[PCB_FORUM] Re: Very Slow Allegro v. 16.3

Hello

We had that problem when rel 16 first came. It turns out, it depended on what constraints you had on the nets and what kind of licenses you had. Cadence was not able to re-produce it because they have all the license features in their licenses. 

What was happening as you do a "slide", Allegro would be trying to "analysis" the net and try and check out a different license feature we didn't have, like SpecctraQuest. Thus the hesitation everytime I routed net or modified a route. I had to give them a copy of our license so they would know what features they must have to try and duplicate the situation. We had to get an local AE out to our site to figure that one out and they were very reluctant to do so. It is especially hard now with all support in India. Doing Livemeeting with the tier 1 and tier 2 support engineers didn't help any. 

Also certain constraints, like the impedance property would do the same things.

I don't know if you situation is the same but I would look at some of the constraints since it sounds you brd file is heavily constrained. Did you try downreving your brd file to rel 16.2 to see if the situation is the same or what new constraints are you using in rel 16.3 that is not in rel 16.2.

Daniel

-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Salberg
Sent: Tuesday, April 05, 2011 11:57 AM
To: Cadence User Group
Subject: [PCB_FORUM] Very Slow Allegro v. 16.3

Hello,
I was wondering if anyone there would have any tricks to speed up Allegro.
I am editing a board with quite a few Constraints in the V.16.3 CM. 
Whenever I slide a trace, move a via or any mod, it hangs up for 30 sec each time.
I have tried changing global shapes params from smooth to rough and even disabled.
Short of turning off On-Line DRC, which I do not want to do.
Many DRC's to clean up.


Mark
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