[PCB_FORUM] Re: Speeding up Allegro

Jim,

On power nets with lots of connections,
Add the property NO_RAT.

dave


Marcel Tran wrote:



Jim,
Look for those Nets that were defined as DC nets. You may temporarily remove this property to improve Allegro performance ... (Logic/Identify DC nets/ ....) 

Thanks and Regards,

Marcel Tran C.I.D.
IBM Corp.
Off. 919-254-1014


"J Wages" <jwages@xxxxxxxxx>
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Hi folks,
Quick question and I'm pretty sure I've seen this subject floating around before. Allegro 15.5.1 I'm nearing the end of routing a very large and dense design. I'm down to cleaning up the power signals (3.3v & gnd...etc) and Allegro is draggin' big time. What is the easiest way to reduce the time between mouse clicks when hooking up these large pin count nets? Currently is about 20 seconds minimum between clicks. Change the shapes from dynamic to static? I've turned off the on-line DRC, but that didn't seem to help. I know it's probably something really obvious, but my brain has turned to mush these last couple days. 
Thanx in advance.
Jim S. Wages / SR. PCB Layout Designer: Cary, NC - H: 919-466-1596 Cell: 919-484-2963
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