General Description: When I open a large design (such as one created using System Generator), Project Navigator is slow to open/appears to hang. The HDL parser (JHDPARSE) takes a long time to determine the hierarchy of large designs.
If the available memory is exceeded during the parsing process, Project Navigator crashes.
The HDL parse requires a large software overhead. To work around this, synthesize the design outside the ISE flow, using XFLOW or a third-party synthesis tool.
For instructions on synthesizing using XST with XFLOW, please see: