Automatic Placement Report

After running the Virtuoso device-level automatic placer, a placement report is displayed in the CIW.

The placement report includes the following placement information:

Title	Description
`Area`	Product of `Width` and `Height` values. The area is calculated in `dbu`, converted to user units, and then rounded off to two decimal places.
`Width`	Width of the PR boundary after running the placer.
`Height`	Height of the PR boundary after running the placer. The width and height values are measured from pins and instances and could be smaller or larger than the PR boundary.
`Aspect Ratio`	Width-to-height ratio of the PR boundary.
`RowUtil`	Percentage of row area that is filled with top-level instances, Modgens, and other figGroups. If a Modgen has a gap, the entire Modgen width is considered as occupied.
`CoreArea`	Area occupied only by instances. The value excludes pins.
`CoreWidth`	Width of the area occupied only by instances.
`CoreHeight`	Height of the area occupied only by instances.
`WireLength`	Total wire length achieved after running the placer. The value is measured using the half-perimeter distance model in which half of the perimeter of the bbox is considered the approximate wire length.
`Violations`	Number of violations reported during placement.
`Spacing`	Number of spacing violations that have caused DRC errors.
`Overlap`	Number of overlaps that have caused DRC errors.
`Constraint`	Number of constraint violations.

The lower left of the PR boundary is always included when measuring the width, height, area, coreWidth, coreHeight, and coreArea values.