{"id":825,"date":"2018-09-20T00:33:40","date_gmt":"2018-09-19T15:33:40","guid":{"rendered":"http:\/\/www.jmlab.jp\/?p=825"},"modified":"2018-09-20T00:34:01","modified_gmt":"2018-09-19T15:34:01","slug":"10-5-r-ccs-cafe","status":"publish","type":"post","link":"https:\/\/jmlab.jp\/wordpress\/?p=825","title":{"rendered":"10\/5 R-CCS Cafe"},"content":{"rendered":"<p>10\/5\u306e <a href=http:\/\/www.r-ccs.riken.jp\/jp\/outreach\/r-ccscafe\/>R-CCS Cafe<\/a> \u3067\u7267\u91ce\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8a71\u3092\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002\u8208\u5473\u304c\u3042\u308b\u65b9\u306f\u3069\u3046\u305e\u3002<\/p>\n<p>Title:<br \/>\nToward a Science of HPC software (and hardware)<\/p>\n<p>Abstract:<\/p>\n<p>In the last three decades, it has been becoming more and more<br \/>\ndifficult to achieve high, or even modest efficiency on advanced HPC<br \/>\nsystems. As everybody here in R-CCS knows, the development of highly<br \/>\nefficient and highly scalable software for modern HPC systems like K<br \/>\nor Post-K requires multi-year effort of a team of exceptionally good<br \/>\nresearchers. Of course, many other HPC systems are even harder to use.<br \/>\nOur particle simulator research team has been working on a new<br \/>\napproach to solve this problem through the use of framework. Our FDPS<br \/>\nframework allows the users to write their programs in the way very<br \/>\nclose to the way they would write them for a single-processor machine,<br \/>\nand run them on large-scale parallel systems with very high<br \/>\nefficiency. The guiding principle for the design of FDPS is to<br \/>\nminimize inter-node communication and main memory access per timestep,<br \/>\nwithout increasing the floating-point operations too much. I will<br \/>\ndiscuss current state of FDPS and also our framework for stencil<br \/>\ncalculation, Formura. If time allows, I&#8217;ll discuss how hardware design<br \/>\nshould be changed to achieve better efficiency, not just that relative to<br \/>\npeak but the power efficiency which is far more important.<\/p>\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>10\/5\u306e R-CCS Cafe \u3067\u7267\u91ce\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8a71\u3092\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002\u8208\u5473\u304c\u3042\u308b\u65b9\u306f\u3069\u3046\u305e\u3002 Title: Toward a Science of HPC software (and hardware) Abst&#8230;<a href=\"https:\/\/jmlab.jp\/wordpress\/?p=825\">\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-825","post","type-post","status-publish","format-standard","hentry","category-5"],"_links":{"self":[{"href":"https:\/\/jmlab.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/825","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jmlab.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jmlab.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jmlab.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jmlab.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=825"}],"version-history":[{"count":2,"href":"https:\/\/jmlab.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/825\/revisions"}],"predecessor-version":[{"id":827,"href":"https:\/\/jmlab.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/825\/revisions\/827"}],"wp:attachment":[{"href":"https:\/\/jmlab.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=825"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jmlab.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=825"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jmlab.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}