{"id":55273,"date":"2017-10-25T16:15:38","date_gmt":"2017-10-25T16:15:38","guid":{"rendered":"\/forum\/forums\/reply\/55273\/"},"modified":"2017-10-25T16:15:38","modified_gmt":"2017-10-25T16:15:38","slug":"55273","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55273\/","title":{"rendered":"Reply To: utilize more than one logical cpu"},"content":{"rendered":"<p>First click on the Physics block, then under Physics Solution click the Solver Options link, then select Launch Controls 1.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/3e825b35-df61-45f5-9693-a81101684b62\/4ff2df75-3e0a-442b-90a7-a817010beadb_aim-18.1-launch-controls-number-of-processors.jpg?width=690&amp;upscale=false\" alt=\"asdf\"><\/p>\n<p><\/p>\n<p>I have a 4-core laptop that&nbsp;is configured for hyperthreading which allows two threads&nbsp;per core, so the Task Manager Performance tab shows 8 CPUs. You should only type in 4 not 8 for the number of processors in this example. ANSYS will only reach about 50% utilization on the Task Manager Performance tab as it uses &#8220;real&#8221; cores, not threads.<\/p>\n<p><\/p>\n<p>The default is 2 processors, so if you have a 4-core computer with hyperthreading turned on, you would expect to see an average of 25% usage on the Task Manager while the solver is running on 2 cores.<\/p>\n<p><\/p>\n<p>I&nbsp;also have a 16-core desktop where I disabled hyperthreading (per ANSYS recommendations) and I can see 100% utilization on the Task Manager when ANSYS is running and I let it use all 16 cores.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/3e825b35-df61-45f5-9693-a81101684b62\/268b8579-8e67-4524-99a4-a817011eb57c_16-cores.jpg?width=690&amp;upscale=false\" alt=\"100%\"><\/p>\n<p><\/p>\n<p>When I am using ANSYS Mechanical rather than AIM, I can see if the solver is running in RAM only (incore) or needs to use the disk (out-of-core) because the solver estimated that it could not run in RAM only. When I see the solver is running out-of-core, I might choose to stop the solution and reduce the mesh density to try to get an incore solution, which will take less time to solve. I don&#8217;t think AIM has that degree of visibility on how it is solving, but since it uses the same solver, I assume it tries to solve in RAM if possible.<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-55273","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"First click on the Physics block, then under Physics Solution click the Solver Options link, then select Launch Controls 1. I have a 4-core laptop that is configured for hyperthreading which allows two threads per core, so the Task Manager Performance tab shows 8 CPUs. You should only type in 4 not 8 for the number of\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55273\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: utilize more than one logical cpu | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"First click on the Physics block, then under Physics Solution click the Solver Options link, then select Launch Controls 1. I have a 4-core laptop that is configured for hyperthreading which allows two threads per core, so the Task Manager Performance tab shows 8 CPUs. You should only type in 4 not 8 for the number of\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55273\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/3e825b35-df61-45f5-9693-a81101684b62\/4ff2df75-3e0a-442b-90a7-a817010beadb_aim-18.1-launch-controls-number-of-processors.jpg?width=690&#038;upscale=false\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/3e825b35-df61-45f5-9693-a81101684b62\/4ff2df75-3e0a-442b-90a7-a817010beadb_aim-18.1-launch-controls-number-of-processors.jpg?width=690&#038;upscale=false\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2017-10-25T16:15:38+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2017-10-25T16:15:38+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: utilize more than one logical cpu | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"First click on the Physics block, then under Physics Solution click the Solver Options link, then select Launch Controls 1. I have a 4-core laptop that is configured for hyperthreading which allows two threads per core, so the Task Manager Performance tab shows 8 CPUs. You should only type in 4 not 8 for the number of\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/3e825b35-df61-45f5-9693-a81101684b62\/4ff2df75-3e0a-442b-90a7-a817010beadb_aim-18.1-launch-controls-number-of-processors.jpg?width=690&amp;upscale=false\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/55273\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/55273\\\/#listItem\",\"name\":\"Reply To: utilize more than one logical cpu\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/55273\\\/#listItem\",\"position\":2,\"name\":\"Reply To: utilize more than one logical cpu\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/55273\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/55273\\\/\",\"name\":\"Reply To: utilize more than one