{"id":51329,"date":"2021-01-15T19:31:51","date_gmt":"2021-01-15T19:31:51","guid":{"rendered":"\/forum\/forums\/topic\/master-slave-boundary-hangs-sim\/"},"modified":"2021-01-15T19:31:51","modified_gmt":"2021-01-15T19:31:51","slug":"master-slave-boundary-hangs-sim","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/master-slave-boundary-hangs-sim\/","title":{"rendered":"Master\/slave boundary hangs sim?"},"content":{"rendered":"
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I am trying to simulate a circuit that is periodic in one dimension using master\/slave boundaries (now called coupled boundaries?). But when I add them the simulation hangs in one of the preliminary steps, and after a few minutes I get an error that the Com engine is non-responsive. If I replace the master\/slave boundaries with radiation boundaries then the simulation completes in seconds. That leads me to believe that it's not a problem with communication with the license server. When the sim is started, before and during hanging, there is no significant usage on my CPU (it pops up to ~60% load for a tick then falls back down) and my RAM load stays constant at around 50% of my 16 GB. So it doesn't seem related to an actual CPU or RAM bottleneck.<\/p>\n

Below is an image of my circuit, it is a very short section of CPW transmission line with a very long capacitive stub. The CPW is bisected by a H-wall symmetry boundary. The bright green panels are the wave ports. The master and slave boundaries are on the same planes as the ports. The thin outer boundaries above, to the left (across from the symmetry boundary), and below are all radiation boundaries.<\/p>\n

Zoomed out:<\/p>\n

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