Hi,<\/p>\n
<\/p>\n
I am trying to simulate my full chip design which has a planar CPW transmission line structure along with an oscillator which is capacitively coupled to the transmission line. I am interested in the two port S parameter simulation (driven modal). The design requires fine meshing near the coupling site so that I can capture the oscillator’s resonance frequency accurately. This results in a mesh size which typically requires about 7-8 million tetrahedrons. I also have certain mesh operations which achieves a minimum tetrahedron count which the adaptive meshing then build off on this initial seed mesh. <\/p>\n
<\/p>\n
I first use a multi-frequency solution setup to accurately get the S parameters (based on the convergence) at a few frequencies where I expect the oscillator’s resonance frequency is. This itself takes about a 1-1.5 days of simulation time. I then use this as a source design (source mesh) which I then import to a target design where I would like to use this solution to do a parametric sweep. I am only changing the inductance of the oscillator. <\/p>\n
<\/p>\n
Here are my questions:<\/p>\n
<\/p>\n
1. I am using Ansys Electronics desktop 2019 on a 20 core machine with 512 GB RAM with HPC option. The CPU usage indicates that HFSS is only utilizing less than 10% of the RAM for doing the adaptive meshing for different passes. Can this be optimized so I can run the simulation faster? <\/p>\n
<\/p>\n
2. When I link the source mesh from one design to a new target design which aims at doing the optimetrics sweep for inductance with the same geometry as the source design, why does HFSS require me to solve the source solution again? Why doesn’t it use the source design solution to do the optimetrics?<\/p>\n
<\/p>\n
Thanks!<\/p>\n","protected":false},"template":"","class_list":["post-39248","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["11427"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["1035"],"_bbp_subscription":["244758"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["39248"],"_bbp_forum_id":["27793"],"_bbp_engagement":["39445","170378"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["99938"],"_bbp_last_active_id":["99938"],"_bbp_last_active_time":["2019-12-04 14:53:53"]},"test":"vadisam"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/39248","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\/39248\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=39248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}