I am trying to prevent Optimization between a path.
set_dont_touch, works only for the complete net, but not between a begin pin to a End Pin.
Is there any other option to achieve this type ofcontraints?
use below command:
set_false_path -from beginpin -to endpin
That will not work. set_false_path is only to ignore paths for the timing engine and would still add optimization buffer in the path.
I think there is no option availabe to do this. For now only trick, I found is to add Fence. [ running with setOptMode -honorFence true , prevent
addtion of buffer under this region, and hence force encounter to buffer after/outer ]
yes, set_dont_touch would work for the nets.
In my case, for example U1/a is connect with N1 to U2/a, U3/a,U4/a.
I want no optimization buffers only for the path U1/a to U3/a