Hello all,

I am trying to finish my course project by spectre. I am trying to run Monte Carlo simulation through my netlist, and measure the propagation delay across a gate.  I search through all the accessible spectre documents about Monte Carlo simulation,  they all do measurement through oceanEval statement.  

export somesignal=oceanEval("some expression")

I couldn't find any documentation on how oceanEval was supposed to be used, and the some expression in the brackets looked like it was from spectreMDL, so my code ended up looking like:

m1 montecarlo saveprocessparams=yes processscalarfile="../process.dat"  
+        numruns=30 variations=process seed=10{      
        dcop1 dc
        tran1 tran start=0 stop=0.2ns step=0.01ns
        export nor1in1=oceanEval("deltax(sig1=nor1in1, sig2=nor1out, dir1='rise, n1=1, start1=0, thresh1=0.75, dir2='fall, n2=1, start2=0, thresh2=0.75)")        
}

However, when I type "spectre myinputfile" in the terminal, some errors display in the terminal like:

Error found by spectre during circuit read-in.
   "gatesizing.spi" 105: Function `oceaneval' is undefined or is used
       recursively.
"gatesizing.spi" 105: VCVS (export) needs 4 nodes (0 given).


How can I measure the propagation delay in a Monte Carlo simulation without going through the gui? All I need are the values; I'll run the rest through Matlab.

Thanks!
Jerry