# Design Kit error or cadence error

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#### whitewiz

##### Member level 3
ppar is undefined or is used recursively

I installed the TSMC 0.35um CM Process design kit in my unix system.
When I run the simulation in the analog envirnment in Cadence Virtuoso, I always got the error message so I can not use that at all. I am not sure this error is originally design kit error or cadence error/

Do you know what this error message means?

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Error found by spectre in pip', during circuit read-in.
"/auto/home/project/tsmc35mm/../skill/../models/mm0355v.scs" 2448:
Function v' is undefined or is used recursively.
"/auto/home/project/tsmc35mm/../skill/../models/mm0355v.scs" 2448:
Function v' is undefined or is used recursively.
"/auto/home/project/tsmc35mm/../skill/../models/mm0355v.scs" 2448:
Function v' is undefined or is used recursively.

spectre terminated prematurely due to fatal error.
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##### Member level 5
tsmc35mm

I get the same kind of error!
Function pPAR in (XYZ) instance is undfnd or used recursively!

However, it works after some time ...

i use IC.5.1.41

Error found by spectre in inv1', during circuit read-in.
"input.scs" 15: Function pPar' is undefined or is used recursively.
"input.scs" 16: Function pPar' is undefined or is used recursively.
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"input.scs" 23: Function pPar' is undefined or is used recursively.

#### whitewiz

##### Member level 3
I never used recursively at all. I can not simulate at all.

How do you fix the problem ?

#### pfd001

maybe your model file is not in unix format. you can try the following comands. dos2unix *.scs *.scs

##### Member level 5
it will start working if u copy d design and name it differently...... i just used HIT & TRIAL nd d thing wrked fr me ... dn knw wts cache behind this bt..... hope it helps[]

#### Hunter_BJUT

##### Member level 2
you pdk file path is not correct.

##### Member level 5
Hunter! pls explain in detail

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