https://communities.bentley.com/products/geotech-analysis/f/forum/241788/slightly-different-results-when-rerunning-the-same-plaxis-modelHi, I encountered a problem during the data extraction process: If I rerun a model without any changes, sometimes I will encounter a convergence issue at a phase where no convergence issue occurs the first time I run the model. It can be resolveden-USTelligent Community 12https://communities.bentley.com/thread/754624?ContentTypeID=1Thu, 23 Feb 2023 10:09:55 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:6ee19880-d16d-4392-ae80-ff400dda2d2aStefanos Papavasileiou<p>Dear Teng,</p> <p>If you encounter convergence issue sometimes I would advise you to check what causes them. You can check our&nbsp;&nbsp;<a href="https://communities.bentley.com/products/geotech-analysis/w/wiki/52853/calculation-kernel-convergence-log">Calculation Kernel Convergence log</a>&nbsp;article that explains how to read our log file and try and understand what causes the problem.</p> <p>In general &quot;small difference&quot; is a very subjective term. I would care on judging the difference on engineering levels and not on purely mathematic differences.</p> <p>There are no known issues on convergence problems with a calculation. That can occur as we perform numerical analyses. Each time you get an error there are possible explanations, which are described on our Reference manual Appendix.&nbsp;</p> <p>Should you need further assistance, please&nbsp;submit a service request. Then, one of our support engineers can help you in detail: <a id="" href="https://apps.bentley.com/srmanager/ProductSupport">https://apps.bentley.com/srmanager/ProductSupport</a></p><div style="clear:both;"></div>