How to avoid read 'lib' in HSIM using alter command

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Duckhwan Kim

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Hi. I am trying to check functionality of my digital circuit for multiple supply voltage/frequency domains using HSIM, Synopsys.

Therefore, I use .alter command as like below:

Code:
.lib 'my.lib'

x1 test_ckt
.param v1 = 1
vvdd vdd 0 v1
.tran 1p 10n

.alter
.param v1 = 1.1...

The problem is that it reads 'my.lib' in each re-run process in .alter command and it takes a lot of my simulation time.

I know I can use 'sweep data' command in tran simulation in HSIM but I prefer .alter command because it generates multiple .mt files
(When I use sweep, it generates a single mt file and it contains all measurement data for different parameters).

Is there any way to turn-off reading .lib and keep previous lib in .alter command in HSIM?

Thanks in advance.
 

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