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Specctra Router very slow opening a design

Hi

Allegro PCB Router 15.6
Win-XP Pro and Win 2k
Fast CPU with lots of RAM

We have a design with 4000 comps, 300 nets, 12 layers, 90% routed.

It takes 40 mins to load the dsn file into the Router. (It hangs after the "# Did File Name" line.) It should take 2-3 mins max.

Has anyone any ideas before I submit the design to Cadence?

Cheers,
RIchard

Originally posted in cdnusers.org by Richard Moffat

archive over 19 years ago

Are you using Dynamic planes ? are they in Smooth or Rough mode ?

In your stackup change the Plane type to "Negative" and import back into the Router this should then load in minutes, then when you bring the design back into Allegro change the Stackup back to Positive.

Originally posted in cdnusers.org by rbennett
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archive over 19 years ago

Are you working through a network or in local?
May influence if many disk access (allegro is improved if database are located on local disc because of... journal permanent writing)

Just an idea...

Originally posted in cdnusers.org by jcteyssier
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archive over 19 years ago

There is currently a problem that causes Specctra(The Router) to open very slowly if you have many diff pairs that go thru Constraint Areas/Regions. The reason for the slow down is because of the region warning message that is is issued for each checked wire in a net. This problem only occurs on Windows machines. Apparently Win32 is much slower on output than Unix and that's why this is a Win problem only. The PCR for this problem is 4003707.

Randy

Originally posted in cdnusers.org by rb
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