Hi Prasanna, Originally posted in cdnusers.org by tailend
Congestion map from NanoRoute can be saved as a REF file and imported back into Encounter. I have enclosed the
following section from NanoRoute Reference Manual :
[b][i]pdi save_design [view_name] [-ref my_design.ref][/i][/b]
Saves the design onto disk. The design must have been imported with pdi import_design or created by performing routing.
[b][i]view_name[/i][/b] - Specifies the view name of the design.
If you do not specify a view name, NanoRoute
uses the last view opened.
[b]-ref -my_design.ref[/b] [/i] Saves an ASCII format representation of the congestion map that Encounter can read.
The following command saves the design to an ASCII file named routed.ref.
[i] pdi save_design -ref routed.ref[/i]
The .ref file lists each global routing cell (gcell) on a separate line, in the following format:
gcell_1 (llx, lly) (x_tracks_used / x_tracks_total, y_tracks_used / y_tracks_total)
gcell_2 (llx, lly) (x_tracks_used / x_tracks_total, y_tracks_used / y_tracks_total)
GRC(2504.28, 19.68) (5/29, 10/20)
GRC(24.6, -0.08) (1/0) (1/0, 1/19)[i][/i]