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Monte Carlo for Verilog A based model file

Shobhitkareer

Hi,

I created a symbol using verilogA from 3 file which contains the defination for the other module, I created the following modification in the top level file

module FET(Drain,Gate,Source,Sub);


parameter real n1= 2;
parameter real n2=1;

(*cds_inherited_parameter*) parameter real monten1=0;
(*cds_inherited_parameter*) parameter real monten2=0;

localparam real n1_eff = n1 + monten1;
localparam real n2_eff = n2 + monten2;

FET_L2 #(.Lch(Lch),.Lgeff(Lgeff),.Lss(Lss),.Ldd(Ldd),.Efi(Efi),.Kgate(Kgate),.Tox(Tox),.Csub(Csub),.Ccsd(Ccsd),.CoupleRatio(CoupleRatio),.Vfbn(Vfbn),.Dout(Dout),.Sout(Sout),.GF(min(Wgate/1.0e-12,1.0)),.Pitch(Pitch),.CNTPos(1),.n1(n1_eff),.n2(n2_eff)) XNCNFET_L2_edge (int_Drain1, int_Gate1, int_Source1, Sub, int_Drain1);

and then i created a spectreText of the model and included it in the model library

simulator lang=spectre

subckt NCNFET_L3_MC1 Drain Gate Source Sub
parameters monten1 = 10 monten2 = 10
statistics {
mismatch {
vary monten1 dist=gauss std=5
vary monten2 dist=gauss std=5
}
}
ends NCNFET_L3_MC

but Im getting the following error:-

The HDL cell-view "shobhit" "NCNFET_L3_MC1" "veriloga" does not have view-specific
simulation data. To create the data please open and save the view.
You may also update the view by executing the following SKILL command:
ahdlUpdateViewInfo("shobhit" ?cell "NCNFET_L3_MC1" ?view "veriloga")
End netlisting Aug 2 13:26:14 2018

Im using IC6.7 and mmsim15.10

Parents
  • Andrew Beckett

    Well, the first mistake is that it makes no sense to put the statistics block inside a subckt. Rather than creating  a spectreText view with that in (spectreText views are intended for structural designs really), you should create a text file (say monte.scs) with the contents of that subckt (without the subckt lines) and then include it in your simulation by Setup->Model Libraries in ADE.

    I have no idea why it would be complaining about shobhit/NCNFET_LC_MC1/veriloga when you've created a module called FET. Even if you created the cell called NCNFET_LC_MC1 but had called the module inside FET (not a good idea), I wouldn't have expected this error. I suspect there's some key bit of information you've omitted to mention - I don't even know why it would be looking at that view.

    Given the amount of time and effort it took last time to guess what you'd done wrong, I suggest you contact customer support so that somebody can take a look at what you've done rather than going back and forth all the time. I'm not sure I have the patience (sorry...)

    Andrew.

Reply
  • Andrew Beckett

    Well, the first mistake is that it makes no sense to put the statistics block inside a subckt. Rather than creating  a spectreText view with that in (spectreText views are intended for structural designs really), you should create a text file (say monte.scs) with the contents of that subckt (without the subckt lines) and then include it in your simulation by Setup->Model Libraries in ADE.

    I have no idea why it would be complaining about shobhit/NCNFET_LC_MC1/veriloga when you've created a module called FET. Even if you created the cell called NCNFET_LC_MC1 but had called the module inside FET (not a good idea), I wouldn't have expected this error. I suspect there's some key bit of information you've omitted to mention - I don't even know why it would be looking at that view.

    Given the amount of time and effort it took last time to guess what you'd done wrong, I suggest you contact customer support so that somebody can take a look at what you've done rather than going back and forth all the time. I'm not sure I have the patience (sorry...)

    Andrew.

Children
  • Shobhitkareer
    in reply to Andrew Beckett

    Thank you Andrew for your time, I'll contact customer service.

    Regards

    Shobhit

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