LayoutEditor packages for all supported platforms can be downloaded from the download page. For several platforms, there are installer packages as well as file packages. If you have full admin right on your system, please use the installer package. The zip/tar.gz file packages can be used without administrator privileges, however, it needs a little bit more system knowledge to run. If a package for your platform does not exist, use the successor platform (e.g. Ubuntu 18.04 64 bit instead of Ubuntu 17.10 64 bit). If that package doesn't run as expected choose an older release of the LayoutEditor. If the maintenance of your license key has expired, download a package released before the maintenance had expired. A list of all releases is here.

Installation on Windows

The general Windows installer package will run on Windows Vista, Windows 7, Windows 10, etc. It will not run on Windows XP. Until release 2ß180129 a package for Windows XP was available. The Windows XP package will also run on Vista and Windows 7. All packages exist for 32 bit systems as well as for 64 bit systems.

All packages will need Microsoft's VCruntime library for the correct C++ version. If it is not present, the installer will install is automatic on the most system. However, on Windows 7 it may fail to detect it. In that case, please install it by hand. Also if you use the zip package, you need to install it manually. The correct version is included in the zip package under 3rd-Party folder. Both Microsoft's VCruntime packages are needed to run the LayoutEditor.

The installer will add an entry for the LayoutEditor in the start menu. For the zip package, you had to start the LayoutEditor with a double click on the LayoutEditor.bat file from the file manager.

with iPDK

OpenAccess can be used on Windows straight away. But some designs require extensions of OpenAccess. e.g. PyCell is a common extension plugin for OpenAccess used in many iPDKs. PyCell has been tested to work with the LayoutEditor, but a proper installation is critical. The support of PyCell had to be enabled in the setup of the LayoutEditor. For a reliable productive use of PyCell we recommend using Linux.


Download the latest PyCell package from the web site of Synopsys and install it at the default location. There may be packages for different Python versions. The packages for Python 2.6 (name py26 by Synopsys) were tested and work fine. The environment setting needs to be adjusted. The PyCell installer could do the required modifications. If you installed an updated version or have two packages installed, make sure that the environment setting only point to the single PyCell package you want to use.

Once PyCell is installed and activated in the LayoutEditor, the "About OpenAccess" dialog within the LayoutEditor must point to the OpenAccess libraries shipped with PyCell:

Windows Subsystem for Linux

The 64 bit Windows package includes the OpenROAD/Yosys tool for an automatic Place&Route flow and a RTL to GDS flow. These tools require the Windows Subsystem for Linux (wsl) on your 64 bit Windows system to be activate. The required steps to do that are:

  • right-click on the Windows start menu and choose "Windows PowerShell (Administrator)"
  • enter: Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux
  • open the Microsoft Store and install "Ubuntu 18.04 LTS" (no costs)
  • start Ubuntu 18.04 LTS, go trough the installation step and call these lines afterwards:
sudo apt-get update
sudo apt-get install libqt5gui5
sudo apt-get install libgomp1
sudo apt-get upgrade

The Windows Subsystem for Linux is only required for the OpenROAD/Yosys tool for an automatic RTL2GDS/Place&Route flow. These installation steps can be skiped if these feature are not required.

Installation on Mac Os X

The latest Application Bundle will run on Mac OS X 10.7 or higher. It is completely 64 bit. No installation required, just move the package to your Application folder and start it.

It is recommended to activate the Secondary Click. It can be used for panning the design or opening a context menu. The activation is done in the System Preferences of your Mac OS X system. On Mac OS X it may be required to change a default setting under: System Preferences -> Security&Privacy -> General -> Allow_applications_downloaded_from: Anywhere to be able to start the LayoutEditor.

with iPDK

OpenAccess is not supported for mac. So there is also no iPDK for Mac Operating Systems. :( If you are a member of you can request a Mac support there. Maybe after enough requests, they will release a Mac OS X version of the OpenAccess library.

Installation on Linux

Packages for plenty of different Linux distributions. It can be installed via a click on it in the file browser in most distribution.

Package build on RHEL6 with all required libraries runs on many modern Linux distributions. To install, extract all files and execute start. With this package Scripting for Python and Ruby may not work on all systems as the required Python/Ruby versions are not present.

On all Linux system, the LayoutEditor can be started from the terminal with the layout command.

with iPDK

PyCell is a popular plug-in extension of the OpenAccess file format published by Synopsys (formerly Ciranova) and used by many iPDKs. The LayoutEditor has been tested to work with this extension. To enable PyCell, enable its option in the setup of the LayoutEditor. A PyCell installation will be detected and the correct OpenAccess version will be used. If a nondefault installation location of PyCell is used, please set the environment CNI_ROOT before starting LayoutEditor. OpenAccess and PyCell will run on all modern Linux systems.


Synopsys provides packages created with different compilers. Package generated with a new compiler than been use by your system may cause problems. So for RHEL package until version 7 and Ubuntu package until version 16.04, please use PyCell installations for gcc48x. Starting with RHEL8 and Ubuntu 18.04 package generated with gcc62 will work. The PyCell installer may cause several error messages on Ubuntu-based systems, nevertheless mostly it is installed correctly. If it is not done, try to set the compiler version manual: export OA_COMPILER="gcc62" before starting the PyCell installer.

After a successful installation and activation inside the LayoutEditor, the "About OpenAccess" dialog inside the LayoutEditor will point to the PyCell installation. Installation problems will be reported inside this dialog as well.