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How to sweep multiple params and save the specific param selected from the circuit?

diffsland

first of all,  i am fresh here. and i am happy to be here.

recently, i am learning how to use ocn. and i met a question troubled me a lot.

simulator('spectre)  //  design(".../netlist")  //  resultDir(".../schematic")  //  modelfile('(".../saveop.scs" "") '(".../toplevel.scs" "top_tt"))

analysis('dc ?saveOppoint t ?dev "/V2" ?param "dc" ?start "0.3" ?stop "1.1" ?lin "200")

envOption('analysisOrder list("dc") )

temp(27)

run()

selectResult('dc)

ocnPrint(?output ".../xx.dat" ?numberNotation 'scientific getData("M0:gm"),....)

this is the code i am use to get param from circuit.

however, i have to sweep multiple params in circuit, and save the params from circuit as mentioned above.

i've tried "foreach, while" synax, and  failed. and i also read the ocnref together with ocn sample script in dfii. 

unfortunately, i could not figure out how~~~

the param sweeping code i attached below:

simulator('spectre)  //  design(".../netlist")  //  resultDir(".../schematic")  //  modelfile('(".../saveop.scs" "") '(".../toplevel.scs" "top_tt"))

analysis('dc ?saveOppoint t )

desVar ("a" 650m)

desVar("b" 300m)

envOption('analysisOrder list("dc") )

temp(27)

paramAnalysis("a" ?values '(0.6 0.62 0.64)

paramAnalysis("b" ?values '(0.3 0.35)))

paramRun()

hope someone could help me~~thanks a lot!!!

Parents
  • ShawnLogan

    Dear

    diffsland said:

    this is the code i am use to get param from circuit.

    however, i have to sweep multiple params in circuit, and save the params from circuit as mentioned above.

    i've tried "foreach, while" synax, and  failed. and i also read the ocnref together with ocn sample script in dfii. 

    unfortunately, i could not figure out how~~~

    the param sweeping code i attached below:

    I am sure others will warn you, so I will at least mention it, but the param() functionality is rarely used today in lieu of Assembler or Explorer. Nevertheless, I do occasionally use it and used it quite often in the past. I will also add that it is far less efficient than the job submittal processes in Assembler or Explorer.

    I have attached some sample ocean code that will retrieve data from a parametric analysis. In this case, it is computing the real and imaginary parts of an impedance. The param function sweeps a DC voltage over  a particular range and the code computes the real and imaginary impedances for each value of the voltage over that range. The sweep over the range is accomplished using a while() loop. A foreach() loop surrounds the code to run the data retrieval on three separate param() analyses in three different simulations. The results are written to a comma-separated variable file for each simulation directory. The function calls two procedures that I also attached - getWave() and find_netlist_param(). The former replaces the ocean getData() command and adds some error checking to make a failure to access a waveform more visible. The latter finds the process case that is used in the simulation. I hope the code is commented well enough for you to understand how to access results from a param() analysis. The three files are in the attached zip file.

    Shawn

    param_ocean_files.zip

  • ShawnLogan
    in reply to diffsland

    Dear diffsland,

    I just hope the code makes sense to you..good luck!

    Shawn

Reply
  • ShawnLogan
    in reply to diffsland

    Dear diffsland,

    I just hope the code makes sense to you..good luck!

    Shawn

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