The SDR Flow in Virtuoso

Before you start working with the SDR solution, ensure that EAD is initialized with an EAD setup file that defines the location of the ICT file and the EAD dataset and the analysis settings. When SDR is run using the setup information, it checks whether the specified EM data source file (EM data file and ICT file) exists and is readable.

The following diagram provides a snapshot of how SDR fits into the layout design flow.

In the SDR flow, the parasitic extraction and electromigration checks happen concurrently while the layout is implemented. In case of a classical flow (without SDR), the electrical impact is unknown until the layout is complete. In simulation-driven routing, during layout implementation, electromigration (EM) constraints are considered, which in turn, decreases the number of iterations.

Related Topics

Introduction to Simulation Driven Routing

Prerequisites for the SDR Flow