{"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>The error you’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’s not allowed to, which can be due to various reasons. Here are some possible solutions:<\/p><p>1. **Balancing CPU, Memory, and I\/O**: To achieve good overall performance, it’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—memory and disk I\/O—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<\/p><p>2. For desktop systems and many cluster configurations, it’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<\/p><p>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<\/p><p>4. If all fails, and memory upgrade is not possible, you can try to reduce your model size<\/p><p style=”margin: 0px !important; padding: 0px !important;”>-Aniket<\/p><p style=”margin: 0px !important; padding: 0px !important;”>Forum Rules & Guidelines<\/a><\/p><\/p>\n","protected":false},"template":"","class_list":["post-357281","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t