The synergy of multithreading and access/execute decoupling

This work presents and evaluates a novel processor microarchitecture which combines two paradigms: access/execute decoupling and simultaneous multithreading. We investigate how both techniques complement each other: while decoupling features an excellent memory latency hiding efficiency, multithreading supplies the in-order issue stage with enough ILP to hide the functional unit latencies. Its partitioned layout, together with its in-order issue policy makes it potentially less complex, in terms of critical path delays, than a centralized out-of-order design, to support future growths in issue-width and clock speed. The simulations show that by adding decoupling to a multithreaded architecture, its miss latency tolerance is sharply increased and in addition, it needs fewer threads to achieve maximum throughput, especially for a large miss latency. Fewer threads result in a hardware complexity reduction and lower demands on the memory system, which becomes a critical resource for large miss latencies, since bandwidth may become a bottleneck.Peer ReviewedPostprint (published version

Modernización conservadora y privatización en la educación : el caso de la LOMCE y la Nueva Gestión Pública

Las políticas de privatización educativa se han convertido en un fenómeno global. En España, el partido conservador ha promovido una modernización conservadora en la educación mediante la Ley Orgánica de Mejora de la Calidad Educativa (LOMCE). Esta reforma ha introducido políticas de privatización endógena inspiradas en la Nueva Gestión Pública (NGP), como por ejemplo, la autonomía escolar, la rendición de cuentas y la profesionalización de la dirección escolar. El presente artículo tiene dos objetivos. En primer lugar pretende revisar la literatura existente sobre el uso de la evidencia de la OCDE y PISA en la adopción de la LOMCE y en la construcción del discurso político en educación. En segundo lugar, trata de desempaquetar y discutir algunos de los principios y contenidos de la ley y sus potenciales efectos. La ley y otros documentos oficiales del Ministerio de Educación, notas de prensa, y artículos académicos han sido revisados.Education privatization policies have become a global phenomenon. In Spain, the Conservative Party has promoted a conservative modernization in education through the so-called "Law for Improving Educational Quality" (LOMCE). This reform has introduced endogenous privatization policies inspired by New Public Management (NPM), such as school autonomy, accountability and the professionalization of school principals. The purpose of this article is two-fold. Firstly, it aims to review the existing literature on the use of evidence from the OECD and PISA in the adoption of LOMCE and in the construction of political discourse in education. Secondly, it tries to unpack and discuss some of the principles and contents of the law and its potential effects. The content of the law and other official documents of the Ministry of Education, press releases, and academic papers have been reviewed

Improving latency tolerance of multithreading through decoupling

The increasing hardware complexity of dynamically scheduled superscalar processors may compromise the scalability of this organization to make an efficient use of future increases in transistor budget. SMT processors, designed over a superscalar core, are therefore directly concerned by this problem. The article presents and evaluates a novel processor microarchitecture which combines two paradigms: simultaneous multithreading and access/execute decoupling. Since its decoupled units issue instructions in order, this architecture is significantly less complex, in terms of critical path delays, than a centralized out-of-order design, and it is more effective for future growth in issue-width and clock speed. We investigate how both techniques complement each other. Since decoupling features an excellent memory latency hiding efficiency, the large amount of parallelism exploited by multithreading may be used to hide the latency of functional units and keep them fully utilized. The study shows that, by adding decoupling to a multithreaded architecture, fewer threads are needed to achieve maximum throughput. Therefore, in addition to the obvious hardware complexity reduction, it places lower demands on the memory system. The study also reveals that multithreading by itself exhibits little memory latency tolerance. Results suggest that most of the latency hiding effectiveness of SMT architectures comes from the dynamic scheduling. On the other hand, decoupling is very effective at hiding memory latency. An increase in the cache miss penalty from 1 to 32 cycles reduces the performance of a 4-context multithreaded decoupled processor by less than 2 percent. For the nondecoupled multithreaded processor, the loss of performance is about 23 percent.Peer ReviewedPostprint (published version

Conservative modernisation and privatisation in education: The case of LOMCE and the new public management

Las políticas de privatización educativa se han convertido en un fenómeno global. En España, el partido conservador ha promovido una modernización conservadora en la educación mediante la Ley Orgánica de Mejora de la Calidad Educativa (LOMCE). Esta reforma ha introducido políticas de privatización endógena inspiradas en la Nueva Gestión Pública (NGP), como por ejemplo, la autonomía escolar, la rendición de cuentas y la profesionalización de la dirección escolar. El presente artículo tiene dos objetivos. En primer lugar pretende revisar la literatura existente sobre el uso de la evidencia de la OCDE y PISA en la adopción de la LOMCE y en la construcción del discurso político en educación. En segundo lugar, trata de desempaquetar y discutir algunos de los principios y contenidos de la ley y sus potenciales efectos. La ley y otros documentos oficiales del Ministerio de Educación, notas de prensa, y artículos académicos han sido revisadosEducation privatization policies have become a global phenomenon. In Spain, the Conservative Party has promoted a conservative modernization in education through the so-called “Law for Improving Educational Quality” (LOMCE). This reform has introduced endogenous privatization policies inspired by New Public Management (NPM), such as school autonomy, accountability and the professionalization of school principals. The purpose of this article is two-fold. Firstly, it aims to review the existing literature on the use of evidence from the OECD and PISA in the adoption of LOMCE and in the construction of political discourse in education. Secondly, it tries to unpack and discuss some of the principles and contents of the law and its potential effects. The content of the law and other official documents of the Ministry of Education, press releases, and academic papers have been reviewe

Just by making one new street...

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Medellín diary

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Prólogo

El Congreso Internacional de Docencia Universitaria e Innovación (CIDUI) es una iniciativa de las universidades públicas de la comunidad autónoma de Cataluña (España) que se celebra cada dos años. La octava edición se realizó en julio de 2014. El CIDUI (http://www.cidui.org) se dirige a todos los profesionales universitarios involucrados en la innovación y la mejora de la calidad docente, tanto a profesorado como a profesionales técnicos y de la gestión. En sus últimas ediciones ha tenido una participación media de unas 800 personas y se han presentado, de media, unas 500 comunicaciones

Just by making one new street...

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