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PT- PX power calculations

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vlsi2013

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Hi,

I am using PT PX to find difference in power values while feeding different inputs to a single-processor. The flow used --> VCD generation using modelsim --> PT PX power calculator.

The resulting power in both the cases is same and we are getting following warning in the log file while reading vcd file as,


---->>
read_vcd "base.vcd" -strip_path "/testb/resil_up/cpu"^M
Information: Checked out license 'PrimeTime-PX' (PT-019)

======================================================================
Summary:
Total number of nets = 26737
Number of annotated nets = 189 (0.71%)
Total number of leaf cells = 24142
Number of fully annotated leaf cells = 66 (0.27%)
======================================================================

Warning: VCD coverage on the design is too small. Power may be underestimated. (PWR-007)

---->>

I tried by making elongating the time duration of VCS generation to cover more design but no luck.

Has anyone faced similar problems and what is the recommended solution ?

Thanks & Best Regards
 

RCircuit

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Is the vcd file generates on the net list? If yes, check strip_path.
 

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