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The-OpenROAD-Project / OpenSTA

OpenSTA engine
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Support with insert_buffer #57

Closed nickson-jose closed 3 years ago

nickson-jose commented 3 years ago

Relatively new to OpenSTA I want to insert a buffer between net 03412 and load pin 33464/A2 as shown in below timing report snippet:

    Fanout     Cap    Slew   Delay    Time   Description
-----------------------------------------------------------------------------
                          0.13    0.12    1.28 ^ _33458_/X (sky130_fd_sc_hd__buf_1)

 4             0.01                                     _03412_ (net)
                           0.13    0.00    1.28 ^ _33464_/A2 (sky130_fd_sc_hd__a21o_4)
                           0.01    0.08    1.36 ^ _33464_/X (sky130_fd_sc_hd__a21o_4)

Tried:

% help insert_buffer 
insert_buffer buffer_name buffer_cell net load_pins buffer_out_net_name
% 
% insert_buffer _my_buf_ sky130_fd_sc_hd__buf_4  _03412_  _33464_/A2  _my_net_
invalid command name "insert_buffer_cmd"

Can't really figure out where I'm going wrong. Also couldn't find any reference in the openSTA manual for this command. Any help is appreciated

jjcherry56 commented 3 years ago

You aren't doing anything wrong. I removed the command but left the tcl proc behind. 154dcf00 James Cherry Fri Jun 14 16:52:34 2019 -0700 rm insert_buffer Use the make_instance/make_net/disconnect_pin/connect_pin primitives which are maybe less convenient but more flexible.