eco_route

eco_route
[ -set d_setObj | -net {s_netName …} ] 
[ -exclude_net {s_netName …} ] 
[ -exclude_set d_setObj ] 
[ -exclude_type {[power][ground][clock]} 
[ -fix_errors [ true | false ] ] 
[ -pre_route_repair [ true | false ] ] 
[ -remove_violating_fills [ true | false ] ] 
[ -threads i_threads ] 
[ -verbose [ true | false ] ] 

Description

Identifies nets with opens in the target group of nets (in the entire top cellview, in a given set, or in a given list), and completes routing on those nets according to the design rules. By default, this process includes the following steps:

• Pre-ECO route repair
  Resolves existing shorts and spacing violations by removing violating routes and repairing connectivity on the target nets.
• Connectivity update
  Identifies target nets with opens as ECO nets.
• ECO route
  Routes ECO nets identified in the previous step.
• Fix errors
  Resolves existing shorts and spacing violations on the ECO nets.
• Remove violating fill shapes
  Removes fill shapes (floating fill used for metal density correction and connected fill used for power and ground optimization) that cause DRC violations on the ECO nets, and removes gapFill shapes that are no longer physically connected to their respective nets.

During processing, status messages are output to the Transcript area and include the following information:

• The number of pre-route repairs performed
• The number of nets in the design and the number of target nets
• The number of nets changed as a result of ECO routing at each stage.

Arguments

-exclude_net {s_netName …}
	Excludes the named nets from processing.
-exclude_set d_setObj
	Excludes nets in the given set from processing.
-exclude_type {[power][ground][clock]}
	Excludes nets of the specified types from processing.
-fix_errors [ true | false ]
	Runs fix_errors only on nets affected by ECO routing performed by this command. Default: true
-net {s_netName…}	Operates only on nets in the list. If neither -set nor -net is given, all nets in the top cell view with opens are processed.
-pre_route_repair [ true | false ]
	Prepares the design for ECO routing: deletes pre-existing violating routes, updates and repairs connectivity, removes loops and dangles. Default: true
-remove_violating_fills [ true | false ]
	When set true, removes fill shapes that cause DRC violations for ECO nets and removes gapFill shapes that are no longer physically connected to their respective net. Default: false
-set d_setObj	Operates only on nets in the set. If neither -set nor -net is given, all nets in the top cell view with opens are processed.
-threads i_threads	Specifies the number of threads or processors to use in parallel to run this command. By default, if multi-threading has been enabled, the session threads are used, otherwise, one processor is used.
-verbose [ true | false ]
	When set true, outputs additional information, listing the nets that are modified at each stage of ECO routing.

Examples

The following example routes nets in the selected set that have opens.

eco_route -set [get_selection_set]

Related Topics

ECO Route Commands

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