| # pdgen remove stripes with [WARNING PDN-0200] Removing floating shape: |
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| Tool: Power Distribution Network Generator |
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| Subcategory: Power distribution network issue |
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| ## Conversation |
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| ### titan73 |
| Based on the example at the bottom of https://openroad.readthedocs.io/en/latest/main/src/pdn/README.html.
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| I did the following floorplan with the .def containing the power pins:
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| read_def -floorplan_initialize floor.def
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| set fp_area [ord::get_die_area]
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| initialize_floorplan -die_area $fp_area -core_area $fp_area -site CORECUBRICK
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| add_global_connection -net VDDD -pin_pattern {^VDDD$} -power
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| add_global_connection -net GNDD -pin_pattern {^GNDD$} -ground
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| set_voltage_domain -power VDDD -ground GNDD
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| define_pdn_grid -name "Core"
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| add_pdn_ring -grid "Core" -layers {metal4B alucap} -widths 5.0 -spacings 2.0 -core_offsets 4.5 -connect_to_pads
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| add_pdn_stripe -followpins -layer metal1 -extend_to_core_ring
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| add_pdn_stripe -layer metal4B -width 0.48 -pitch 56.0 -offset 2.0 -extend_to_core_ring
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| add_pdn_stripe -layer alucap -width 1.40 -pitch 40.0 -offset 2.0 -extend_to_core_ring
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| add_pdn_connect -layers {metal4B alucap}
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| add_pdn_connect -layers {alucap metal4B}
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| pdngen
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| The sroutes and the ring are created but not the stripes and I get the the warnings:
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| [WARNING PDN-0200] Removing floating shape: GNDD (1.7600, -9.5000) - (2.2400, 821.3000) on metal4B
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| [WARNING PDN-0200] Removing floating shape: VDDD (29.7600, -16.5000) - (30.2400, 828.3000) on metal4B
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| Is there something more to do to connect these shapes? |
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| ### titan73 |
| Also note that the related power pins imported the from .def are removed. |
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| ### maliberty |
| Can you provide a test case? Its hard to say much from just the output |
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