`FP_PIN_ORDER_CFG` not taken into account

[scorbetta]

Description

The contents from the file marked in FP_PIN_ORDER_CFG are not taken into accounts.

I am using the following:

// config.tcl
set script_dir $::env(DESIGN_DIR)
set ::end(FP_PIN_ORDER_CFG) "$script_dir/pin_order.cfg"
set ::env(FP_SIZING) "absolute"
set ::env(DIE_AREA) "0 0 500 2000"

// pin_order.cfg
#W
IN\[0\]
IN\[1\]
IN\[2\]
IN\[3\]

#E
OUT\[0\]
OUT\[1\]
OUT\[2\]
OUT\[3\]
OUT\[4\]
OUT\[5\]
OUT\[6\]
OUT\[7\]

#N

#S

The design has 4 inputs and 8 outputs. No matter what the contents of the pin_order.cfg, the placement is always random and sub-optimal.

Expected Behavior

I would like to force few pins on some edges of the macro. In my case all IN bits on the West edge and all OUT bits on the East edge.

Environment report

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---

Kernel: Linux v6.5.0-14-generic
Distribution: centos 7
Python: v3.6.8 (OK)
OpenLane Git Version: d054702b2cce04761cc2bc598f6b95c9d8ca7c6c
pip: INSTALLED
python-venv: INSTALLED
---
PDK Version Verification Status: OK
---
Git Log (Last 3 Commits)

d054702 2023-07-19T16:09:15+03:00 remove `unset_propagated_clock` (#1908) - passant5 -  (grafted, HEAD, tag: 2023.07.19)
---
Git Remotes

origin  https://github.com/The-OpenROAD-Project/OpenLane (fetch)
origin  https://github.com/The-OpenROAD-Project/OpenLane (push)

Reproduction material

WEIGHTS_XBAR.tar.gz

Relevant log output

n/a

[vijayank88]

Facing following error with your source and setup files.

[INFO]: Changing netlist to 'designs/WEIGHTS_XBAR/runs/run1/results/synthesis/WEIGHTS_XBAR.v'...
[ERROR]: The specified clock port 'CLK' does not exist in the top-level module.
[ERROR]: Step 1 (synthesis) failed with error:
-code 1 -level 0 -errorcode NONE -errorinfo {
    while executing
"throw_error"
    (procedure "run_synthesis" line 33)
    invoked from within
"run_synthesis"} -errorline 1

Are you using sky130 or gf180 pdk? you're using 2023.07.19 tag. Merge latest commit and try again.

[scorbetta]

Hello, yes it's combinational. It's a XBAR-like macro I am trying to harden. I don't get that error, though. I am using sky130. Will try with latest commit.

[scorbetta]

Nothing changed that much. Now pins are always on both W and E edges, but with random ordering. I'm using 2024.01.12 tag. I also added the CLK port. WEIGHTS_XBAR.tar.gz

[vijayank88]

seems you typed wrong name

set ::end(FP_PIN_ORDER_CFG) "$script_dir/pin_order.cfg"

replace with

set ::env(FP_PIN_ORDER_CFG) "$script_dir/pin_order.cfg"

above change will resolve your issue

[scorbetta]

Oh boy, silly me... I'm so sorry for that. Checked multiple times, never seen it...

Well, thanks for your time!