{"id":1740,"date":"2021-10-06T13:03:28","date_gmt":"2021-10-06T11:03:28","guid":{"rendered":"http:\/\/calculs.univ-cotedazur.fr\/?page_id=1740"},"modified":"2021-10-06T13:27:40","modified_gmt":"2021-10-06T11:27:40","slug":"pourquoi-utiliser-un-cluster-de-calcul","status":"publish","type":"page","link":"https:\/\/calculs.univ-cotedazur.fr\/?page_id=1740","title":{"rendered":"Pourquoi utiliser un cluster de calcul ?"},"content":{"rendered":"\n<p>De nombreux probl\u00e8mes scientifiques ne peuvent pas \u00eatre \u00e9tudi\u00e9s sur un ordinateur classique : <\/p>\n\n\n\n<ul><li>pas assez de m\u00e9moire<\/li><li>pas assez d&rsquo;espace disque<\/li><li>pas assez de puissance de calcul<\/li><\/ul>\n\n\n\n<p>Cela prendrait des ann\u00e9es pour ex\u00e9cuter certains programmes.<\/p>\n\n\n\n<p>Un cluster fournit du mat\u00e9riel haute performance, un d\u00e9bit tr\u00e8s \u00e9lev\u00e9 et une latence tr\u00e8s faible. <\/p>\n\n\n\n<p>\u00c0 l&rsquo;int\u00e9rieur d&rsquo;un cluster, les ordinateurs (\u00e9galement appel\u00e9s \u00ab n\u0153uds \u00bb) sont connect\u00e9s les uns aux autres. Chaque n\u0153ud embarque plusieurs c\u0153urs CPU. Un c\u0153ur ex\u00e9cute des instructions. Un programme peut fonctionner sur un c\u0153ur (mode s\u00e9quentiel) ou plusieurs c\u0153urs (mode parall\u00e8le ou distribu\u00e9). <\/p>\n\n\n\n<p>Bien que tous les jobs (instructions) ne puissent pas \u00eatre parall\u00e9lis\u00e9s, un programme s&rsquo;ex\u00e9cutera beaucoup plus rapidement si plusieurs t\u00e2ches peuvent \u00eatre effectu\u00e9es en m\u00eame temps.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>De nombreux probl\u00e8mes scientifiques ne peuvent pas \u00eatre \u00e9tudi\u00e9s sur un ordinateur classique : pas assez de m\u00e9moire pas assez d&rsquo;espace disque pas assez de puissance de calcul Cela prendrait des ann\u00e9es pour ex\u00e9cuter certains programmes. Un cluster fournit du &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"parent":140,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/pages\/1740"}],"collection":[{"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1740"}],"version-history":[{"count":4,"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/pages\/1740\/revisions"}],"predecessor-version":[{"id":1753,"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/pages\/1740\/revisions\/1753"}],"up":[{"embeddable":true,"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/pages\/140"}],"wp:attachment":[{"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}