Update Wire Cost Map #2721
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Update Wire Cost Map #2721
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…wire_cost_map index is target layer
github-actions
bot
added
VPR
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Should definitely do a QoR test to check this isn't slower (hopefully faster). Need one 2D and one 3D QoR test. |
vaughnbetz
requested changes
Sep 13, 2024
|
Titan - 2D |
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3D Titan Other (nightly test 7) |
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Description
Changing the index order in the router lookahead 6D lookup for hopefully improved cache locality on 3D archs.
Router Lookahead
Change wire delay map (6D array) from [from_layer][from_chan][from_seg][to_layer][dx][dy] → [from_layer][to_layer][from_chan][from_seg][dx][dy] to have a better cache locality.