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Dynamic Power Analysis

Meghz
I am running dynamic power analysis on my design . When the set_power_analysis_mode -method dynamic_vectorbased is set and VCD file is given , report_power command should generate the dynamic current data files (ptiavg files) for all the PG nets. However , when I run the report_power command it is not generating the ptiavg files for the power nets of the macros.In static power analysis the ptiavg files for all the nets are being generated. Also  the rest of the dynamic power analysis script remaining the same, if I change the set_power_analysis_mode -method to static, the static current data files are being generated for all the nets. What could be the possible reason for the dynamic current files of macros not being generated?

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