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Routing & Manufacturing grid !

Amr Zahir
In my design, after placement & routing, when I make geometry checks many (RGrid violations) appear. So, what can I do about them and how exactly shall I set the routing and manufacturing grid? I noticed that manufacturing grid is set in technology LEF files, but what about routing grid. Thank you
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  •  The routing grid is set by the pitch of the metal layers in the LEF file, and is sometimes adjusted in the DEF or floorplan. However, a violation of the routing grid is not necessarily a real DRC violation. As long as the metal meets all DRC rules, then it's ok if it's not exactly on the routing grid. Have you run a sign-off DRC to check this? You can turn off the setting in Verify Geometry that checks if shapes are off the routing grid.

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  •  The routing grid is set by the pitch of the metal layers in the LEF file, and is sometimes adjusted in the DEF or floorplan. However, a violation of the routing grid is not necessarily a real DRC violation. As long as the metal meets all DRC rules, then it's ok if it's not exactly on the routing grid. Have you run a sign-off DRC to check this? You can turn off the setting in Verify Geometry that checks if shapes are off the routing grid.

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