{"id":394593,"date":"2024-11-20T17:00:14","date_gmt":"2024-11-20T17:00:14","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/394593\/"},"modified":"2024-11-20T17:00:14","modified_gmt":"2024-11-20T17:00:14","slug":"394593","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/394593\/","title":{"rendered":"Reply To: High RAM Simulations Usually Crashing, But Intermittently Succeeding"},"content":{"rendered":"<p>&lt;p&gt;I tried switching to the iterative solver, and that does save quite a bit of RAM (as much as 400 GB), however the same problem still happens with somewhat finner meshes. It moves the bar up somewhat, but not enough. I have included the profile data from two different types of crashes. The first from before we switched to the iterative solver, and the second from after. Immediately below is the example of a crash using the direct solver. Note that it says &#8220;Out of RAM&#8221;, but our actual ram limit was 1.97 TB, which is much higher than the 1.58 TB it lists using at the time of crashing. It is also important to note that simulations like this intermittently succeed with significantly less RAM than our limit (1.3-1.5 TB).&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/20-11-2024-1732120516-mceclip0.png\" width=\"1096\" height=\"625\" \/>&lt;\/p&gt;&lt;p&gt;The next image shows a crash that happened after switching to the iterative solver. The profile shows almost no useful information:&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/20-11-2024-1732121761-mceclip1.png\" width=\"1098\" height=\"632\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-394593","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=\"I tried switching to the iterative solver, and that does save quite a bit of RAM (as much as 400 GB), however the same problem still happens with somewhat finner meshes. It moves the bar up somewhat, but not enough. I have included the profile data from two different types of crashes. The first from\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/394593\/\" \/>\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: High RAM Simulations Usually Crashing, But Intermittently Succeeding | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I tried switching to the iterative solver, and that does save quite a bit of RAM (as much as 400 GB), however the same problem still happens with somewhat finner meshes. It moves the bar up somewhat, but not enough. I have included the profile data from two different types of crashes. The first from\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/394593\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-11-20T17:00:14+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-11-20T17:00:14+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: High RAM Simulations Usually Crashing, But Intermittently Succeeding | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"I tried switching to the iterative solver, and that does save quite a bit of RAM (as much as 400 GB), however the same problem still happens with somewhat finner meshes. It moves the bar up somewhat, but not enough. I have included the profile data from two different types of crashes. The first from\" \/>\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\\\/394593\\\/#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\\\/394593\\\/#listItem\",\"name\":\"Reply To: High RAM Simulations Usually Crashing, But Intermittently Succeeding\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/394593\\\/#listItem\",\"position\":2,\"name\":\"Reply To: High RAM Simulations Usually Crashing, But Intermittently Succeeding\",\"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\\\/394593\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/394593\\\/\",\"name\":\"Reply To: High RAM Simulations Usually Crashing, But Intermittently Succeeding | Ansys Learning Forum\",\"description\":\"I tried switching to the iterative solver, and that does save quite a bit of RAM (as much as 400 GB), however the same problem still happens with somewhat finner meshes. It moves the bar up somewhat, but not enough. I have included the profile data from two different types of crashes. 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It moves the bar up somewhat, but not enough. I have included the profile data from two different types of crashes. 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