logical cpu | Ansys Learning Forum\",\"description\":\"First click on the Physics block, then under Physics Solution click the Solver Options link, then select Launch Controls 1. I have a 4-core laptop that is configured for hyperthreading which allows two threads per core, so the Task Manager Performance tab shows 8 CPUs. You should only type in 4 not 8 for the number of\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/55273\\\/#breadcrumblist\"},\"datePublished\":\"2017-10-25T16:15:38+00:00\",\"dateModified\":\"2017-10-25T16:15:38+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Reply To: utilize more than one logical cpu | Ansys Learning Forum","description":"First click on the Physics block, then under Physics Solution click the Solver Options link, then select Launch Controls 1. I have a 4-core laptop that is configured for hyperthreading which allows two threads per core, so the Task Manager Performance tab shows 8 CPUs. You should only type in 4 not 8 for the number of","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55273\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55273\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/forum","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55273\/#listItem","name":"Reply To: utilize more than one logical cpu"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55273\/#listItem","position":2,"name":"Reply To: utilize more than one logical cpu","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization","name":"Ansys Learning Forum","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/forum\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55273\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55273\/","name":"Reply To: utilize more than one logical cpu | Ansys Learning Forum","description":"First click on the Physics block, then under Physics Solution click the Solver Options link, then select Launch Controls 1. I have a 4-core laptop that is configured for hyperthreading which allows two threads per core, so the Task Manager Performance tab shows 8 CPUs. You should only type in 4 not 8 for the number of","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55273\/#breadcrumblist"},"datePublished":"2017-10-25T16:15:38+00:00","dateModified":"2017-10-25T16:15:38+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/forum\/#website","url":"https:\/\/innovationspace.ansys.com\/forum\/","name":"Ansys Learning Forum","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Learning Forum | Ansys Innovation Space","og:type":"article","og:title":"Reply To: utilize more than one logical cpu | Ansys Learning Forum","og:description":"First click on the Physics block, then under Physics Solution click the Solver Options link, then select Launch Controls 1. I have a 4-core laptop that is configured for hyperthreading which allows two threads per core, so the Task Manager Performance tab shows 8 CPUs. You should only type in 4 not 8 for the number of","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55273\/","og:image":"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/3e825b35-df61-45f5-9693-a81101684b62\/4ff2df75-3e0a-442b-90a7-a817010beadb_aim-18.1-launch-controls-number-of-processors.jpg?width=690&#038;upscale=false","og:image:secure_url":"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/3e825b35-df61-45f5-9693-a81101684b62\/4ff2df75-3e0a-442b-90a7-a817010beadb_aim-18.1-launch-controls-number-of-processors.jpg?width=690&#038;upscale=false","article:published_time":"2017-10-25T16:15:38+00:00","article:modified_time":"2017-10-25T16:15:38+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: utilize more than one logical cpu | Ansys Learning Forum","twitter:description":"First click on the Physics block, then under Physics Solution click the Solver Options link, then select Launch Controls 1. I have a 4-core laptop that is configured for hyperthreading which allows two threads per core, so the Task Manager Performance tab shows 8 CPUs. You should only type in 4 not 8 for the number of","twitter:image":"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/3e825b35-df61-45f5-9693-a81101684b62\/4ff2df75-3e0a-442b-90a7-a817010beadb_aim-18.1-launch-controls-number-of-processors.jpg?width=690&amp;upscale=false"},"aioseo_meta_data":{"post_id":"55273","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"content","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":true,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2024-10-11 22:09:46","updated":"2026-08-06 16:47:07","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tReply To: utilize more than one logical cpu\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Reply To: utilize more than one logical cpu","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/55273\/"}],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/55273","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/55273\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=55273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}