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integration operation and delay operation with spectre input.scs simulation

samung

Hello !!

I would like to launch from a batch simulation through spectre, a transient simulation and to do an integration of the voltage and current curves to get the consumed power.

I have not managed yet to find the syntaxe for the "integration operation". Plus I would like to get the syntaxe for a "delay operation".

 

Extract of the input.scs :

tran tran stop=6.6nn write="spectre.ic" writefinal="spectre.fc"  annotate=status save=selected maxiters=5 

finalTimeOP info what=oppoint where=rawfile

modelParameter info what=models where=rawfile

element info what=inst where=rawfile

outputParameter info what=output where=rawfile

designParamVals info what=parameters where=rawfile

primitives info what=primitives where=rawfile

subckts info what=subckts  where=rawfile

save vinput vss net_pl device_state vdd Rdevice:1

export power_dyn_consumed = int((i("Rdevice:1") * v("vinput")) 2n 4.6n)

saveOptions options save=selected subcktprobelvl=2 

 

 

for the delay, it should be something like :

delay_writing = delay(?wf1 v("vinput" ?result "tran") ?value1 0.5 ?edge1 "rising" ?nth1 1 ?td1 0.0 ?wf2 v("device_state" ?result "tran") ?value2 0.5 ?edge2 "rising" ?nth2 1 ?td2 0.0 ?stop nil ?multiple nil)

 

 

Commandline :

spectre /home/.../simulations/FF_svtsvt_1V_0C/TC_TR/1_0.04//input.scs +log /home/.../simulations/FF_svtsvt_1V_0C/TC_TR/1_0.04//log_file.log

 

 spectre -W

sub-version  10.1.1.181.isr12 

 

 

Thanks a lot !! 

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  • Andrew Beckett

    The export statement in the netlist is:

    1. For internal use only - it's supported with ADE (if you see "spectre -h export" you'll see this).
    2. For monte carlo only. It doesn't work for other kinds of analysis. 

    If you want to do this from batch, the right way is to create an MDL script. For example:

    alias measurement doInteg {
     run tran
     export real power_dyn_consumed=integ(trim(i(Rdevice:1)*v(vinput),from=2n,to=4.6n))
    }

    run doInteg

    Put this in a file called "doInteg.mdl" and then you can do:

    spectremdl -design input.scs -batch doInteg.mdl

    and you will then get a file called (by default) doInteg.measure containing the measurement results in.

    The syntax of spectre's Measurement Description Language is covered in the documentation. You can also use "viva -expr MDL" or vivamdl (in IC616) to bring up the MDL calculator to build expressions that way.

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    The export statement in the netlist is:

    1. For internal use only - it's supported with ADE (if you see "spectre -h export" you'll see this).
    2. For monte carlo only. It doesn't work for other kinds of analysis. 

    If you want to do this from batch, the right way is to create an MDL script. For example:

    alias measurement doInteg {
     run tran
     export real power_dyn_consumed=integ(trim(i(Rdevice:1)*v(vinput),from=2n,to=4.6n))
    }

    run doInteg

    Put this in a file called "doInteg.mdl" and then you can do:

    spectremdl -design input.scs -batch doInteg.mdl

    and you will then get a file called (by default) doInteg.measure containing the measurement results in.

    The syntax of spectre's Measurement Description Language is covered in the documentation. You can also use "viva -expr MDL" or vivamdl (in IC616) to bring up the MDL calculator to build expressions that way.

    Regards,

    Andrew.

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