{"id":753,"date":"2009-04-27T18:13:32","date_gmt":"2009-04-27T18:13:32","guid":{"rendered":"http:\/\/spinor.info\/weblog\/?p=753"},"modified":"2009-04-27T18:13:32","modified_gmt":"2009-04-27T18:13:32","slug":"parallel-processing","status":"publish","type":"post","link":"https:\/\/spinor.info\/weblog\/?p=753","title":{"rendered":"Parallel processing"},"content":{"rendered":"<p>I&#8217;ve run the first realistic tests of the kind of computation that I am planning to perform on my new machine with the GPU &#8220;supercomputer&#8221; card. Here is a &#8220;before&#8221; picture:<\/p>\n<div id=\"attachment_754\" style=\"width: 506px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-754\" class=\"size-full wp-image-754\" title=\"Self-gravitating star cluster on the CPU\" src=\"http:\/\/spinor.info\/weblog\/wp-content\/uploads\/2009\/04\/stars1.gif\" alt=\"Self-gravitating star cluster on the CPU\" width=\"496\" height=\"361\" srcset=\"https:\/\/spinor.info\/weblog\/wp-content\/uploads\/2009\/04\/stars1.gif 496w, https:\/\/spinor.info\/weblog\/wp-content\/uploads\/2009\/04\/stars1-300x218.gif 300w\" sizes=\"(max-width: 496px) 100vw, 496px\" \/><p id=\"caption-attachment-754\" class=\"wp-caption-text\">Self-gravitating star cluster on the CPU<\/p><\/div>\n<p>And now, the exact same program running on the GPU:<\/p>\n<div id=\"attachment_755\" style=\"width: 506px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-755\" class=\"size-full wp-image-755\" title=\"Self-gravitating star cluster on the GPU\" src=\"http:\/\/spinor.info\/weblog\/wp-content\/uploads\/2009\/04\/stars2.gif\" alt=\"Self-gravitating star cluster on the GPU\" width=\"496\" height=\"361\" srcset=\"https:\/\/spinor.info\/weblog\/wp-content\/uploads\/2009\/04\/stars2.gif 496w, https:\/\/spinor.info\/weblog\/wp-content\/uploads\/2009\/04\/stars2-300x218.gif 300w\" sizes=\"(max-width: 496px) 100vw, 496px\" \/><p id=\"caption-attachment-755\" class=\"wp-caption-text\">Self-gravitating star cluster on the GPU<\/p><\/div>\n<p>I&#8217;d say that&#8217;s quite an improvement. To say the least.<\/p>\n<p>The calculation in this case computed the self-gravitational forces in a cluster of 10,000 stars&#8230; it seems that the GPU can perform this computation at least 20 times a second. That&#8217;s quite remarkable.<\/p>\n<fb:like href='https:\/\/spinor.info\/weblog\/?p=753' send='false' layout='button_count' show_faces='true' width='450' height='65' action='like' colorscheme='light' font='lucida grande'><\/fb:like>","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve run the first realistic tests of the kind of computation that I am planning to perform on my new machine with the GPU &#8220;supercomputer&#8221; card. Here is a &#8220;before&#8221; picture: And now, the exact same program running on the GPU: I&#8217;d say that&#8217;s quite an improvement. To say the least. The calculation in this <a href='https:\/\/spinor.info\/weblog\/?p=753' class='excerpt-more'>[&#8230;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,3],"tags":[],"class_list":["post-753","post","type-post","status-publish","format-standard","hentry","category-computers","category-physics","category-11-id","category-3-id","post-seq-1","post-parity-odd","meta-position-corners","fix"],"_links":{"self":[{"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/posts\/753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=753"}],"version-history":[{"count":2,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/posts\/753\/revisions"}],"predecessor-version":[{"id":757,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/posts\/753\/revisions\/757"}],"wp:attachment":[{"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}