On Friday, 22 August 2008 at 14:04:04 UTC+5:30, AG wrote:
> Hi,
> I want to run a script that runs monteCarlo for N number of runs and
> extract the mean/median/sigma of a few parameters in a file.
> I used the skill script (sourcelink ref no.11026072) , as suggested by
> Andrew.
> On ocean prompt, the following syntax returns true:
> ocean> monteExpr( "avgIvdd" "average(clip(IT(\"/V6/MINUS\") 1n 4n))" )
> ocean> t
> and it returns error for
> ocean> monteExpr( "avgi" "average(clip(i("V6:p") 2n 4n))")
> *Error* lineread/read: syntax error encountered in input
> I still use both.
> Then I run the analysis
> ocean > monteRun()
> But once the run is complete, still I get the error as follows:
> --------------------------------------------------------------------------------------------------------------
> mc1-003_tran: time = 4.875 ns (97.5 %), step = 1.076 ps
> (21.5 m%)
> Number of accepted tran steps = 2656.
> Initial condition solution time = 1.9 s.
> Intrinsic tran analysis time = 201.52 s.
> Total time required for tran analysis `mc1-003_tran' was 203.71 s (3m
> 23.7s).
> Warning from spectre during transient analysis `mc1-003_tran', during
> Monte
> Carlo analysis `mc1'.
> WARNING (SPECTRE-6006): 12979 warnings suppressed.
>
> mc1-003_finalTimeOP: writing operating point information to rawfile.
> mc1-003_modelParameter: writing model parameter values to rawfile.
> mc1-003_element: writing instance parameter values to rawfile.
> mc1-003_outputParameter: writing output parameter values to rawfile.
> mc1-003_designParamVals: writing netlist parameters to rawfile.
> mc1-003_primitives: writing primitives to rawfile.
> mc1-003_subckts: writing subcircuits to rawfile.
>
> Warning from spectre during Monte Carlo analysis `mc1'.
> WARNING (SPECTRE-16002): Monte Carlo iteration 3 terminated
> prematurely
> because of following error(s):
> Error found by spectre during Monte Carlo analysis `mc1'.
> ERROR (SPECTRE-8003): mc1-003_subckts: Error evaluating ocean
> expression
> `avgIvdd=average(clip(IT("/V6/MINUS") 1n 4n))'.
> -------------------------------------------------------------------------------------------------------------
> Then after lots of warnings, following messege appears
> ---------------------------------------------------------------------------------------------------------------
> **** Run Status for Monte Carlo analysis `mc1' ****
> Monte Carlo iteration 3 failed.
> Total time required for montecarlo analysis `mc1' was 207.19 s (3m
> 27.2s).
> Warning from spectre.
> WARNING (SPECTRE-6006): 12184 warnings suppressed.
> Aggregate audit (10:20:16 AM, Fri Aug 22, 2008):
> Time used: CPU = 212 s (3m 32.1s), elapsed = 228 s (3m 48.0s), util.
> = 93%.
> Time spent in licensing: elapsed = 20 ms.
> Virtual memory used = 182 Mbytes.
> spectre completes with 1 error, 38306 warnings, and 252 notices.
> reading simulation data...
> ...successful.
> Monte Carlo Simulation completed successfully...
> Loading stats.cxt
> Errors with output expressions found:
> "avgIvdd" does not evaluate properly.
> ---------------------------------------------------------------------------------------------------------------
>
> Also, I observe that the skill script seems to be changing the
> resultsDir to different path than what I specify in my ocean-script.
> Another interesting thing is that I can plot the waveforms using
> plot(clip(i("V6:p") 1n 4n)))
> but not using
> plot(clip(IT(\"/V6/MINUS\") 1n 4n)))
> Can somebody please help me how to solve the problem.

Could you post the Ocean script you used for running MC sim? I am unable to run the MC simulation. When I am running my script it is showing MC simulation as unsuccessful