Can some one be able to explain, the fundamental differences between PLE,Spatial, & Physical of RC flows and the advantages over the other.
In my View,
PLE, Only requires Cap Table as an additional input, which will be used to estimate the net RC from Cap table instead of LEF.
How is the net length of the wire is calculated in this flow??
Spatial : It assumes PLE inputs + DEF. Documentation mentions It does some Placement of the block and thus minimize the net lengths . How is the Net length of the wire is estimated here.
synthesize -to_mapped -spatial
However, The Above two Flows work Regular base RC License, RTL Compiler Ultra option, spatial option works with the EDI license availability.
Physical : This is Tricky.
It assumes all the inputs of Spatial. Documentation mentions that it does Post-placement Optimizations?
This Flow requires RTL Phys Advanced option to understand the detail placement of the placed cells.
My Question is what happens when i have the only RTL Compiler Ultra (RC200) license along with encounter executable pointed to the tool, and still issue synthesize -to_placed. My understanding, it shouldn't work.
In my flow, the tool tries to check out for the advanced physical license, but failed to check out, yet did some optimization...!
What is the optimization it tried to do ? Did it merely did spatial flow????
I have only issued the command synthesize -to_placed ?? !!
I am very much confused with the documentation ,as it is always never clear :) :)
Please throw some light on this issue.