{"id":362986,"date":"2024-04-18T15:00:29","date_gmt":"2024-04-18T15:00:29","guid":{"rendered":"\/forum\/forums\/topic\/direct-solver-in-core-vs-out-of-core-mode-and-ram-usage\/"},"modified":"2024-04-18T15:03:29","modified_gmt":"2024-04-18T15:03:29","slug":"direct-solver-in-core-vs-out-of-core-mode-and-ram-usage","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/direct-solver-in-core-vs-out-of-core-mode-and-ram-usage\/","title":{"rendered":"direct solver in-core vs. out-of-core mode and RAM usage"},"content":{"rendered":"

Hello,<\/p>\n

i wanted to run a a thermomechanical simulation of the lpbf-process which consits of transient thermal and a linked static-structural system. The model consists of 808797 nodes. To solve the static-structural system i wanted to use the direct solver but i received an error message:<\/p>\n

\"\"<\/a><\/p>\n

My problem is that i do not unterstand why the direct solver does not change to the out-of-core memory mode. Earlier in the solution output file the solver is set to run in the in-core memory mode:<\/p>\n

\"\"<\/a><\/p>\n

Why does the solver choose to run in the in-core mode but then later fails to solve, because there is not enough physical memory available?<\/p>\n

Another question of mine is regarding the numbers at then end of the solution output file:<\/p>\n

What is the meaning of the following numbers and why is the number for allocated memory larger than the number for physical memory available? Is “sum of memory used on all processes” the amount of RAM which was used?<\/p>\n

\"\"<\/a><\/p>\n

I would be very grateful for any help.<\/p>\n","protected":false},"template":"","class_list":["post-362986","topic","type-topic","status-closed","hentry","topic-tag-AdditiveManufacturingModule-1","topic-tag-error","topic-tag-mechanical"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["343991","240"],"_bbp_author_ip":["23.206.193.146"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1451"],"_bbp_topic_status":["unanswered"],"_edit_lock":["1713452545:296417"],"_bbp_topic_id":["362986"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","343991"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["363229"],"_bbp_last_active_id":["363229"],"_bbp_last_active_time":["2024-04-19 15:04:40"]},"test":"fabian-potschulrwth-aachen-de"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/362986","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\/362986\/revisions"}],"predecessor-version":[{"id":362987,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/362986\/revisions\/362987"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=362986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}