Command

cicsim --no-color srun --help

Usage: cicsim srun [OPTIONS] TESTBENCH [CORNER]...

  Run a spectre simulation of TESTBENCH

Options:
  --oformat TEXT    spectre
  --run / --no-run  Run simulator
  --ocn / --no-ocn  Run ocean
  --help            Show this message and exit.

Description

srun runs a Spectre simulation. It works similarly to the run command but targets the Cadence Spectre simulator instead of ngspice.

Requirements

  • Cadence Spectre must be installed and available in your PATH
  • An optional OCEAN script (.ocn) can be used for post-processing

Corner handling

Corners work the same way as for run. The cicsim.yaml file defines the mapping from corner names to Spectre include statements:

corner:
  Sch: 'include "../MYDESIGN_schematic.scs"'
  Lay: 'include "../MYDESIGN_layout.scs"'
  Tt: 'include "/path/to/models" section=tt'

Usage

Run a typical corner:

cicsim srun tran Sch Tt Vt

Generate the spice file without running:

cicsim srun tran Sch Tt Vt --no-run

Skip OCEAN post-processing:

cicsim srun tran Sch Tt Vt --no-ocn

OCEAN post-processing

If a <testbench>.ocn file exists (e.g. tran.ocn), srun will execute it with OCEAN after the simulation completes. This is useful for extracting measurements from Spectre PSF results.

Inside the OCEAN script, cicsim provides the variable cicResultsDir which points to the PSF results directory for the current corner.