What is the difference between psynopt and place_opt commands in ICC?

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vterminater

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My confusion is that i think both commands do the same. place_opt : optimizes placement of cells to improve timing, congestion. psynopt : Does incremental optimization of cells to improve timing and congestion. Then what is the difference!!? Is it the way they work? Please help me out on this.
 

cyrax747 said:
psynopt is for further fine tuning of design apart from place_opt
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Place_opt*(works on physical aspect,{placement, buffer insertion, removal})
Psynopt: Incremental Logic Optimization (like synthesis :works on logic)

Is the above right?
This will help me understand the concept behind these commands, also if i can skip place_opt and run only psynopt or vice-versa.
 

Hi,

I think place_opt doesnt do buffer removal,there is separate command for it.
 

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