Spectre Monte-Carlo simulation without ADE-XL license

The monte carlo integration is available in ADE XL or in ADE Explorer/Assembler. ADE L is an older product that is in "sunset" mode, and both ADE L and XL are replaced by ADE Explorer/Assembler. So there is a natural upgrade path to go from ADE L to Explorer - you should contact your account team to see if you can arrange that upgrade.

Explorer allows you to run Monte Carlo and Corners from the environment, and it has an ADE-L like user interface so it's easy to adopt.

Regards,

Andrew.

I also had the same situation, so, probably, it will be interesting for others.
You can use the ADE-L to create the netlist first (Simulation -> Netlist -> Create), where you can setup all the simulations parameters. Use the mc corner from your PDK.
Then, you can simply go to simulation/YOUR_TB/Spectre/schematic/netlist, open the input.scs file and wrap your simulation statement with monte-carlo statement. For example:

mc1 montecarlo variations=mismatch seed=1234 numruns=200 savefamilyplots=yes {
tran tran stop ….
}

You also can append the correlate statements, if you want to have some devices in your netlist to be correlated:

statistics {
correlate dev=[DEV1 DEV2] cc=0.75
}

Now, you can run the simulation:

./runSimulation

After simulation finishes, you can plot your simulation results by clicking on "Plot Outputs" button in ADE-L.
If you change something in your design, and recreate netlist, you should correct your input.scs file again!

Upd. It exist also a more elegant solution. Once you understand what simulation you want to run in Monte-Carlo loop, you can create an additional *.scs file containing only the simulation statements. Then you can include this file among your model files in ADE-L. Now, deselect all analyses in Analyses tab and press Run button. The Monte-Carlo simulation will run, now it is even possible to recreate the netlist without making anything with the input.scs file.