of this software for future implementations. /Kir1

Noise estimation for hyperspectral subspace identification on FPGAs

[EN] We present a reliable and efficient FPGA implementation of a procedure for the computation of the noise estimation matrix, a key stage for subspace identification of hyperspectral images. Our hardware realization is based on numerically stable orthogonal transformations, avoids the numerical difficulties of the normal equations method for the solution of linear least squares problems (LLS), and exploits the special relations between coupled LLS problems arising in the hyperspectral image. Our modular implementation decomposes the QR factorization that comprises a significant part of the cost into a sequence of suboperations, which can be efficiently computed on an FPGA.This work was supported by MINECO Projects TIN2014-53495-R and TIN2013-40968-P.León, G.; González, C.; Mayo Gual, R.; Mozos, D.; Quintana-Ortí, ES. (2019). Noise estimation for hyperspectral subspace identification on FPGAs. The Journal of Supercomputing. 75(3):1323-1335. https://doi.org/10.1007/s11227-018-2425-313231335753Anderson E et al (1999) E LAPACK users’ guide, 3rd edn. SIAM, PhiladelphiaBenner P, Novaković V, Plaza A, Quintana-Ortí ES, Remón A (2015) Fast and reliable noise estimation for Hyperspectral subspace identification. IEEE Geosci Remote Sens Lett 12(6):1199–1203Bioucas-Dias J, Nascimento J (2008) Hyperspectral subspace identification. IEEE Trans Geosci Remote Sens 46:2435–2445Bioucas-Dias J, Plaza A, Dobigeon N, Parente M, Du Q, Gader P, Chanussot J (2012) Hyperspectral unmixing overview: geometrical, statistical, and sparse regression-based approaches. IEEE JSTARS 5(2):354–379Björck A (1996) Numerical methods for least squares problems. Society for Industrial and Applied Mathematics (SIAM), PhiladelphiaGunnels JA, Gustavson FG, Henry GM, van de Geijn RA (2001) FLAME: formal linear algebra methods environment. ACM Trans Math Softw 27(4):422–455. https://doi.org/10.1145/504210.504213Kerekes J, Baum J (2002) Spectral imaging system analytical model for subpixel object detection. IEEE Trans Geosci Remote Sens 40(5):1088–1101León G, González C, Mayo R, Quintana-Ortí ES, Mozos D (2017) Energy-efficient QR factorization on FPGAs. In: Proceedings of 17th International Conference on Computational and Mathematical Methods in Science and Engineering (CMMSE 2017), Cádiz, Spai

TFG 2013/2014

Amb aquesta publicació, EINA, Centre universitari de Disseny i Art adscrit a la Universitat Autònoma de Barcelona, dóna a conèixer el recull dels Treballs de Fi de Grau presentats durant el curs 2013-2014. Voldríem que un recull com aquest donés una idea més precisa de la tasca que es realitza a EINA per tal de formar nous dissenyadors amb capacitat de respondre professionalment i intel·lectualment a les necessitats i exigències de la nostra societat. El treball formatiu s’orienta a oferir resultats que responguin tant a paràmetres de rigor acadèmic i capacitat d’anàlisi del context com a l’experimentació i la creació de nous llenguatges, tot fomentant el potencial innovador del disseny.Con esta publicación, EINA, Centro universitario de diseño y arte adscrito a la Universidad Autónoma de Barcelona, da a conocer la recopilación de los Trabajos de Fin de Grado presentados durante el curso 2013-2014. Querríamos que una recopilación como ésta diera una idea más precisa del trabajo que se realiza en EINA para formar nuevos diseñadores con capacidad de responder profesional e intelectualmente a las necesidades y exigencias de nuestra sociedad. El trabajo formativo se orienta a ofrecer resultados que respondan tanto a parámetros de rigor académico y capacidad de análisis, como a la experimentación y la creación de nuevos lenguajes, al tiempo que se fomenta el potencial innovador del diseño.With this publication, EINA, University School of Design and Art, affiliated to the Autonomous University of Barcelona, brings to the public eye the Final Degree Projects presented during the 2013-2014 academic year. Our hope is that this volume might offer a more precise idea of the task performed by EINA in training new designers, able to speak both professionally and intellectually to the needs and demands of our society. The educational task is oriented towards results that might respond to the parameters of academic rigour and the capacity for contextual analysis, as well as to considerations of experimentation and the creation of new languages, all the while reinforcing design’s innovative potential

Diseño de un modelo arquitectónico del procesador COFFEE mediante el software ArchC

