{"id":295219,"date":"2023-07-27T17:03:00","date_gmt":"2023-07-27T17:03:00","guid":{"rendered":"\/forum\/forums\/topic\/invalid-matrix-error\/"},"modified":"2023-07-27T17:16:54","modified_gmt":"2023-07-27T17:16:54","slug":"invalid-matrix-error","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/invalid-matrix-error\/","title":{"rendered":"Invalid Matrix Error"},"content":{"rendered":"

Hello,<\/p>\n

I am working on a simulation to optimize the transmission through an AR-coated III-V waveguide facet. I have an optimization working on three variables, the angle of the interface, the refractive index of the AR coating, and the thickness of the coating. I will run the optimization with a generation size of 20 and about 1-3 simulations of the generation will fail unexpectedly. I have gone to the offending simulations (Number 13 in this case) and attempted to run it manually and received the exact same error, so I do not believe it has anything to do with licensing (as I saw suggested in another post somewhat related to this one).<\/p>\n

Originally, I had the mesh accuracy set to 5. Setting it to 6 allows the simulation to run, so I tried to run the optimization again with the higher accuracy and still had 1-3 simulations fail. Also, this is not a desirable workaround as it slows down each generation. <\/p>\n

I know there are likely smarter ways of designing said single-layer AR coating, but I see no reason why my approach does not work for certain combinations of the three parameters.<\/p>\n

  <\/a><\/p>\n

Any help would be greatly appreciated.<\/p>\n

Edit: posted script did not appear as it should’ve<\/p>\n","protected":false},"template":"","class_list":["post-295219","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t