{"id":853,"date":"2013-03-19T15:34:02","date_gmt":"2013-03-19T13:34:02","guid":{"rendered":"http:\/\/oldblogs.uct.ac.za\/blog\/big-bytes\/2013\/03\/19\/comparing-apples-and-spark-plugs"},"modified":"2022-09-26T20:27:59","modified_gmt":"2022-09-26T18:27:59","slug":"comparing-apples-and-spark-plugs","status":"publish","type":"post","link":"https:\/\/ucthpc.uct.ac.za\/index.php\/2013\/03\/19\/comparing-apples-and-spark-plugs\/","title":{"rendered":"Comparing apples and spark plugs"},"content":{"rendered":"<div>There is no definitive correlation\u00a0between CPU utilization and RAM when looking at diverse science applications. \u00a0The top usage combination of CPU and RAM is a computational biology application focusing on nucleic acid folding. \u00a0The computer science application requiring CPU hours is NAMD, a molecular modelling package. \u00a0The Mecheng application requiring RAM is Ansys FLUENT.<\/div>\r\n<div><img src=\"https:\/\/ucthpc.uct.ac.za\/wp-content\/uploads\/2015\/07\/radar.png\" alt=\"radar\" border=\"0\" \/><\/div>\r\n<div>We've deliberately removed the axes data from the graph as the values were changed by several orders of magnitude to display the graphs clearly. \u00a0While this is not of much immediate use it supports our current plan of splitting our cluster hardware in two, one cluster providing powerful CPUs, the other providing large amounts of (very expensive) RAM.<\/div>","protected":false},"excerpt":{"rendered":"<div>There is no definitive correlation&nbsp;between CPU utilization and RAM when looking at diverse science applications. &nbsp;The top usage combination of CPU and RAM is a computational biology application focusing on nucleic acid folding. &nbsp;The computer science application requiring CPU hours is NAMD, a molecular modelling package. &nbsp;The Mecheng application requiring RAM is Ansys FLUENT.<\/div>\n<div><img decoding=\"async\" src=\"http:\/\/blogs.uct.ac.za\/gallery\/1253\/radar.png\" border=\"0\" alt=\"radar\"><\/div>\n<div>We&#8217;ve deliberately removed the axes data from the graph as the values were changed by several orders of magnitude to display the graphs clearly. &nbsp;While this is not of much immediate use it supports our current plan of splitting our cluster hardware in two, one cluster providing powerful CPUs, the other providing large amounts of (very expensive) RAM.<\/div>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[9,4],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Comparing apples and spark plugs - 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\/2013\/03\/19\/comparing-apples-and-spark-plugs\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comparing apples and spark plugs - UCT HPC\" \/>\n<meta property=\"og:description\" content=\"There is no definitive correlation&nbsp;between CPU utilization and RAM when looking at diverse science applications. &nbsp;The top usage combination of CPU and RAM is a computational biology application focusing on nucleic acid folding. &nbsp;The computer science application requiring CPU hours is NAMD, a molecular modelling package. &nbsp;The Mecheng application requiring RAM is Ansys FLUENT.We&#039;ve deliberately removed the axes data from the graph as the values were changed by several orders of magnitude to display the graphs clearly. &nbsp;While this is not of much immediate use it supports our current plan of splitting our cluster hardware in two, one cluster providing powerful CPUs, the other providing large amounts of (very expensive) RAM.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ucthpc.uct.ac.za\/index.php\/2013\/03\/19\/comparing-apples-and-spark-plugs\/\" \/>\n<meta property=\"og:site_name\" content=\"UCT HPC\" \/>\n<meta property=\"article:published_time\" content=\"2013-03-19T13:34:02+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-09-26T18:27:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ucthpc.uct.ac.za\/wp-content\/uploads\/2015\/07\/radar.png\" \/>\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\/2013\/03\/19\/comparing-apples-and-spark-plugs\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/ucthpc.uct.ac.za\/index.php\/2013\/03\/19\/comparing-apples-and-spark-plugs\/\"},\"author\":{\"name\":\"Andrew Lewis\",\"@id\":\"https:\/\/ucthpc.uct.ac.za\/#\/schema\/person\/c183ad1c0a1063124a72d63963ae9c7e\"},\"headline\":\"Comparing apples and spark plugs\",\"datePublished\":\"2013-03-19T13:34:02+00:00\",\"dateModified\":\"2022-09-26T18:27:59+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/ucthpc.uct.ac.za\/index.php\/2013\/03\/19\/comparing-apples-and-spark-plugs\/\"},\"wordCount\":118,\"publisher\":{\"@id\":\"https:\/\/ucthpc.uct.ac.za\/#organization\"},\"articleSection\":[\"application\",\"hpc\"],\"inLanguage\":\"en-ZA\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/ucthpc.uct.ac.za\/index.php\/2013\/03\/19\/comparing-apples-and-spark-plugs\/\",\"url\":\"https:\/\/ucthpc.uct.ac.za\/index.php\/2013\/03\/19\/comparing-apples-and-spark-plugs\/\",\"name\":\"Comparing apples and spark plugs - 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