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Multi-part path makes cadence hang?

stuso

 Hi there,

i'm finding that my otherwise ok cadence session is fine UNTIL i draw or re-shape a multi-part path. This multpart path is for a guard ring so i suppose it may be relatively complex in that it does have around 4 sub paths and subtectangles for x5 rows of contacts.

I was wondering if this is a known issue. I have known multi-part paths to casue me issues in various versions of cadence in the past, in that cadence would completely stall and not come back. Howeve in this case it does come back alive after 5mins or so.

My current cadence version is: IC5141_ISR200806270515

Thanks

Stu 

 

 

 

Parents

  • Hi Derek, thanks for the indepth reply. I'm finding that my narrower mpp's, say with ONE row of contacts/vias, are ok. The wider ones won't get used as often, so we might be able to live with it. I'll see how much the other engineers complain when they use them. i just did a quick estimate and some of these guard rings have around 15,000 contacts, perhaps this is too excessive for cadence to handle, who knows. 

     

Reply

  • Hi Derek, thanks for the indepth reply. I'm finding that my narrower mpp's, say with ONE row of contacts/vias, are ok. The wider ones won't get used as often, so we might be able to live with it. I'll see how much the other engineers complain when they use them. i just did a quick estimate and some of these guard rings have around 15,000 contacts, perhaps this is too excessive for cadence to handle, who knows. 

     

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