{"id":2006,"date":"2015-08-14T09:50:25","date_gmt":"2015-08-14T07:50:25","guid":{"rendered":"http:\/\/srvcnthpc001.uct.ac.za\/?p=2006"},"modified":"2015-08-14T12:16:35","modified_gmt":"2015-08-14T10:16:35","slug":"high-memory-nodes","status":"publish","type":"post","link":"https:\/\/ucthpc.uct.ac.za\/index.php\/2015\/08\/14\/high-memory-nodes\/","title":{"rendered":"High Memory Nodes"},"content":{"rendered":"

We have installed two high memory DELL R820 servers into the 800 series. \"R620\"
\nEach server has four\u00a0sockets with six\u00a0cores of 2.4GHz each. There are also thirty two 32GB DIMMS making up 1TB of RAM, although these memory chips are only 1066MHz. \u00a0Access to these servers will be granted only if researchers can demonstrate a specific need for large amounts of RAM.
\nBelow is the LINPACK test on one of these servers:<\/p>\n

Performance Summary (GFlops)\r\n\r\nSize   LDA    Align.  Average  Maximal\r\n1000   1000   4       34.7709  39.3734\r\n2000   2000   4       166.7356 171.7181\r\n5000   5008   4       250.4138 253.7283\r\n10000  10000  4       328.0672 329.2398\r\n15000  15000  4       365.0112 365.5601\r\n18000  18008  4       364.3244 364.3453\r\n20000  20016  4       359.0576 359.3760\r\n22000  22008  4       361.1715 361.1797\r\n25000  25000  4       373.1793 373.6518\r\n26000  26000  4       380.6259 380.6809\r\n27000  27000  4       381.6859 381.6859\r\n30000  30000  1       391.6614 391.6614\r\n35000  35000  1       393.0516 393.0516\r\n40000  40000  1       428.8028 428.8028\r\n45000  45000  1       426.5461 426.5461\r\n<\/pre>\n
\"wattsfr\"The\u00a0power consumption during the test peaked at 280W which gives an average of 1.52GF\/W, which is fairly efficient.<\/a> If we could sustain this throughout our cluster this would place us at roughly number 112 on the current Green500 list.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
We have installed two high memory DELL R820 servers into the 800 series. Each server has four\u00a0sockets with six\u00a0cores of 2.4GHz each. There are also thirty two 32GB DIMMS making up 1TB of RAM, although these memory chips are only 1066MHz. \u00a0Access to these servers will be granted only if researchers can demonstrate a specific…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6,4,20],"tags":[],"yoast_head":"\nHigh Memory Nodes - UCT HPC<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ucthpc.uct.ac.za\/index.php\/2015\/08\/14\/high-memory-nodes\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"High Memory Nodes - UCT HPC\" \/>\n<meta property=\"og:description\" content=\"We have installed two high memory DELL R820 servers into the 800 series. Each server has four\u00a0sockets with six\u00a0cores of 2.4GHz each. There are also thirty two 32GB DIMMS making up 1TB of RAM, although these memory chips are only 1066MHz. \u00a0Access to these servers will be granted only if researchers can demonstrate a specific...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ucthpc.uct.ac.za\/index.php\/2015\/08\/14\/high-memory-nodes\/\" \/>\n<meta property=\"og:site_name\" content=\"UCT HPC\" \/>\n<meta property=\"article:published_time\" content=\"2015-08-14T07:50:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-08-14T10:16:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ucthpc.uct.ac.za\/wp-content\/uploads\/2015\/08\/R620.jpg\" \/>\n<meta name=\"author\" content=\"Andrew Lewis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Andrew Lewis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/ucthpc.uct.ac.za\/index.php\/2015\/08\/14\/high-memory-nodes\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/ucthpc.uct.ac.za\/index.php\/2015\/08\/14\/high-memory-nodes\/\"},\"author\":{\"name\":\"Andrew Lewis\",\"@id\":\"https:\/\/ucthpc.uct.ac.za\/#\/schema\/person\/c183ad1c0a1063124a72d63963ae9c7e\"},\"headline\":\"High Memory Nodes\",\"datePublished\":\"2015-08-14T07:50:25+00:00\",\"dateModified\":\"2015-08-14T10:16:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/ucthpc.uct.ac.za\/index.php\/2015\/08\/14\/high-memory-nodes\/\"},\"wordCount\":115,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/ucthpc.uct.ac.za\/#organization\"},\"articleSection\":[\"hardware\",\"hpc\",\"Memory\"],\"inLanguage\":\"en-ZA\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/ucthpc.uct.ac.za\/index.php\/2015\/08\/14\/high-memory-nodes\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/ucthpc.uct.ac.za\/index.php\/2015\/08\/14\/high-memory-nodes\/\",\"url\":\"https:\/\/ucthpc.uct.ac.za\/index.php\/2015\/08\/14\/high-memory-nodes\/\",\"name\":\"High Memory Nodes - 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