[PCB_FORUM] Re: [SPAM] Re: Speeding up Allegro

I agree that it is easier to find the un-connected pins with
a rats line.

But, I try to get it down to some managable level before
removing the NO_RAT. I'll hi-lite the voltage net and
scan around for missing pins.

There is also a skill routine HL_NPE which highlights the
pins with No pin escapes. I'll zoom way out and run the skill
and use the globle window to help locate the pins.

You can also turn off all graphical layers and then turn on the rats.
This at least helps locate the pins quickly.

Hope this helps, Good luck.

Dave

J Wages wrote:
Well, I am at the point where I need to find which power nets, the nets which I had NO_RAT=TRUE property on before, and it's a lot easier to see them when you can hi-lite the rats nets. Thanx anyways. Jim S. Wages / SR. PCB Layout Designer: Cary, NC - H: 919-466-1596 Cell: 919-484-2963 
    -----Original Message-----
    From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
    [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Dave Seymour
    Sent: Friday, February 16, 2007 10:31 AM
    To: icu-pcb-forum@xxxxxxxxxxxxx
    Subject: [SPAM] [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>
    Sent by: icu-pcb-forum-bounce@xxxxxxxxxxxxx

    02/16/2007 09:59 AM
    Please respond to
    icu-pcb-forum@xxxxxxxxxxxxx


        
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        [PCB_FORUM] Speeding up Allegro



        





    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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Dave Seymour, CID+
Catapult Communications Inc.
800 Perimeter Park Dr, Suite A
Morrisville, NC 27560

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