{"id":54058,"date":"2021-03-30T14:30:27","date_gmt":"2021-03-30T14:30:27","guid":{"rendered":"\/forum\/forums\/topic\/fdtd-simulation-taking-huge-amount-of-memory-and-very-long-runtime\/"},"modified":"2021-03-30T14:30:27","modified_gmt":"2021-03-30T14:30:27","slug":"fdtd-simulation-taking-huge-amount-of-memory-and-very-long-runtime","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fdtd-simulation-taking-huge-amount-of-memory-and-very-long-runtime\/","title":{"rendered":"FDTD simulation taking huge amount of memory and very long runtime."},"content":{"rendered":"<p>Hello!nnI am admittedly a beginner using Lumerical, and I am primarily trying to derive the S parameters and E radiation plots for a simple Y-branch splitter. I believe that I am defining my ports and simulation area correctly, but when I try to run my simulation, it requires sometimes hundreds of GB to run, taking 12+ hours. When I scale my design down to <20 um, my runtime is much more realistic. I feel that I must be defining some parameter incorrectly, and I have run into a dead end in trying to troubleshoot this issue. Can anyone provide any insight on what types of settings I might alter or change to be able to run my simulation? I cannot attach a .log file, as I have not completed a full run of the simulation due to the size.\n<\/p>\n","protected":false},"template":"","class_list":["post-54058","topic","type-topic","status-closed","hentry","topic-tag-photonics"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["26385"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["\b\u0013??"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["2273"],"_bbp_subscription":["233619"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["54058"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","188171"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["148881"],"_bbp_last_active_id":["148881"],"_bbp_last_active_time":["2021-03-30 21:36:32"]},"test":"aloram"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/54058","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":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/54058\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=54058"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}