Challenge 3 : Core width/height calculation
Hi All,
Challenge to test your Floorplan concepts.
what will be Core height and width as a output of below command ?
initialize_floorplan -boundary {{0 0}{10 10.01}} -core_offset "0.624 1.014 0.624 1.014"
Please share your views in comment.
If you need help to revise concept, refer floorplan guide : Mastering Floorplanning: A Comprehensive Step-by-Step Guide"
Core width = 8.752 units
ReplyDeleteCore height = 7.982 units
Afroz, Thank you for being first one to share your views here...
DeleteHowever this is not right answer... Please think what are you missing and try to come up with updated numbers.
As per my calculation Core height should be 10.01/0.169 = 59.23 so , height would be 0.169*59(We have to consider integer)= 9.971, but i am not able to get width.
DeleteTajes,
DeleteYes. You are in right direction.
Just think how did you get 0.169. you will get answer to your question.
Core height - 10.01
DeleteCore width - 10
Width - 0
ReplyDeleteHeight - 0 .!!!
Varshith,
DeleteAnswer is not 0.
Could you please explain your views here..how come you arrived with 0 width and height?
Varshith,
DeletePlease show your calculation.
This comment has been removed by the author.
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteCore Width = 9.88 units, Core Height = 8.36 units
ReplyDeleteThank you Saisrujana for sharing your views...
DeleteBefore commenting on your answer, please share your calculations how mentioned width/height numbers are arrived.
Site width: 0.152 units
DeleteSite height: 1.672 units
Calculate how many full sites fit in each direction:
⌊10.00 / 0.152⌋ = 65 sites horizontally
→ Actual width = 65 × 0.152 = 9.88 units
⌊10.01 / 1.672⌋ = 5 sites vertically
→ Actual height = 5 × 1.672 = 8.36 units
That makes the answer to be as follows:
Core Width = 9.88 units, Core Height = 8.36 units
Here are the calculations, thanks!
DeleteThank you Saisrujana for quick response... (No need comment as anonymous 😀)
DeleteCould you please explain how value of site height and width is arrived?
Hi Jignesh, I got the site width and site height directly from the tool using the `report_site` command
DeleteAppreciate your efforts Saisrujana....
DeleteFyi.. please note that site height and width is not same for all technology nodes.
Please refer below 👇 blog to revise Floorplan terminology:
https://physical-design-asic.blogspot.com/2025/07/floorplan-basics-learn-terms-without.html
Got it, thanks for pointing that out and for sharing the blog link - it’s very informative!
DeleteThe core width is the boundary width minus the left and right core offsets:
ReplyDeleteCore Width = 10 - 0.624 - 0.624 = 8.752 units
The core height is the boundary height minus the top and bottom core offsets:
Core Height = 10.01 - 1.014 - 1.014 = 7.982 units
Hi Rithvej,
DeletePlease check the blog post link mentioned at the end of current post.
It will help to revise Floorplan concepts.
I am sure you will get correct answer then.
Rithvej,
DeleteThere is two side core2die so need to update your formula