The present work is aimed to provide the clearest description possible of the COFFEE RISC core model written through the ArchC software and simulate its behaviour. In this sense, we explore the software applications used for instruction set simulation focusing on the ArchC tools and their features. According to the guidelines of this software, a cycle-accurate description of the COFFEE core architecture is developed, which is used to synthesize a timed instruction set simulator and an assembler. Our work also contains some elements of analysis concerning the ArchC tools and the resulting instruction set simulator in order to evaluate their characteristics and capabilities for hardware architecture modeling purposes. We did not emphasize only on the features of the ArchC tools at the current status of development but also the projection of this software for future implementations. Despite the information gathered here is conceived to provide a basic knowledge about the COFFEE core and its ArchC model, the reader may notice that some issues are not explained enough. It needs to be understood that this thesis cannot cover every aspect of the architecture and the simulation software, which is what the official documentation is meant for. Our effort is focused on summarizing the most significant issues but not replace the official sources so we frequently suggest to consult them. _____________________________________________________El presente trabajo tiene como objetivo la descripción de un modelo del núcleo COFFEE por medio del software ArchC. Con este propósito son exploradas las aplicaciones informáticas utilizadas para la simulación de juegos de instrucciones, centrándonos en la herramienta de software ArchC y sus características. De acuerdo a las directrices de este software es desarrollada una descripción cycle-accurate de la arquitectura del núcleo COFFEE, la cual es utilizada para sintetizar un simulador del juego de instrucciones y un ensamblador. Asimismo son analizadas las herramientas incluidas con el software ArchC y el simulador del juego de instrucciones resultante con la intención de evaluar las capacidades y limitaciones de este software aplicado al modelado de arquitecturas hardware. Nuestro estudio no solo se centra en los aspectos de las herramientas software conforme a su estado actual de desarrollo si no también en su potencial y proyección, avanzando la descripción de futuras implementaciones.Ingeniería Industria

Design of an Architectural Model for the Coffee Processor Using ArchC

The present work is aimed to provide the clearest description possible of the COFFEE RISC core model written through the ArchC software and simulate its behaviour. In this sense, we explore the software applications used for instruction set simulation focusing on the ArchC tools and their features. According to the guidelines of this software, a cycle-accurate description of the COFFEE core architecture is developed, which is used to synthesize a timed instruction set simulator and an assembler. Our work also contains some elements of analysis concerning the ArchC tools and the resulting instruction set simulator in order to evaluate their characteristics and capabilities for hardware architecture modeling purposes. We did not emphasize only on the features of the ArchC tools at the current status of development but also the projection of this software for future implementations. /Kir1

Extending OpenMP to survive the heterogeneous multi-core era

This paper advances the state-of-the-art in programming models for exploiting task-level parallelism on heterogeneous many-core systems, presenting a number of extensions to the OpenMP language inspired in the StarSs programming model. The proposed extensions allow the programmer to write portable code easily for a number of different platforms, relieving him/her from developing the specific code to off-load tasks to the accelerators and the synchronization of tasks. Our results obtained from the StarSs instantiations for SMPs, theCell, and GPUs report reasonable parallel performance. However, the real impact of our approach in is the productivity gains it yields for the programmer.Postprint (published version

Revista iberoamericana de educación

Resumen basado en el de la publicaciónTítulo, resumen y palabras clave en español, inglés y portuguésMonográfico con el título: "Educación y pandemia: efectos y opciones de políticas en Iberoamérica"Se describe cómo los estudiantes y docentes mexicanos de Educación Media Superior se adaptan a la situación de emergencia sanitaria provocada por el COVID-19. Se recolectaron datos representativos de diferentes estados, instituciones públicas y privadas ubicadas en contextos urbanos y rurales mexicanos. Pedagógicamente, docentes y estudiantes han sido flexibles, al adaptar métodos presenciales combinando recursos digitales y tradicionales. Tecnológicamente, solo la mitad de los docentes reportan una adecuada conectividad a Internet, lo que limita el uso de los recursos digitales. Psicológicamente, se identifica una prevalencia de estados emocionales aflictivos y de estrés, dando lugar a un estado de bienestar socioemocional general vulnerable. Se revela la importancia de la evaluación del aprendizaje y el contacto con los estudiantes, tanto para el aprendizaje como para el bienestar socioemocional. Se permiten ver fortalezas y áreas de oportunidad para el Sistema Educativo Mexicano.ES

First narrow-band search for continuous gravitational waves from known pulsars in advanced detector data

International audienceSpinning neutron stars asymmetric with respect to their rotation axis are potential sources of continuous gravitational waves for ground-based interferometric detectors. In the case of known pulsars a fully coherent search, based on matched filtering, which uses the position and rotational parameters obtained from electromagnetic observations, can be carried out. Matched filtering maximizes the signal-to-noise (SNR) ratio, but a large sensitivity loss is expected in case of even a very small mismatch between the assumed and the true signal parameters. For this reason, narrow-band analysis methods have been developed, allowing a fully coherent search for gravitational waves from known pulsars over a fraction of a hertz and several spin-down values. In this paper we describe a narrow-band search of 11 pulsars using data from Advanced LIGO’s first observing run. Although we have found several initial outliers, further studies show no significant evidence for the presence of a gravitational wave signal. Finally, we have placed upper limits on the signal strain amplitude lower than the spin-down limit for 5 of the 11 targets over the bands searched; in the case of J1813-1749 the spin-down limit has been beaten for the first time. For an additional 3 targets, the median upper limit across the search bands is below the spin-down limit. This is the most sensitive narrow-band search for continuous gravitational waves carried out so far