{"id":364352,"date":"2024-04-26T09:47:57","date_gmt":"2024-04-26T09:47:57","guid":{"rendered":"\/forum\/?post_type=topic&#038;p=364352"},"modified":"2024-08-21T16:58:28","modified_gmt":"2024-08-21T16:58:28","slug":"prepost-repeated-crashing-any-advice","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/prepost-repeated-crashing-any-advice\/","title":{"rendered":"Prepost repeated crashing: any advice?"},"content":{"rendered":"<p>Hello,<\/p>\n<p>I like Prepost but its repeated crashing when building a model is annoying (it becomes unresponsive which requires killing it to be more accurate).<\/p>\n<p>It mostly occurs when changing the nodes or elements (deleting, generating though elgen or remesh, replacing nodes, splitting, etc.) but never when changing coordinates (e.g. transforming). This happens with different models that open without warning in prepost (mostly R11 and R9).<\/p>\n<p>This has been happening for many years (I have been using prepost regularly but not full time for over 15 years).<\/p>\n<p>After the crash, repeating the same operation on a freshly opened file usually works. If not, doing the same operation in a different version works.<\/p>\n<p>So I typically save quite often a proj file as backup (quick to update) and restart from there after the crash.<\/p>\n<p>But today, my proj file got corrupted somehow as I was working in 4.12 2025\/R1.&nbsp;I cannot open it anymore in any version and I just lost two hours of tedious work. This is a new one.<\/p>\n<p>I have automatic proj save (every 8 minutes) but I guess it does not keep the versions after the file is saved (why by the way?). Bummer.<\/p>\n<p>So, my questions are the following:<\/p>\n<ul>\n<li>any possibility to extract contents of a corrupted proj file ?<\/li>\n<li>any possibility to keep intermediate .proj files? (the software should check that the file is not corrupted before deleting by the way)<\/li>\n<li>any possibility to generate crash dumps that could then be used by developpers for debug (difficult to post a bug for something that does not happen on a freshly opened file)<\/li>\n<li>when it becomes unresponsive (e.g. on element delete), what happens internally? If updating the nodes\/elements database, any function to check its consistency (to prevent crashing) ? How long to wait to see if it can recover (lets say for a model &lt;50k elements on a modern PC)?<\/li>\n<li>any other suggestion on settings\/practices?&nbsp;<\/li>\n<\/ul>\n<p>I alternate between Prepost 4.7, 4.8, 4.10, 4.11, 4.12 (each has its own lsppconf) including double precision versions on 4.11\/4.12 (seems useful with models with large ids), on two windows 10 machines with 32GB memory or more (one with integrated graphics, one with a Nvidia GPU: no difference by the way)&nbsp; and the current crashes are on a small model (&lt;30k elements, &lt;50 parts\/mat\/sections, a few contacts, spotwelds and CNRB options).<\/p>\n<p>Thanks<\/p>\n<p>Philippe<\/p>\n","protected":false},"template":"","class_list":["post-364352","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["23.206.193.146"],"_bbp_subscription":["346769","13694","436130"],"_btv_view_count":["2053"],"_bbp_topic_status":["unanswered"],"_bbp_likes_count":["1"],"_bbp_status":["publish"],"_bbp_topic_id":["364352"],"_bbp_forum_id":["27814"],"_bbp_engagement":["13694","346769"],"_bbp_voice_count":["2"],"_bbp_reply_count":["6"],"_bbp_reply_count_hidden":["1"],"_bbp_last_reply_id":["365926"],"_bbp_last_active_id":["365926"],"_bbp_last_active_time":["2024-05-07 17:42:04"]},"test":"philippe-beillasuniv-eiffel-fr"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/364352","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/364352\/revisions"}],"predecessor-version":[{"id":364353,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/364352\/revisions\/364353"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=364352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}