My oscillator not oscillate in hspice [hlp]

Hello
I have written an sp file and tried to simulate it with Hspice. But it doesn't oscillate!
The code is:
I have used a 0.18u technology file for it and included it in the code.
What's the problem?

Before transient analysis, confirm small signal loop gain by ".AC" or ".LSTB" analyses.

https://www.synopsys.com/Tools/Verif...ef_Jun2012.pdf

https://sanjayavasarala.wordpress.co...oks-technique/

Hello Pancho
You wrote:
Can you explain more? Can you give an example?
tnx

Read text book on basic electronic curcuit.