thanks Andrew, I got it. that gives me enough hooks to play with whenever I need them saved or not. still a little bit more clarification as you mentioned it'll default to save=selected and later you mentioned it'll even default to save all. from my observation, if I just saved a coupled by save( 'v "/in1" "/in2"), I can still plot quite a lot more signals into waveform by plot command in the same Ocean script. does the simulator pre-screen the ocean script ahead so that it knows what signals are already selected to plot so better to save them ahead, even they are not explicitly requested to be saved? [quote userid="4936" url="~/cadence_technology_forums/f/custom-ic-skill/38791/long-time-ocean-simulation-w-o-saving-any-waveform-database/1355134#1355134"][/quote] If you don't use save() or saveOption(), the default in spectre is save=selected. What that means is that if no signals are "selected" to be saved (i.e. with a spectre save statement, corresponding to the save() function in OCEAN), then all voltages (or at least all "public" or normally useful voltages; i.e. not those which are internal nodes within devices) are saved. thanks, David![]()
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