OCEAN - paramAnalysis causes sim to hang when using modelFile value with swept design variable

Hello!

I am using ICADVM20.1-64b.CUSTISR33.18.

I am trying to run a paramAnalysis (corner sweep) for sweeping process and temperature. An example script is provided below.

I am able to launch the simulation, but after completing the transient analysis, the simulator just hangs. The output in the CLI doesn't change, and I get the 

spinny black and white dot box while hovering over the CLI (see image). I have to CTRL+C to exit out of the hanging sim.

I tried commenting out paramAnalysis("sim_process" ?values list("\"weak\"" "\"nominal\"" "\"strong\""), and the sim hanging issue goes away. The paramAnalysis with just the temperature works fine (and the modelFile set to the "nominal" path as per the original desVar function).

I also noticed that Cadence saves the sim results in a directory that has the double quotes of the swept variable within the directory name itself. I.e., "SIM_RESULTS/sim_process="nominal",sim_temp=-40". I'm guessing that maybe some tool in Cadence hangs because of the quotation marks in the directory name?

I guess one workaround might be to run multiple sims with different process corners in a foreach loop... I would prefer to just have everything use paramAnalysis so I wouldn't need to access the results individually for each corner.

; ############################################################################

; OCEAN script that sets up a paramAnalysis to sweep

; process amd temperature (PT). Process is swept by using a desVar value within

; the modelFile() path

;

; The simulation hangs if the paramAnalysis that sweeps the modelFile is included.

; The simulation completes successively if the paramAnalysis that sweeps sim_process is

; commented out

; ##########################################################################

procedure( sim_paramAnalysis_example()

    let(

         (

           (PROJECT "my_project")

           (ID "my_id")

           (LIBRARY "my_library")

           (CELL "my_cell")

           (VIEW "my_view")

        )

        ; sim setup

        simulator(`spectre)

        hostMode(`local)

        design(LIBRARY CELL VIEW)

       

        ; my variables

        desVar("AVDD" 2)

        desVar("AVSS" 0)

        ; temp, process, and time

        desVar("sim_temp" 27)

        desVar("sim_process" "\"nominal\"")

        desVar("sim_time" 200n)

        analysis('tran ?stop "VAR(\"sim_time\")")

        ; these are defined after design variables definitions

        ; because we use design variable values in these

        temp( "VAR(\"sim_temp\")" )

        modelFile('("$MODEL_LIB_PATH/model.paths.VAR(\"sim_process\").scs" ""))

       

        paramAnalysis("sim_process" ?values list("\"weak\"" "\"nominal\"" "\"strong\"") ; P

            paramAnalysis("sim_temp" ?values list(-40 27 125)) ; T

        )  

        paramRun()

   

    ) ; let

) ; procedure