ECO Flow failed

[vijayank88]

Description

Running mpw-5 design repo: https://github.com/antonblanchard/microwatt-mpw5 with openlane tag: https://github.com/The-OpenROAD-Project/OpenLane/releases/tag/2022.04.28_01.44.59. Its failed duringeco_gen_buffer by not able to find

no files matched glob pattern "*_unpadded.lef"
    while executing
"glob -directory $::env(RUN_DIR)/tmp  *_unpadded.lef"

@antonblanchard FYI

I think recent update in OpenLane *_unpadded.lef changed to *.unpadded.nom.lef. For other STA corners min and max. So the eco_gen_buffer proc should updated accordingly.

Environment

Please run the following set of commands in the OpenLane folder:

make survey || python3 ./env.py issue-survey
Kernel: Linux v3.10.0-1160.49.1.el7.x86_64
Distribution: centos 7
Python: v3.6.8 (OK)
Container Engine: docker v20.10.13 (OK)
OpenLane Git Version: 2022.04.28_01.44.59
pip: INSTALLED
pip:venv: INSTALLED
---
PDK Version Verification Status: OK
---

@dralabeing FYI

Reproduction Material

MPW repo: https://github.com/antonblanchard/microwatt-mpw5/blob/main/openlane/Microwatt_FP_DFFRFile/config.tcl

Expected behavior

ECO flow should pass.

Logs

[INFO]: Starting ECO flow...
[INFO]: [ECO: 0] Checking output...
no files matched glob pattern "*_unpadded.lef"
    while executing
"glob -directory $::env(RUN_DIR)/tmp  *_unpadded.lef"
    (procedure "eco_gen_buffer" line 5)
    invoked from within
"eco_gen_buffer"
    (procedure "eco_output_check" line 4)
    invoked from within
"eco_output_check"
    (procedure "run_eco_flow" line 7)
    invoked from within
"run_eco_flow"
    (procedure "run_eco_step" line 4)
    invoked from within
"[lindex $step_exe 0] [lindex $step_exe 1] "
    (procedure "run_non_interactive_mode" line 55)
    invoked from within
"run_non_interactive_mode {*}$argv"
    invoked from within
"if { [info exists flags_map(-interactive)] || [info exists flags_map(-it)] } {
	if { [info exists arg_values(-file)] } {
		run_file [file normalize $a..."
    (file "./flow.tcl" line 427)
make: *** [quick_run] Error 1
make: Leaving directory `/home/vijayan/FORK_OPENROAD/OL_MPW_CI/OpenLane-MPW-CI/OpenLane'

[dralabeing]

@vijayank88 if the suggested fix works in your repo, please submit a pr.

[antonblanchard]

Thanks for looking into this @vijayank88. You might also trip over https://github.com/The-OpenROAD-Project/OpenLane/issues/1030

[vijayank88]

@vijayank88 if the suggested fix works in your repo, please submit a pr.

@dralabeing I am not found any fix for it. Just digging it.

By default set ::env(ECO_ENABLE) 0". But while running this particular repo its set to ECO_ENABLE=1, but don't understand how its got enable. Also the eco_gen_buffer proc should be updated to read proper file as per current OpenLane updates.

[dralabeing]

@donn fyi

[ramrajrl]

I have been attempting ECO hold fixes as well, I'm seeing that the re-router iteration post buffer insertion falls over with a cryptic openroad error - any assistance in debug would be much appreciated. Can upload the testcase if anyone would like to reproduce it, please let me know.

Need to mention that I'm using the HS Std-cell library - although don't see how that would make a difference. Many Thanks, Ram

[STEP 28]
[INFO]: Running Multi-Corner Static Timing Analysis at the nom process corner...
[INFO]: Starting ECO flow...
[INFO]: [ECO: 0] Checking output...
[INFO]: [ECO: 0] Generating buffer insertion script...
[INFO]: [ECO: 0] Timing violations found, performing another ECO iteration...
[INFO]: [ECO: 1] Starting iteration...
[INFO]: [ECO: 1] Applying fixes...
[INFO]: Routing...
[STEP 29]
[INFO]: Running Global Routing Resizer Timing Optimizations...
[ERROR]: during executing openroad script /openlane/scripts/openroad/resizer_routing_timing.tcl
[ERROR]: Exit code: 1
[ERROR]: full log: designs/dfdecode7x6/runs/RUN_2022.06.10_10.32.41/logs/routing/29-resizer.log
[ERROR]: Last 10 lines:
47# 0x00007F4A2E028F1E in /lib64/libtcl8.5.so
48# Tcl_EvalEx in /lib64/libtcl8.5.so
49# Tcl_Eval in /lib64/libtcl8.5.so
50# sta::sourceTclFile(char const*, bool, bool, Tcl_Interp*) in openroad
51# ord::tclAppInit(Tcl_Interp*) in openroad
52# Tcl_Main in /lib64/libtcl8.5.so
53# main in openroad
54# __libc_start_main in /lib64/libc.so.6
55# 0x0000000001028727 in openroad
child process exited abnormally