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simulation with huge number of duplicated caps

hello experts,

we have design with thousands of duplicated caps. the simulation speed is quite slow for so many devices working together. is there some switch for the simulator to know that these duplicated caps are between same nodes so actually they can be combined into single big cap to speed up the simulation?

e.g., between A and B nodes there're 1000 caps of 1fF. can the tool combine them into single 1pF cap when running simulation?

thanks,

David

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