{"id":160736,"date":"2021-07-27T14:25:08","date_gmt":"2021-07-27T14:25:08","guid":{"rendered":"\/forum\/forums\/topic\/mysterious-high-cpu-usage-in-hpc-cluster\/"},"modified":"2021-07-29T16:47:04","modified_gmt":"2021-07-29T16:47:04","slug":"mysterious-high-cpu-usage-in-hpc-cluster","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mysterious-high-cpu-usage-in-hpc-cluster\/","title":{"rendered":"mysterious high CPU usage in HPC cluster"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hi,<\/p>\n<p>This is LES simulation of coal combustion, by species model, Discrete phase model, DO radiation; the particle number reaches up to 50 million;<\/p>\n<p>using 2021R1, automatic Metis partitioning, single precision;<\/p>\n<p>using two udf file to define coal properties wsg for radiation and define ash volume after coal burnout.<\/p>\n<p><\/p>\n<\/p>\n<p>I use 120 processors to run this case by issuing command<\/p>\n<p>\/project\/research\/ansys\/reserve_fluent.sh 120&nbsp;<\/p>\n<p>\/project\/research\/ansys21\/fluent21 3d -t120 -cnf=\/home\/research\/username\/fluenthosts.88888 -pib.ofed -gui_machine=chernobyl.engr.wustl.edu&nbsp;<\/p>\n<p>I issue these commands in VNC session using one processor. the system is <\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"\/forum\/wp-content\/uploads\/forum-uploads\/001\/B3LUFWX72LM1.png\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/001\/B3LUFWX72LM1.png\" alt=\"image.png\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-160736","topic","type-topic","status-closed","hentry","topic-tag-combustion","topic-tag-fluent","topic-tag-hpc","topic-tag-kill-1","topic-tag-processors"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_view_count":["236"],"_bbp_likes_count":["0","0"],"_bbp_forum_subforum_count":["0"],"_btv_view_count":["864"],"_bbp_subscription":["251458"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["160736"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","22555","177306"],"_bbp_voice_count":["3"],"_bbp_reply_count":["15"],"_bbp_last_reply_id":["186846"],"_bbp_last_active_id":["186846"],"_bbp_last_active_time":["2021-07-29 16:47:04"]},"test":"lei2019"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/160736","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/160736\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=160736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}