{"id":392162,"date":"2024-10-31T04:56:51","date_gmt":"2024-10-31T04:56:51","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/high-ram-simulations-usually-crashing-but-intermittently-succeeding\/"},"modified":"2024-10-31T04:56:51","modified_gmt":"2024-10-31T04:56:51","slug":"high-ram-simulations-usually-crashing-but-intermittently-succeeding","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/high-ram-simulations-usually-crashing-but-intermittently-succeeding\/","title":{"rendered":"High RAM Simulations Usually Crashing, But Intermittently Succeeding"},"content":{"rendered":"<p>&lt;p&gt;We are running high-RAM simulations (~1.5 TB) at the Minnesota Supercomputing Institute. The simulations tend to crash repeatedly, usually citing insufficient RAM. However, the same simulations do manage to complete intermittently. When they complete, HFSS consistently records a RAM value hundreds of GB below our actual allocation limit (2 TB). Our question: why would the simulations crash so often due to insufficient RAM when they don&#8217;t end up requiring more than is available?&lt;\/p&gt;&lt;p&gt;The only trend we notice is that higher frequency simulations (which usually require a finer mesh) tend to crash more frequently than lower frequency runs. However, as stated, when higher frequency simulations do successfully complete, they do not require much more RAM than lower frequency ones.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-392162","topic","type-topic","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=\"We are running high-RAM simulations (~1.5 TB) at the Minnesota Supercomputing Institute. The simulations tend to crash repeatedly, usually citing insufficient RAM. However, the same simulations do manage to complete intermittently. When they complete, HFSS consistently records a RAM value hundreds of GB below our actual allocation limit (2 TB). Our question: why would the\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/high-ram-simulations-usually-crashing-but-intermittently-succeeding\/\" \/>\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=\"High RAM Simulations Usually Crashing, But Intermittently Succeeding | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"We are running high-RAM simulations (~1.5 TB) at the Minnesota Supercomputing Institute. The simulations tend to crash repeatedly, usually citing insufficient RAM. However, the same simulations do manage to complete intermittently. When they complete, HFSS consistently records a RAM value hundreds of GB below our actual allocation limit (2 TB). Our question: why would the\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/high-ram-simulations-usually-crashing-but-intermittently-succeeding\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-10-31T04:56:51+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-10-31T04:56:51+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"High RAM Simulations Usually Crashing, But Intermittently Succeeding | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"We are running high-RAM simulations (~1.5 TB) at the Minnesota Supercomputing Institute. The simulations tend to crash repeatedly, usually citing insufficient RAM. However, the same simulations do manage to complete intermittently. 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