I am doing a static rail analysis for a small design. I am getting a following error and warning in-spite of properly defining the proper power pin, power net, ground pin and ground net:
Analyze Rail Settings: Temp directory: /tmp/ssv_tmpdir_161280_bh1R11 Output directory: /home/suhas/Desktop/genus_invs_des/staticRailResults Run directory: /home/suhas/Desktop/genus_invs_des/staticRailResults/ALL_0C_avg_8/Begin Merging Power Grid for net VSS** WARN: (VOLTUS_RAIL-4022): The cell type "macro" didn't match any cell in cell libraries.** WARN: (VOLTUS_RAIL-4022): The cell type "io" didn't match any cell in cell libraries.** WARN: (VOLTUS_RAIL-4016): No interface node connections present in top-level PGDB.Merging cell power views for net VSS Merged power views for 0 cells Processed 0 cell internal tap current sources.Processed 0 cell internal resistors.EM: 0 IR: 0 Early: 0 Tech: 0 Unused: 1
** WARN: (VOLTUS_RAIL-4065): The following 1 cells do not have connection fromthe power pins to the global grid VSS, no powergrid library will be used.ANDEnded Merging Power Grid for net VSS: (cpu=0:00:01, real=0:00:02, mem(process/total)=40.28MB/758.92MB)
Merge Grid Statistics:
VSS: 0 cells EM: 0 IR: 0 Early: 0 Tech: 0 Unused: 1
Begin Merging Power Grid for net VDD** WARN: (VOLTUS_RAIL-4076): The net VDD is marked as incomplete net
** WARN: (VOLTUS_RAIL-2091): Found incomplete net, VSS, it will be skipped in the analysis and the report.** WARN: (VOLTUS_RAIL-2091): Found incomplete net, VDD, it will be skipped in the analysis and the report.** ERROR: (VOLTUS_RAIL-1259): Failed to run domain based rail analysis - required at least one power net and one ground net. Only 0 nets () found, the other nets (VSS, VDD) are incomplete.*** Error: In processing command scriptRail Analysis failed.
1 error was found while processing the file /tmp/ssv_tmpdir_161280_bh1R11/voltus_rail_161280.cmd
Rail Analysis Statistics:Warning messages: 5Error messages: 2
Rail Analysis is unsuccessful due to errors.
Finished Rail Analysis at 12:29:33 09/18/2017 (cpu=0:00:02, real=0:00:05, peak mem=758.92MB)Current Voltus IC Power Integrity Solution resource usage: (total cpu=0:00:21, real=0:01:10, mem=718.73MB)voltus_rail exited unsuccessfully.**ERROR: (PRL-387): "Rail Analysis" failed to finish successfully.
Please let me know where I am going wrong, the design is a small AND gate power and rail analysis.
From your log file, it seems that there is no Power Grid View or a Technology View read in? For Static Rail Analysis, a Technology View is the minimum requirement for it to run successfully but for better results, you also need the Power Grid View for the standard cells (as I saw you were using an AND gate).