With the update from LTspice 17 to 26 on macOS, LTspice now includes many features from the Windows release. However, memory usage has increased significantly. A simple CMOS inverter using the sky130A PDK (translated from ngspice to ltspice): RAM usage has increased from 100MB to 1GB! As circuit complexity increases, RAM usage increases hugely, up to 5Gb for only 5 inverters!
I imagine that, to update LTspice to the same Windows version, designers may have needed to use Rosetta 2, but I would like to ask whether this huge memory increase is expected behavior. With these memory requirements, I may no longer be able to use LTspice on macOS.




I am simulating the CMOS_Inverter circuit in the sky130A folder from my repository
https://github.com/Torr250/Analog-ICDesign-OpenTools/tree/main/LTspice/sky130A








