{"id":91219,"date":"2018-03-11T10:09:53","date_gmt":"2018-03-11T10:09:53","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/high-performance-architectures-for-high-radix-switches\/"},"modified":"2018-03-11T10:09:53","modified_gmt":"2018-03-11T10:09:53","slug":"high-performance-architectures-for-high-radix-switches","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/tecnologia-de-los-ordenadores\/high-performance-architectures-for-high-radix-switches\/","title":{"rendered":"High-performance architectures for high-radix switches."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Gaspar Mora Porta <\/strong><\/h2>\n<p>Para beneficiarse de una reducci\u00f3n en la latencia as\u00ed como disminuir tanto el consumo como el coste, el n\u00famero \u00f3ptimo de puertos de un conmutador ha ido aumentando a lo largo del tiempo. Sin embargo, las arquitecturas tradicionales se han quedado atr\u00e1s bien por bajo rendimiento o bien por problemas de escalabilidad con el n\u00famero de puertos.  en esta tesis se propone una nueva arquitectura de conmutador v\u00e1lida para conmutadores de elevado grado llamada partitioned crossbar input queued (pciq). Esta arquitectura resuelve el problema de los excesivos requerimientos de memoria en el dise\u00f1o de arquitecturas de elevado grado. Adem\u00e1s pciq define una nueva familia de arquitecturas de conmutador.  pciq se basa en un particionado inteligente del crossbar, dividi\u00e9ndolo en sub-crossbars, requiriendo menos recursos de memoria que las otras propuestas para conmutadores de elevado grado y que consigue una mayor eficiencia debido en parte a un incremento en la eficiencia de los \u00e1rbitros empleados en el dise\u00f1o. En este sentido, pciq emplea dos \u00e1rbitros con prioridad rotativa (uno para cada sub-crossbar) que presentan un coste lineal y una respuesta en el tiempo logar\u00edtmica conforme aumenta el n\u00famero de puertos del conmutador. Adem\u00e1s pciq tiene un coste (medido en t\u00e9rminos de requerimientos de memoria, complejidad del crossbar y complejidad en el arbitraje) similar o incluso menor que organizaciones b\u00e1sicas como cioq. No obstante pciq es capaz de conseguir m\u00e1xima eficiencia para distribuciones de tr\u00e1fico uniforme.  el bloqueo por paquete al principio de cola (o hol en ingl\u00e9s) reduce dram\u00e1ticamente el rendimiento del conmutador. Las soluciones tradicionales para eliminar el bloqueo por hol no son escalables con el n\u00famero de puertos o requieren arquitecturas complejas. En esta tesis se propone una t\u00e9cnica de control de la congesti\u00f3n que elimina el bloqueo por hol llamada recn-iq. Recn-iq est\u00e1 dise\u00f1ada para conmutadores con memorias s\u00f3lo a la entrada y es una t\u00e9cnica altamente eficiente<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>High-performance architectures for high-radix switches.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 High-performance architectures for high-radix switches. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Gaspar Mora Porta <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 16\/01\/2009<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Jos\u00e9 Flich Cardo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Antonio Gonzalez colas <\/li>\n<li>donglai Dai (vocal)<\/li>\n<li>shashi Kumar (vocal)<\/li>\n<li>Francisco Jos\u00e9 Alfaro cortes (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Gaspar Mora Porta Para beneficiarse de una reducci\u00f3n en la latencia as\u00ed como disminuir tanto el consumo [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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