Segmentation Violation

[praharshapm]

Hi, I am getting segmentation violation error while executing the rep place_cell_nesterov_place: [INFO] 80pCellArea = -nan [INFO] FillerInit: TotalFillerArea = 821.911865 [INFO] FillerInit: NumFillerCells = -2147483648 [INFO] FillerInit: FillerCellArea = -nan [INFO] FillerInit: FillerCellSize = (-nan, -nan) [ERROR]: during executing: "replace < /openLANE_flow/scripts//replace_gp.tcl |& tee >&@stdout /openLANE_flow/designs/AMUX2_3V_top/runs/19-08_07-19//logs/placement/replace.log" [ERROR]: Last 10 lines: child killed: segmentation violation

[mgwoo]

Hello,

Could you please upload your benchmarks/testcases that generate those errors?

[praharshapm]

I am running a small design for an analog multiplexer using Openlane which uses the OpenROAD flow. I am attaching my verilog files and the def file produced during floorplanning AMUX2_3V.zip

[praharshapm]

Do tell if any other file is required

[mgwoo]

It looks like this bug had patched before. https://github.com/The-OpenROAD-Project/OpenROAD/blob/master/src/replace/src/nesterovBase.cpp#L1160-L1165

Quick question:
Could you specify the version that you're using? You may copy and paste the commit that OpenROAD top-level app prints at the beginning of binary execution.

[praharshapm]

I am using RePlAce Version: 1.0.0

So, basically this error is arising because the design is small? Exactly how can I resolve this issue? where should I include these lines: // when #instances are too small, // extracts average values in whole ranges. if( minIdx == maxIdx ) { minIdx = 0; maxIdx = dxStor.size(); }

[rovinski]

@praharshapm I think the real issue here is that openlane is using an old version of RePlAce. You should go encourage them to use a newer version which contains the fix.

[praharshapm]

okay. Thank you so much.