Need help on NanoRouter issue (urgent!!!)

[david_zheng]

Need help on NanoRouter(urgent!!!)

Dear all,

I need your help on routing in NanoRouter,please!
In the past few days,I spend a lot of time on routing,I found a stange scenario shown below.
In the same direction,router always skip at least one track when it routing the next wire (in the same metal),it means that at least half of tracks will not be used for routing,it results in a bad routing result and very long run time.I checked the pitch values defined in tech lef,and verify track in encounter,they are matched.
How can I slove this issue,can anyone help on it?

Thanks and regard,
david

 

[rca]

you do not apply double space constraints on some nets?

 

[david_zheng]

The problem solved!
There is a bug in the SPACINGTABLE rule definition in the Tech LEF file,after I updated this rule for each metal as below, routing become so easy:
From: SPACINGTABLE PARALLELRUNLENGTH 0 0.5 1.5 WIDTH 0.1 0.1 0.1 0.1 WIDTH 0.5 0.1 0.16 0.16 WIDTH 2.8 0.1 0.16 0.3 ;
To: SPACINGTABLE PARALLELRUNLENGTH 0 0.5 1.5 WIDTH 0.0 0.1 0.1 0.1 WIDTH 0.5 0.1 0.16 0.16 WIDTH 2.8 0.1 0.16 0.3 ;