Cross-hierarchy interconnect adjustment for power recovery

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United States of America Patent

PATENT NO 9684757
SERIAL NO

15378404

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Abstract

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Embodiments relate to cross-hierarchy interconnect adjustment. An aspect includes receiving chip layout data corresponding to a chip design, wherein a first portion of a metal stack of the chip design is assigned to a first hierarchy and a second portion of the metal stack is assigned to a second hierarchy based on a contract between the first and second hierarchy. Another aspect includes determining an unused portion of the first portion of the metal stack. Another aspect includes moving an interconnect of the second hierarchy from the second portion of the metal stack that is assigned to the second hierarchy to the unused portion of the first portion of the metal stack in the chip layout data. Another aspect includes performing power recovery on the chip layout data after moving the interconnect based on an amount of slack margin generated in the chip design by the moving of the interconnect.

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Patent Owner(s)

Patent OwnerAddress
INTERNATIONAL BUSINESS MACHINES CORPORATIONNEW ORCHARD ROAD ARMONK NY 10504

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berry, Christopher J Hudson, US 82 1121
Nigaglioni, Ricardo H Austin, US 18 33
Qian, Haifeng White Plains, US 33 265
Saha, Sourav Kolkata, IN 84 231

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