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How to write more efficient skill code for PCell?

richardyuan

I wrote a PCell program for a MEMS project recently. The code imitates virtuoso automatic generated PCell program. It looks lengthy and run very slowly.

How can i make it more effective? 

1. How to retrieve PCell parameters more simply. Here is my let paragraph, looks ugly:

    let((p1_d1 p1_r2 p1_r3 v1_r p1_leaf_style p1_leaf_l p1_leaf_w p1_leaf_hd 

p1_notch_w p1_slot_angle p1_slot_ir p1_slot_or p1_slot p2_notch_angle

p2_notch_ir p2_notch_or p2_notch ang ang0 ang1 angi inita DPI x y i num 

p1 p2 p3 p4 sides

pcInst  pcParameters pcParamProp pcLayer pcPurpose 

) ;local parameters 

(pcLib = (pcCellView~>lib)) 

;Retrieve pCell parameters

(pcParameters = ((pcCellView~>parameters)~>value)) 

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P1_Visible")

)

   )) 

(p1v = (pcParamProp~>value)) ;P1_Visible

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P2_Style")

)

   )) 

(p2s = (pcParamProp~>value)) ;P2_Style

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P1_D1")

)

   )) 

(p1_d1 = (pcParamProp~>value)) ;P1_D1

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P2_D1")

)

   )) 

(p2_d1 = (pcParamProp~>value)) ;P2_D1

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P1_R2")

)

   )) 

(p1_r2 = (pcParamProp~>value)) ;P1_R2

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P2_R2")

)

   )) 

(p2_r2 = (pcParamProp~>value)) ;P2_R2

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P1_R3")

)

   )) 

(p1_r3 = (pcParamProp~>value)) ;P1_R3

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P2_R3")

)

   )) 

(p2_r3 = (pcParamProp~>value)) ;P2_R3

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "V1_R")

)

   )) 

(v1_r = (pcParamProp~>value)) ;V1_R

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "V1_L")

)

   )) 

(v1_l = (pcParamProp~>value)) ;V1_L

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "V3_D")

)

   )) 

(v3_d = (pcParamProp~>value)) ;V3_D

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "V3_SP")

)

   )) 

(v3_sp = (pcParamProp~>value)) ;V3_SP

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "V3_EE")

)

   )) 

(v3_ee = (pcParamProp~>value)) ;V3_EE

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P1_Leaf_Style")

)

   )) 

(p1_leaf_style = (pcParamProp~>value)) ;P1_Leaf_Style

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P1_Leaf_L")

)

   )) 

(p1_leaf_l = (pcParamProp~>value)) ;P1_Leaf_L

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P1_Leaf_W")

)

   )) 

(p1_leaf_w = (pcParamProp~>value)) ;P1_Leaf_W

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P1_Leaf_HD")

)

   )) 

(p1_leaf_hd = (pcParamProp~>value)) ;P1_Leaf_HD

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P1_Notch_W")

)

   )) 

(p1_notch_w = (pcParamProp~>value)) ;P1_Notch_W

(pcParamProp = car(exists(prop pcParameters 

   ((prop~>name) == "P2_Notch_W")

)

   )) 

(p2_notch_w = (pcParamProp~>value)) ;P2_Notch_W

2. How to fill shape A with array of circular shape B efficiently,

    make sure B is inside A and the distance of B edge to A edge should be larger than 3um?

    I tried to use dbCreateEllipse in multiple loops. And it took several minutes to get a final result, seems very inefficient.

Parents
  • richardyuan

    For the second question, I'll create a new post.

    I now think It's no need to use lots of "(pcCellView~>parameters)~>value)"  and "car(exists(...))" in the pCell definition.

    For more efficient coding, can you give any advice on the following?

    pcDefinePCell(list(ddGetObj("TTA") "ycRotate" "layout") 
        (   (p2_r1 float 300.0)     
    (p2_gapl float 280.0)
    (p2_gapa float 70.0)
    (p2_gapb float 25.0)

    (SETS int 20)

        ) 
        let((i x0 div_angle p2_base p2_rect p2_gap yctView
     pcInst  pcParameters pcParamProp pcLayer pcPurpose 
    ) ;local parameters 

    (pcLib = (pcCellView~>lib)) 

    ;Retrieve pCell parameters
    (pcParameters = ((pcCellView~>parameters)~>value)) 
    (pcPurpose = "drawing") 
    div_angle = 360.0/SETS

    (p2_base = dbCreateEllipse(pcCellView 
    list(4 pcPurpose) 
    list(((-p2_r1):(-p2_r1)) (p2_r1:p2_r1))
        )) 

    (p2_rect = dbCreateRect(pcCellView 
    list(64 pcPurpose) 
    list((p2_gapl:(-p2_gapb)) ((p2_gapl + 2*p2_gapa):p2_gapb))
        ))  
    yctView = dbOpenCellViewByType(" TTA " "YCTemp" "layout" "maskLayout" "s")
    p2_gap = dbCopyFig(p2_rect yctView)

    for(i 2 SETS
    dbTransformCellView(yctView 1 div_angle)
    dbCopyFig(p2_gap pcCellView)
    ); for i
    dbClose(yctView)
        ); let
             

    ); Pcell define 

Reply
  • richardyuan

    For the second question, I'll create a new post.

    I now think It's no need to use lots of "(pcCellView~>parameters)~>value)"  and "car(exists(...))" in the pCell definition.

    For more efficient coding, can you give any advice on the following?

    pcDefinePCell(list(ddGetObj("TTA") "ycRotate" "layout") 
        (   (p2_r1 float 300.0)     
    (p2_gapl float 280.0)
    (p2_gapa float 70.0)
    (p2_gapb float 25.0)

    (SETS int 20)

        ) 
        let((i x0 div_angle p2_base p2_rect p2_gap yctView
     pcInst  pcParameters pcParamProp pcLayer pcPurpose 
    ) ;local parameters 

    (pcLib = (pcCellView~>lib)) 

    ;Retrieve pCell parameters
    (pcParameters = ((pcCellView~>parameters)~>value)) 
    (pcPurpose = "drawing") 
    div_angle = 360.0/SETS

    (p2_base = dbCreateEllipse(pcCellView 
    list(4 pcPurpose) 
    list(((-p2_r1):(-p2_r1)) (p2_r1:p2_r1))
        )) 

    (p2_rect = dbCreateRect(pcCellView 
    list(64 pcPurpose) 
    list((p2_gapl:(-p2_gapb)) ((p2_gapl + 2*p2_gapa):p2_gapb))
        ))  
    yctView = dbOpenCellViewByType(" TTA " "YCTemp" "layout" "maskLayout" "s")
    p2_gap = dbCopyFig(p2_rect yctView)

    for(i 2 SETS
    dbTransformCellView(yctView 1 div_angle)
    dbCopyFig(p2_gap pcCellView)
    ); for i
    dbClose(yctView)
        ); let
             

    ); Pcell define 

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