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retime failed with error msg "Failed on find_unique_design"

archive

I have set attribute retime to a certain design

set_attr retime 1 [find / -subdesign some_design]

after elaboration. However I get following error message after the generic synthesis:

Failed on find_unique_design

The script is structured as follows;
1. read libraries and set library
2. read don't use cells
3. read_hdl
4. elaborate
5. read constraints
6. set costs groups/path groups
7. set_attr retime true [find / -subdesign *]
7. run generic synthesis
8. run technology mapping etc...

I have set this attribute to only one subdesign. find_unique_design is an internal command I think.

Do you have any idea?


Originally posted in cdnusers.org by sporadic crash
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  • archive

    Hi Sporadic Crash,

    I suggest checking your directories after elaboration. Sounds like you elaborated more than one design. Also, if I am not mistaken, you do not need to do
    > set_attr retime true [find / -subdesign *]
    My understanding is that
    > set_attr retime true [find / -design ]
    is sufficient since the attribute is recursive. I only use subdesign when I specifically only want to retime a particular subdesign/s and nothing else.

    good luck,
    gh-


    Originally posted in cdnusers.org by grasshopper
Reply
  • archive

    Hi Sporadic Crash,

    I suggest checking your directories after elaboration. Sounds like you elaborated more than one design. Also, if I am not mistaken, you do not need to do
    > set_attr retime true [find / -subdesign *]
    My understanding is that
    > set_attr retime true [find / -design ]
    is sufficient since the attribute is recursive. I only use subdesign when I specifically only want to retime a particular subdesign/s and nothing else.

    good luck,
    gh-


    Originally posted in cdnusers.org by grasshopper
Children
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