{"id":407977,"date":"2025-02-01T15:43:55","date_gmt":"2025-02-01T15:43:55","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/help-running-the-optimization-sweep-example-of-grating-coupler-in-fdtd\/"},"modified":"2025-02-01T15:43:55","modified_gmt":"2025-02-01T15:43:55","slug":"help-running-the-optimization-sweep-example-of-grating-coupler-in-fdtd","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/help-running-the-optimization-sweep-example-of-grating-coupler-in-fdtd\/","title":{"rendered":"Help running the optimization sweep example of grating coupler in FDTD"},"content":{"rendered":"<p>&lt;p&gt;Hi all,&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;ive been trying to run the example simulation of the grating couplers &#8211; (https:\/\/optics.ansys.com\/hc\/en-us\/articles\/360042305334-Grating-coupler) when i try to run the 2D simulation in fdtd it works fine but then when i run the parameter sweep optimiziation whic supposed to get me the optimized pitch and duty cycle of the grating im getting the following error:&lt;br&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/02\/01-02-2025-1738424450-Screenshot 2025-02-01 172719.png\" alt=\"\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;note that i did not change any parameters of the model objects and for the parameter sweep values, i just downloaded the example and ran it (first i ran the model itself and only then i ran the optimization parameter sweep) and the parameter sweep results conclude with this error after less than 5 minuets.&nbsp;&lt;\/p&gt;&lt;p&gt;did someone encounter this?&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Thanks,&lt;\/p&gt;&lt;p&gt;Leroy&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-407977","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27833"],"_bbp_topic_id":["407977"],"_bbp_author_ip":["132.68.68.83"],"_bbp_last_reply_id":["408411"],"_bbp_last_active_id":["408411"],"_bbp_last_active_time":["2025-02-05 01:59:11"],"_bbp_reply_count":["5"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["3"],"_bbp_engagement":["476356","473055","511085"],"_btv_view_count":["218"],"_bbp_topic_status":["unanswered"],"_bbp_subscription":["476356","473055","511085"],"_edit_lock":["1738610421:473055"],"_bbp_notification_enabled":["473055"]},"test":"leroy-dokcampus-technion-ac-il"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/407977","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\/407977\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=407977"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}