Forum Discussion

ZYusu's avatar
ZYusu
Icon for New Contributor rankNew Contributor
7 years ago

How Quartus estimate Routing Hotspots

I am using Quartus Prime 17.1, Cyclone V chip. I am placing similar circuit in several different LABs, need to maintain a very close Routing Hotspots (%) among them. Anyone can help me how Qu...
KhaiChein_Y_Intel's avatar
KhaiChein_Y_Intel
Icon for Regular Contributor rankRegular Contributor
7 years ago

Hi,

The routing is automatically done by the tool where user cannot control it. Unfortunately, we do not have the documentation about the routing algorithm since it is confidential.

Thanks.

ZYusu's avatar
ZYusu
Icon for New Contributor rankNew Contributor
7 years ago

Thanks for your response.

I thing you misunderstanding about what I am asking. It is true that routing done automatically, but we can manage the routing by relocating some circuits/ gates.

Quartus showing Routing Hotspots in percentage (%). In my previous post, it is 83%. One more example of this attached here. It is showing Routing Hotspots of 7%. The fig also showing that only 1 wire (element) out of 28 used there around LAB X7_Y73.

How Quartus estimate (calculate) it to be 7% ?

I think Quartus should provide this information.

In my project, I want to put similar circuit in several LABs. The routing hotspot in those LABs should be similar or very close.