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OCEAN SCRIPT for getting dynamic energy consumption

Carmichaeli

Hi everyone,

I designed a circuit through cadence virtuoso and extracted the spice netlist (.scs) from the ADE. Then I want to do circuit simulation many many times with different input variables by OCEAN SCRIPT. I know a little about the Ocean Script on how to use the For Loops, but I don't know how to get the dynamic energy consumption just by coding in ocn file.

It seems that the ADE can generate an ocean script file for one state automatically. If I use the calculator, the value of dynamic consumption can be calculated and shown in the Result Display Window by click "Tools" -> "Table" in the calculator window (I use average(i("/V0/PLUS" ?result "tran-tran"))*1.8 to get the value). But after saving (in ADE), I can't find any code segment containing this part (like integ, average or other computation) in that ocean file (also can't find them in the spectre netlist I just extracted). The spectre netlist and ocean script file seems just gave me the settings about this simulation or generated the psf file. I just can get the correct result through the calculator way. If I add my own code I always get zero.

Can anyone help me get the dynamic consumption in the ocean script way or give me a few examples?

Thank you extremely!

Here is ocn file,

-------------------------------------------------------- 

simulator( 'spectre )

design( "/homes/grad/cadence/Design/inverter_simulate/simulation/inverter_simulate/spectre/schematic/netlist/netlist")

resultsDir( "/homes/grad/cadence/Design/inverter_simulate/simulation/inverter_simulate/spectre/schematic" )

modelFile( 

    '("/homes/grad/cadence/models/spectre/tsmc20N.m" "")

    '("/homes/grad/cadence/models/spectre/tsmc20P.m" "")

)

analysis('tran ?stop "30n"  )

envOption(

'analysisOrder  list("tran") 

)

save( 'v "/out" "/in") 

temp( 27 ) 

run()

 

Parents

  • If you add the expression from the calculator into the ADE outputs (Outputs->Setup), then it would also appear in the saved OCEAN script.

    You could also just add:

    ocnPrint( average(i("/V0/PLUS" ?result "tran-tran"))*1.8 )

    into your OCEAN script after the run(). Or whatever expression you're using in the calculator. ocnPrint will print to the screen, but can also be given arguments to get it to print to a file (see the documentation for more details).

    Regards,

    Andrew.

Reply

  • If you add the expression from the calculator into the ADE outputs (Outputs->Setup), then it would also appear in the saved OCEAN script.

    You could also just add:

    ocnPrint( average(i("/V0/PLUS" ?result "tran-tran"))*1.8 )

    into your OCEAN script after the run(). Or whatever expression you're using in the calculator. ocnPrint will print to the screen, but can also be given arguments to get it to print to a file (see the documentation for more details).

    Regards,

    Andrew.

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