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Forums > Digital IC > Floorplanning, Place and route

Subject: Save congestion maps ?
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Prasanna
Posts: 0
Online: User is Offline
2/02/2005 4:47 PM  
Hi all,

Is it possible to save congestion maps in any format (not screendumps) ?
I wish to load up the congestion map independent of the Nanoroute tool and view later..However, if this is not possible, I wish to load up only the congestion maps through Nanoroute (without performing the global route again).

Any help appreciated,
Cheers,
Prasanna
tailend
Posts: 0
Online: User is Offline
2/02/2005 7:42 PM  
Hi Prasanna,

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.

Argument

[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.
[i]
[b]-ref -my_design.ref[/b] [/i] Saves an ASCII format representation of the congestion map that Encounter can read.

Example

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)

For example,

GRC(2504.28, 19.68) (5/29, 10/20)
GRC(24.6, -0.08) (1/0) (1/0, 1/19)[i][/i]
--------------------------------

Cheers!
-tailend
Prasanna
Posts: 0
Online: User is Offline
2/03/2005 6:49 PM  
Hi tailend,

Thanks for your response, that was helpful !

Cheers,
Prasanna
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Forums > Digital IC > Floorplanning, Place and route > Save congestion maps ?


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