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hierarchical list of instances in a given layout

ajni

Hi 

How to get the lsiting of all the insatnces used in the layout given  database id of the cell without opening the layout in a window.

Thanks

vinutha

Parents
  • Hi Andrew,

    I am working on a script to list the subcells in a library which is not used in any of the top cells we have .
    So, i get a list of all the subcells in a given library and comparing that list in the main cell
    I am using the command


    foreach(cellS layout_names
    instSearch = leSearchHierarchy(cell cell~>bBox 32 "inst" list(list("cell name" "==" cellS)))


    if(instSearch == nil then
    arrraySearch = leSearchHierarchy(cell cell~>bBox 32 "array" list(list("cell name" "==" cellS)))

    if(arrraySearch == nil then
    unUsedCells = append1(unUsedCells cellS)

    );end if
    );end if
    );end foreach

    But for a libray with 2 or 3 cells the time taken to list the unused subcells is less , but for a lib with more than 50 top cells and 100's of subcells it is taking lot of time.
    just because i do leSearchHierarchy every time . For the schematic view search i have used list =schGetCellViewListInSearchScope(cell "hierarchy" cell "schematic" "" "read" ) and it is very fast.
    so, i just wanted to check if there is anything i can do to reduce the time taken to search. If i dump the list of instances used in top cell to a file the search becomes very easy.

    Let me know if i am correct.

    Regards
    vinutha
Reply
  • Hi Andrew,

    I am working on a script to list the subcells in a library which is not used in any of the top cells we have .
    So, i get a list of all the subcells in a given library and comparing that list in the main cell
    I am using the command


    foreach(cellS layout_names
    instSearch = leSearchHierarchy(cell cell~>bBox 32 "inst" list(list("cell name" "==" cellS)))


    if(instSearch == nil then
    arrraySearch = leSearchHierarchy(cell cell~>bBox 32 "array" list(list("cell name" "==" cellS)))

    if(arrraySearch == nil then
    unUsedCells = append1(unUsedCells cellS)

    );end if
    );end if
    );end foreach

    But for a libray with 2 or 3 cells the time taken to list the unused subcells is less , but for a lib with more than 50 top cells and 100's of subcells it is taking lot of time.
    just because i do leSearchHierarchy every time . For the schematic view search i have used list =schGetCellViewListInSearchScope(cell "hierarchy" cell "schematic" "" "read" ) and it is very fast.
    so, i just wanted to check if there is anything i can do to reduce the time taken to search. If i dump the list of instances used in top cell to a file the search becomes very easy.

    Let me know if i am correct.

    Regards
    vinutha
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