@@socialogic9777 Yes, now it makes sense. So, the NDRs will consume more routing tracks or resources whereas normal nets will consume less tracks. Thank you.
@@JagatK_ NDRs will cause congestion issues - a clock trunk can be NDR. However, overflow is caused with normal nets. In this case we will chose to perform net detours which can effect timing on critical nets.
Every concept like floorplanning, pin assignment and placement has been converted into a problem statement described with mathematical conjectures, probably to make it problem solvable by VLSI CAD tools. How do we do this?
Placement congestion happens when there is a congestion of modules (std cells, gates, etc). Routing congestion happens when there is a congestion of the wires or the routes.
very helpful! thank you
He mentions that the routing consumed 2 tracks or 3 tracks. What is meant by a track here ?
I think by track he means, the number of routing metal layers available.
@@socialogic9777 No, that can’t be right. Because number of metal layers are usually quite high, at least > 15 or so.
@@JagatK_ ruclips.net/video/1Y-rQCs3ZNE/видео.html.
Go to 3:30
@@socialogic9777 Yes, now it makes sense. So, the NDRs will consume more routing tracks or resources whereas normal nets will consume less tracks.
Thank you.
@@JagatK_ NDRs will cause congestion issues - a clock trunk can be NDR. However, overflow is caused with normal nets. In this case we will chose to perform net detours which can effect timing on critical nets.
Every concept like floorplanning, pin assignment and placement has been converted into a problem statement described with mathematical conjectures, probably to make it problem solvable by VLSI CAD tools. How do we do this?
I think there are many algorithms used by those tools which helps them automate the placement and routing.
what difference between placement congestion and routing congestion
Placement congestion happens when there is a congestion of modules (std cells, gates, etc).
Routing congestion happens when there is a congestion of the wires or the routes.