ICC compiler replace FILL4 with DECAP4

[WTing]

Hi
I study IC compiler a while, but need to edit an old database.
Some specified FILL4's have to be replaced with DECAP4's. (Old DECAP4, DECAP8 must keep the same places as they were)

1. I delete one FILL4 and use "insert_stdcell_filler -cell_with_metal {DECAP4}" . No DECAP4 is filled in the deleted region. why?

2. I copy DECAP4 nearby to the deleted region. Some short happened means the metal 1 in DECAP4 is on the GDS.
I can see correct verilog output(with DECAP4) , but wrong result in GDS file (still with FILL4) . why?
gds out by : "write_stream -format gds -lib_name $project -cells $cell $cell.gds"

why these 2 ways fail ? Is there any other way to replace FILL4?

WenTing

 

[WTing]

Hi
I study IC compiler a while, but need to edit an old database.
Some specified FILL4's have to be replaced with DECAP4's. (Old DECAP4, DECAP8 must keep the same places as they were)

1. I delete one FILL4 and use "insert_stdcell_filler -cell_with_metal {DECAP4}" . No DECAP4 is filled in the deleted region. why?

2. I copy DECAP4 nearby to the deleted region. Some short happened means the metal 1 in DECAP4 is on the GDS.
I can see correct verilog output(with DECAP4) , but wrong result in GDS file (still with FILL4) . why?
gds out by : "write_stream -format gds -lib_name $project -cells $cell $cell.gds"

why these 2 ways fail ? Is there any other way to replace FILL4?

WenTing

problem 2 is fieded. $cell variable not updated.

 

[ThisIsNotSam]

the decap cell does not always has the same properties as a filler cell.

when you ask ICC to insert filler and you pass a decap as parameter, it might not get what you trying to do. in innovus there are separate commands for insert_filler and insert_decap. it might be the same in ICC (I haven't used ICC in decades)