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ICC -- ignore routing nets

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sophiefans

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hello everybody,

There are some nets which cause lots of false violation. So i just want to ignore routing on these nets Or ignore DRC check on these nets. You know with these false violation the speed will be slow and slow. Do you know the setting?

I mean when you want to route a net group, you can use "route_zrt_group". But when you do not want a net Group be routed, how to set?


Thanks

Added after 1 hours 50 minutes:

I have a method that just get all the nets , and remove the nets which i don't want route from the total nets. Then run the net group left.

It's one method, do you have other way to do this thing?
 

One ideea would be to define a routing rule for those nets!

define_routing_rule -default_reference_rule freeze_nets_rule
set_net_routing_rule -rule freeze_nets_rule -reroute freeze [get_net NETS_COLLECTION]


I would not ignore the DRC reported by the tool; if you define a rule for this and ignore them you might miss some real errors!
 

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    sophiefans

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dementu666 said:
One ideea would be to define a routing rule for those nets!

define_routing_rule -default_reference_rule freeze_nets_rule
set_net_routing_rule -rule freeze_nets_rule -reroute freeze [get_net NETS_COLLECTION]


I would not ignore the DRC reported by the tool; if you define a rule for this and ignore them you might miss some real errors!
Click to expand...


Hi dementu666,

Thanks for your replay, before i see your reply i've tried in this way, and tools run time is shorter than the method i meantioned above. I know i will miss the real violation by doing this. But i am sure these net will be routed by hand with special layer. So in this step, i just don't need to care it. All in all, thanks a lot for your reply.
 

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