{"id":357281,"date":"2024-03-15T13:27:19","date_gmt":"2024-03-15T13:27:19","guid":{"rendered":"\/forum\/forums\/reply\/357281\/"},"modified":"2024-03-15T13:27:19","modified_gmt":"2024-03-15T13:27:19","slug":"357281","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/357281\/","title":{"rendered":"Reply To: Interruption during design optimisation in ANSYS APDL"},"content":{"rendered":"<p>&lt;p&gt;The error you&#8217;re encountering, known as a Segmentation Violation, is indeed often related to memory issues. It can occur when the program tries to access a memory location that it&#8217;s not allowed to, which can be due to various reasons. Here are some possible solutions:&lt;\/p&gt;&lt;p&gt;1. **Balancing CPU, Memory, and I\/O**: To achieve good overall performance, it&#8217;s crucial to have the correct balance of processors, memory, and disk I\/O. The CPU speed is an obvious factor of performance. However, the other two factors&mdash;memory and disk I\/O&mdash;are not always so obvious. Large amounts of memory can not only extend the model size that can be simulated on a given machine but also play a significant role in achieving optimal performance https:\/\/ansyshelp.ansys.com\/Views\/Secured\/corp\/v232\/en\/ans_per\/percpumemio.html&lt;\/p&gt;&lt;p&gt;2. For desktop systems and many cluster configurations, it&#8217;s important to understand that many cores share the same disk resources. Therefore, obtaining fast I\/O performance in applications such as Mechanical APDL is often not as simple as adding a fast RAID0 configuration. Performance is best when solver I\/O can be eliminated or when multiple nodes are used for parallel runs, each with a separate local I\/O resource: https:\/\/ansyshelp.ansys.com\/Views\/Secured\/corp\/v232\/en\/ans_per\/perioansys.html&lt;\/p&gt;&lt;p&gt;3. If Mechanical APDL simulations can run with all file I\/O cached by a large amount of physical memory, then disk resources can be concentrated on storage more than performance. A good rule of thumb is to have 10 times more disk space than physical memory available for your simulation&lt;\/p&gt;&lt;p&gt;4. If all fails, and memory upgrade is not possible, you can try to reduce your model size&lt;\/p&gt;&lt;p style=&#8221;margin: 0px !important; padding: 0px !important;&#8221;&gt;-Aniket&lt;\/p&gt;&lt;p style=&#8221;margin: 0px !important; padding: 0px !important;&#8221;&gt;<a href=\"https:\/\/innovationspace.ansys.com\/forum-rules-guidelines\/\">Forum Rules &amp; Guidelines<\/a>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-357281","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/357281","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\/357281\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=357281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}