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Hi,I wanted to work on the "MultiVT" libraries in my design, can any one suggest me how to go about this ?1. In normal flow we will just import lib files, is it same in case multvt libs? if yes then how to differentiate?2. how to diffrentiate HVT & RVT cells in the design (ie how to calculate the % of HVT & RVT cells)3. what will be PD Flow(physical design steps)Please suggest.Thanks & Regards,kulprashant
Hi Kulprashant,You really don't have to do anything different. Just load in the .lib of both libraries. The cells should have different names, like INV and INVTH, or INV_HVT and INV_RVT, or something similar. I don't know of an automatic way to get the % of HVT vs RVT, but it should be easy to write a script to parse the netlist or a summary report file. As for the flow, it will be pretty much the same, but check the docs for setOptMode -leakagePowerEffort and set it to what you think is best for your design goals.Hope that helps,- Kari
Along the same lines I have another query. I am trying to set up a multi vt flow as well.For my design, I have low VT and High Vt libraries.For setOpCond and corner specification how do I specify multiple libraries? Currently multiple libs cannot be specified with setOpCond for max and min. LVT lib is called scmetro_cmos10lp_lvt_ss_1p08_125C.libHVT lib is called scmetro_cmos10lp_hvt_ss_1p08_125C.libOperating condition in both is called ss_1p08_125C Thanks and Regards,Sanjay Sunder
Hi Sanjay,Just enter the setOptCond info for one library. The operating condition is the same, so it doesn't matter.- Kari