Loading Spectre FX Options from a Configuration File

Spectre FX can read the simulation configuration files containing a set of options.

You can load configuration files in one of the following ways:

• spectre.cfg configuration file: A predefined file name, spectre.cfg, can be used to create a configuration file. This file can be loaded to set the default options for the simulator. This file is located and automatically read from the following locations:
  • The installation directory <install_dir>/spectre/etc/configs. This file is always read.
  • One of the following locations, in the given order of precedence:
    • Working directory
    • Home directory
    
    Therefore, if a configuration file exists in both the working directory and the home directory, Spectre reads the one from the working directory.
• Any other configuration file: You can also specify the options in a configuration file that can be added using the +config command-line option. If you specify multiple files using multiple +config command-line options, all files are read by Spectre FX. In this way, the original netlist need not be changed for the Spectre FX simulation.
  

  %> spectrefx +config /path/user1.cfg +config /path/user2.cfg -f fsdb +mt=8 top.sp …

If +echooptions is specified at the command line, Spectre FX displays how the configuration files are read. It also displays the options from the configuration files.

Related Topics

Specifying Command-Line Options for Spectre FX

Specifying Spectre FX Options with the options or .option Argument