OpenROAD 0.9.0 d03ebfc244
This program is licensed under the BSD-3 license. See the LICENSE file for details. 
Components of this program may be licensed under more restrictive licenses which must be honored.
Error: cannot open '/.openroad'.
Notice 0: Reading LEF file:  /project/openlane/digital_pll/runs/digital_pll/tmp/merged_unpadded.lef
Notice 0:     Created 13 technology layers
Notice 0:     Created 25 technology vias
Notice 0:     Created 438 library cells
Notice 0: Finished LEF file:  /project/openlane/digital_pll/runs/digital_pll/tmp/merged_unpadded.lef
Notice 0: 
Reading DEF file: /project/openlane/digital_pll/runs/digital_pll/results/placement/digital_pll.placement.def
Notice 0: Design: digital_pll
Notice 0:     Created 37 pins.
Notice 0:     Created 588 components and 3491 component-terminals.
Notice 0:     Created 415 nets and 1360 connections.
Notice 0: Finished DEF file: /project/openlane/digital_pll/runs/digital_pll/results/placement/digital_pll.placement.def
[INFO] [PDNG-0016] Power Delivery Network Generator: Generating PDN
[INFO] [PDNG-0016]   config: /project/openlane/digital_pll/pdn.tcl
[INFO] [PDNG-0008] Design Name is digital_pll
[INFO] [PDNG-0009] Reading technology data
[WARN] [PDNG-0018] No macro grid specifications found - no straps added
[INFO] [PDNG-0011] ****** INFO ******
Type: stdcell, grid
    Core Rings
      Layer: met3 -  width: 20.000  spacing: 5.000  core_offset: 20.000 
      Layer: met4 -  width: 20.000  spacing: 5.000  core_offset: 20.000 
    Stdcell Rails
      Layer: met1 -  width: 0.480  pitch: 2.720  offset: 0.000 
    Straps
      Layer: met4 -  width: 1.600  pitch: 50.000  offset: 16.320 
    Connect: {met1 met4} {met3 met4}
[INFO] [PDNG-0012] **** END INFO ****
[INFO] [PDNG-0013] Inserting stdcell grid - grid
[INFO] [PDNG-0015] Writing to database