The System on a Chip Company ® LSI LOGIC LSI LOGIC 2/11/ Experiences and Progress with OpenAccess at LSI OpenAccess Interoperability Workshop March 3, 2003 Donald Amundson, Khosro Khakzadi, Scott Peterson LSI Logic

The System on a Chip Company ® LSI LOGIC LSI LOGIC 2/11/ LSI OpenAccess 2002 Projects  GDS Importer Translates GDS -> OpenAccess  Viewer Graphical viewer of physical design data  Python for OpenAccess Python extensions for using the OpenAccess API Donated to Si2, available off OpenEDA.org

The System on a Chip Company ® LSI LOGIC LSI LOGIC 2/11/ Development Environment  Multiple Platforms Windows 2000 Primary Development SunOS 5.8 Primary Target Linux Future Target  Single Source Code Internal CVS Repository wxWindows Graphics Package

The System on a Chip Company ® LSI LOGIC LSI LOGIC 2/11/ GDS Importer Testcases SmallMediumLarge GDS File Size534 KB98MB212MB # of Cells OA Disk Space215 KB33 MB67 MB # Object in Top Cell ,586461,379 # Insts in Top Cell ,667201,715

The System on a Chip Company ® LSI LOGIC LSI LOGIC 2/11/ Viewer Summary  Generic Platform for adding viewer Three initial types: Command, DataBase, File  Tcl based command language All actions are scriptable All menus and toolbars configurable

The System on a Chip Company ® LSI LOGIC LSI LOGIC 2/11/ Viewer Command Summary  Full set of Zoom and Pan commands  Select and Report commands Implemented with OA Extensions  Display Attribute commands Color and Fill patterns Data Persistently saved using OA Extensions  Multiple window support

The System on a Chip Company ® LSI LOGIC LSI LOGIC 2/11/ Viewer Performance Laptop PC Desktop PC Sun Workstation Machine1.2 Ghz1.7 Ghz450 Mhz Ultra-60 # Drawn Objects per second 51,000136,00045,000 # Inst Selected per second 382,000365,000105,000 # Rects Select per second 641,000543,000165,000  Performance based on Medium testcase Used wall time measurements on idle machine

The System on a Chip Company ® LSI LOGIC LSI LOGIC 2/11/ Python for OpenAccess  The API is large Need to auto-generate the extension code  Goals Each OA type be a real Python type Generate code directly from header files Reduce maintainance with code updates Python API to match C++ API as much as possible API Header Files Hint Information Code Generator Extension Code

The System on a Chip Company ® LSI LOGIC LSI LOGIC 2/11/ Python for OpenAccess  Almost the entire OA API is available Each OA class is a Python Type OA member functions are Python members Templated Extension objects Virtual functions on oaRegionQuery and Callback classes  API enhancements oaIter is translated to a Python iterator type.  Details of the mapping are in the documentation

The System on a Chip Company ® LSI LOGIC LSI LOGIC 2/11/ LSI OpenAccess 2003  OpenAccess V2 Updated Python Interface Additional capability Documentation oaTracer application Converting internal translators Verilog In/Out GDS2 In/Out Adding additional features to Graphical Viewer Printing / Plotting capability Usability features Pop-up help messages

The System on a Chip Company ® LSI LOGIC LSI LOGIC 2/11/ Summary  Future Work Convert additional internal translators Extend Graphical Viewer capabilities Edit features Embedded Python interface