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Question on IC Compiler read_def

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victorchin

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Hello everyone,

I am new to IC Compiler. I am seeking some help from all the experts over here :)
I have a question on reading DEF file generated after floorplanning with pads, unplaced cells.

Example DEF COMPONENT section:

- BLOCKA/AND_INST1 AND_SVT + UNPLACED;

When I execute read_def, I am getting the error:

Error: Cannot find hierarchical cell 'BLOCKA' in DEF component ''BLOCKA/AND_INST1' in current design.

I think the tool is trying to find BLOCKA data such as CEL and FRAM,
but is there a way to read the DEF as flat, instead of letting the tool think it needs that hierarchical data?

FYI, prior to read_def, I performed basic command such as setting search_path, link lib, target lib, create_mw_lib etc.
I did not set any specific command related to floorplanning.

Am I missing some commands that will help treat read_def as flat? Thank you.

Regards,
Victor

- - - Updated - - -

Hi,

FYI, in my flow, prior to read_def, I did not read in Verilog netlist. Is this needed?
I assume I don't need this because the DEF already has the cells. But I could be wrong.

Thank you,
Victor
 

loveheihei

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I think you needs to read netlist first, I tried once a time, firstly read_verilog, then read_def, it work well.
 
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