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  3. Save specified output option in ADE XL transient simulations...

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Save specified output option in ADE XL transient simulations not working

LMendolia
LMendolia over 2 years ago

Hi,

I am running many transient simulations on a schematic by sweeping global variables in ADE XL. All I want to get out of these is a single transient trace per simulation.
I am however noticing that, in addition to the output signal specified in ADE XL, all transient node voltages are also saved. This results in unmanageable disk usage and severely reduces the number of simulations I can run in one go. The transient traces I care about amount to around 500MB when exported to a .tran PSF file, but the entire simulation results take up roughly 100GB.

I tried preventing all node voltages from being saved by changing the "Select signal to output (save)" from allpub to selected (and even none, just to try) in the "Save all..." menu of ADE XL's Outputs pane as well as in the Test editor (I also unchecked/set to None everything else in that menu). Still in the Test editor, I also set the Transient simulation output save option to selected, but none of these did anything as I'm still seeing significant disk usage and all the node voltages in the Results Browser.

Is there anything else I could try to get rid of this unnecessary data? Many thanks in advance for your help.
Loris

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  • Andrew Beckett
    Andrew Beckett over 2 years ago

    Loris,

    That sounds very odd. The only way I can imagine this might happen is if you are either saving a non-existent node (in which case "selected" will default to saving all node voltages), or for some reason you have a more general save in the netlist.

    Can you share the analysis/options statements from the bottom of the input.scs (if you go over one of your points in ADE and do Right Mouse->View Netlist) and then share the bottom part with options/anayses/saves etc

    Also (and I'm not sure it should matter), which IC sub-version are you using (Help->About will tell you this) and which spectre sub-version (this will appear near the top of the simulator output log). Does the simulator log mention anything related to saving signals?

    Andrew

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  • Andrew Beckett
    Andrew Beckett over 2 years ago

    Loris,

    That sounds very odd. The only way I can imagine this might happen is if you are either saving a non-existent node (in which case "selected" will default to saving all node voltages), or for some reason you have a more general save in the netlist.

    Can you share the analysis/options statements from the bottom of the input.scs (if you go over one of your points in ADE and do Right Mouse->View Netlist) and then share the bottom part with options/anayses/saves etc

    Also (and I'm not sure it should matter), which IC sub-version are you using (Help->About will tell you this) and which spectre sub-version (this will appear near the top of the simulator output log). Does the simulator log mention anything related to saving signals?

    Andrew

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  • LMendolia
    LMendolia over 2 years ago in reply to Andrew Beckett

    Hi Andrew,

    The solution Marc suggested below worked. It turns out I was not saving any nodes since my output signal is a current, hence Spectre defaulted to saving all voltages.

    Best,
    Loris

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