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Trouble with ocean script for parametric analysis using ADE L

saikatc

Hi,

I am using ocean scripting for parametric analysis of my design. There I came across a strange issue. My interest is to vary the supply voltage for that I am using a variable called v_supply. For single simulation when I am assigning a value to that variable, it is working. 

desVar( "v_supply" 300m)

But when I want to have a parametric analysis using the same, it is showing the following message.

*INFO* (icLic-25) License Analog_Design_Environment_GXL ("95220") was used to run ADE L.
The variable "v_supply" is not defined in the current
design.

I am using the following codes. 

paramAnalysis("v_supply" ?values '(300 425 550 675 800 ))
paramRun ()

I also tried with 

paramAnalysis("v_supply" ?start 300 ?stop 800 ?step 100)
paramRun ()

without any difference.

Any help will be appreciated.

Regards

Saikat Chatterjee

Parents
  • saikatc

    Hi Andrew,

    to get rid of the weird behaviour I restarted virtuoso. After that I kept on getting more such weird behaviours. Later I figured out that it was using the old netlist which in turn was causing the failure. So the 1st hurdle regarding parametric analysis is over.

    Now I am struggling with printing the data into a file. The simulation is successful and plotting the waveform. I intend to calculate the rise time, propagation delay and store into a file. There are two issues.

    1. When I am using ocnPrint; the data are being stored but the name of column is printed as the expression.

    ocnPrint(?output "r.txt" rise_time ?numberNotation 'none)

    Result:

    v_supply riseTime v("/Z" ?resultsDir "/homes/schatterjee/subvt_28/SUBVT28CORE_test/simulation/lslh_28nm_lvt_test_new/spectre/schematic" ?result "tran") 0 1 10 90 "time"


    0.3         3.66751e-08
    0.325     3.19714e-08
    0.35       2.90787e-08
    0.375     2.68736e-08
    0.4         2.41881e-08

    2. If I am using fprintf, nothing is printed inside the file. I am using the following command

    fprintf(out "%f", rise_time)

    But in both the cases the output of the simulation is successful.

    Thanks in advance

    Saikat Chatterjee

Reply
  • saikatc

    Hi Andrew,

    to get rid of the weird behaviour I restarted virtuoso. After that I kept on getting more such weird behaviours. Later I figured out that it was using the old netlist which in turn was causing the failure. So the 1st hurdle regarding parametric analysis is over.

    Now I am struggling with printing the data into a file. The simulation is successful and plotting the waveform. I intend to calculate the rise time, propagation delay and store into a file. There are two issues.

    1. When I am using ocnPrint; the data are being stored but the name of column is printed as the expression.

    ocnPrint(?output "r.txt" rise_time ?numberNotation 'none)

    Result:

    v_supply riseTime v("/Z" ?resultsDir "/homes/schatterjee/subvt_28/SUBVT28CORE_test/simulation/lslh_28nm_lvt_test_new/spectre/schematic" ?result "tran") 0 1 10 90 "time"


    0.3         3.66751e-08
    0.325     3.19714e-08
    0.35       2.90787e-08
    0.375     2.68736e-08
    0.4         2.41881e-08

    2. If I am using fprintf, nothing is printed inside the file. I am using the following command

    fprintf(out "%f", rise_time)

    But in both the cases the output of the simulation is successful.

    Thanks in advance

    Saikat Chatterjee

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