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VLSI CAD Flow: Logic Synthesis, Placement and Routing 6.375 ...

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Adding Positioning Constraints<br />

• Partitioning gives us two<br />

new “center of gravity”<br />

constraints<br />

• Simply update constraint<br />

matrix<br />

• Still a single global<br />

optimization problem<br />

• Partitioning is not<br />

“absolute”<br />

• modules can migrate<br />

back during optimization<br />

• may need to re-partition

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