Versions of the Spectre AMS Designer Simulator

The Spectre AMS Designer simulator supports 64-bit operations on all platforms that are officially supported by Cadence. You must run all software in one mode or the other; you cannot mix modes. For example, if you run xmvlog in 64-bit mode, you must also run the 64-bit versions of xmelab and xmsim.

To run the Spectre AMS Designer simulator in 64-bit mode, do one of the following:

• Set the path variable and the library path environment variable to point to the executable files that enable the software to run in 64-bit mode.

• Use the -64bit command-line option when you run each executable (xmvlog, xmelab, xmsim, or xrun).

  When you use the -64bit command-line option, the software sets the PATH variable and the library path environment variable to run the software in 64-bit mode. Do not use this command-line option when linking the software to 64-bit applications, such as PLI, VPI, or VHPI. Set the path variable and the library path environment variable, instead.

• Set the CDS_AUTO_64BIT environment variable.

  Use the xmbits command, as shown below, to see the bit mode that has been set up to run the software:

  xmbits
64
  The -version command-line option also reports the version of the simulator being used. For example:

  xrun -version
TOOL: xrun(64) 22.03-s001


For additional information, see Running the Simulator in 64-Bit Mode in the Overview of Running the XceliumSimulator book.

Setting the Path Variable to Point to the 64-Bit Version

You can find the 64-bit executables installed at install_dir/tools/bin/64bit.

To set the path variable to point to the 64-bit executables:

• Use one of the following commands (depending on the shell that you are running).

     setenv CDS_AUTO_64BIT ALL
     setenv PATH /xceliumInstallDir/tools/bin:$PATH
     setenv PATH /spectreInstallDir/tools.lnx86/bin:$PATH

Library Path Environment Variable

You need to set the LD_LIBRARY_PATH environment variable before you can use the three-step method to run the simulation. However, setting this path is not required if you are using the xrun command to run the simulation.

• For non-SUSE Linux, set the library path environment variable, as follows:

     setenv LD_LIBRARY_PATH install_dir/tools/lib/64bit:install_dir/tools/lib:${LD_LIBRARY_PATH}

• For SUSE Linux, set the library path environment variable, as follows:

   setenv LD_LIBRARY_PATH install_dir/tools/lib/64bit/SuSE:install_dir/tools/lib/64bit:install_dir/tools/lib/SuSE:install_dir/tools/lib:${LD_LIBRARY_PATH}