{"id":1194,"date":"2012-03-27T14:16:10","date_gmt":"2012-03-27T18:16:10","guid":{"rendered":"http:\/\/antipaucity.com\/?p=1194"},"modified":"2012-03-27T14:16:10","modified_gmt":"2012-03-27T18:16:10","slug":"not-enough-cpus","status":"publish","type":"post","link":"https:\/\/merikebi.warrenmyers.com\/?p=1194","title":{"rendered":"not enough cpus"},"content":{"rendered":"<p>I found an interesting <a href=\"http:\/\/cateee.net\/lkddb\/web-lkddb\/NR_CPUS.html\">reference<\/a> that indicates that for x86, the maximum number of CPUs the Linux kernel can handle is 255. I&#8217;d presume that it&#8217;s the same for Windows.<\/p>\n<p>I&#8217;m curious &#8211; right now this is a rather large limit: but it won&#8217;t be for long! 16 core CPUs are available from <a href=\"http:\/\/arstechnica.com\/business\/news\/2011\/11\/amds-16-core-bulldozer-pushes-into-the-server-room.ars\">AMD<\/a>\u00a0today. I see <a href=\"http:\/\/www.newegg.com\/Product\/Product.aspx?Item=N82E16813151219\">motherboards <\/a>that will support 4 sockets (there may be some that go higher). That&#8217;s a total of 64 CPUs visible to the OS.<\/p>\n<p>With AMD and Intel pushing the number of cores ever higher, how soon will we hit the practical limits of the x86-64 architecture &#8211; or is the limit of 255 <em>not<\/em>\u00a0a &#8220;core&#8221; limitation of the architecture?<\/p>\n<p>I&#8217;m curious to find this out &#8211; and to see how vendors will handle these upcoming limitations.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I found an interesting reference that indicates that for x86, the maximum number of CPUs the Linux kernel can handle is 255. I&#8217;d presume that it&#8217;s the same for Windows. I&#8217;m curious &#8211; right now this is a rather large limit: but it won&#8217;t be for long! 16 core CPUs are available from AMD\u00a0today. I &hellip;<br \/><a href=\"https:\/\/merikebi.warrenmyers.com\/?p=1194\" class=\"more-link pen_button pen_element_default pen_icon_arrow_double\">Continue reading <span class=\"screen-reader-text\">not enough cpus<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[41],"tags":[450,865,866],"keyring_services":[],"class_list":["post-1194","post","type-post","status-publish","format-standard","hentry","category-technical","tag-linux","tag-x84-64","tag-x86"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/merikebi.warrenmyers.com\/index.php?rest_route=\/wp\/v2\/posts\/1194","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/merikebi.warrenmyers.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/merikebi.warrenmyers.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/merikebi.warrenmyers.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/merikebi.warrenmyers.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1194"}],"version-history":[{"count":0,"href":"https:\/\/merikebi.warrenmyers.com\/index.php?rest_route=\/wp\/v2\/posts\/1194\/revisions"}],"wp:attachment":[{"href":"https:\/\/merikebi.warrenmyers.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/merikebi.warrenmyers.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1194"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/merikebi.warrenmyers.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1194"},{"taxonomy":"keyring_services","embeddable":true,"href":"https:\/\/merikebi.warrenmyers.com\/index.php?rest_route=%2Fwp%2Fv2%2Fkeyring_services&post=1194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}