{"id":18203,"date":"2024-04-05T06:00:22","date_gmt":"2024-04-05T06:00:22","guid":{"rendered":"https:\/\/www.techopedia.com\/es\/?post_type=definition&#038;p=18203"},"modified":"2024-04-05T07:26:23","modified_gmt":"2024-04-05T07:26:23","slug":"memoria-compartida","status":"publish","type":"definition","link":"https:\/\/www.techopedia.com\/es\/definicion\/memoria-compartida","title":{"rendered":"Memoria compartida"},"content":{"rendered":"<h2><span id=\"que_significa_memoria_compartida\">\u00bfQu\u00e9 significa memoria compartida?<\/span><\/h2>\n<p>La memoria compartida para software es un tipo de memoria que puede ser compartida por m\u00faltiples aplicaciones o procesos con la intenci\u00f3n de <strong>proporcionar comunicaci\u00f3n entre aplicaciones o evitar copias redundantes de <a href=\"https:\/\/www.techopedia.com\/es\/definicion\/tejido-datos\">datos<\/a><\/strong>. Es un medio eficiente de compartir o pasar datos porque elimina la necesidad de utilizar otros procesos como la entrada\/salida (E\/S). Una aplicaci\u00f3n guarda los datos en la memoria compartida, mientras que otra aplicaci\u00f3n puede utilizarlos cuando los encuentre.<\/p>\n<p>En el contexto de los <a href=\"https:\/\/www.techopedia.com\/es\/definicion\/procesador\">procesadores<\/a>, <strong>la memoria compartida es una parte de la memoria de acceso aleatorio (RAM)<\/strong> a la que pueden acceder todos los procesadores de un sistema multiprocesador.<\/p>\n<h3><span id=\"diccionario_techopedi_memoria_compartida\">Diccionario Techopedi: Memoria compartida<\/span><\/h3>\n<p>La memoria compartida para software es una <strong>forma de que diferentes programas se comuniquen y pasen datos sin m\u00e1s sobrecarga de los procesos de comunicaci\u00f3n.<\/strong> Con la memoria compartida, un programa escribe en la memoria compartida cualquier dato que necesite que otro programa reciba.<\/p>\n<p>Por ejemplo, si el Programa A quiere dar una lista al Programa B, guarda los datos en memoria compartida y los marca con un sem\u00e1foro u otro sistema de se\u00f1alizaci\u00f3n para indicar que est\u00e1 listo para ser le\u00eddo por el Programa B.<\/p>\n<p>Cuando el Programa B encuentra el fichero, comprueba el sem\u00e1foro para ver si se le permite tocar ese <a href=\"https:\/\/www.techopedia.com\/es\/definicion\/archivo\">fichero<\/a>. Si est\u00e1 permitido, entonces hace lo que tiene que hacer con el fichero, lo pone en memoria compartida o lo actualiza. Tambi\u00e9n actualiza el sem\u00e1foro, para que el Programa A sepa que debe tomar el archivo.<\/p>\n<p>En t\u00e9rminos de hardware, espec\u00edficamente microprocesadores, la memoria compartida es un gran bloque de RAM utilizado por m\u00faltiples procesadores. Es <strong>f\u00e1cil de programar porque todos los procesadores comparten la misma visi\u00f3n de los datos<\/strong>, lo que facilita una comunicaci\u00f3n m\u00e1s r\u00e1pida. Sin embargo, esto puede complicarse porque los procesadores almacenan la memoria en cach\u00e9 para un acceso m\u00e1s r\u00e1pido, lo que puede provocar problemas como la coherencia de la cach\u00e9.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00bfQu\u00e9 significa memoria compartida? La memoria compartida para software es un tipo de memoria que puede ser compartida por m\u00faltiples aplicaciones o procesos con la intenci\u00f3n de proporcionar comunicaci\u00f3n entre aplicaciones o evitar copias redundantes de datos. Es un medio eficiente de compartir o pasar datos porque elimina la necesidad de utilizar otros procesos como [&hellip;]<\/p>\n","protected":false},"author":7813,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"definitioncat":[331],"class_list":["post-18203","definition","type-definition","status-publish","format-standard","hentry","definitioncat-hardware"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.8 (Yoast SEO v23.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u00bfQu\u00e9 es la memoria compartida? 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