Fix CI build for skywater using edalize

[secworks]

It seems the edalize based CI build for skywater is broken (again):

`Error: : during executing openroad script /openlane/scripts/openroad/groute.tcl Error: : Exit code: 1 Error: : Last 10 lines:

ERROR: Unable to find image 'edalize/openlane-sky130:mpw4' locally

... ...

Status: Downloaded newer image for edalize/openlane-sky130:mpw4 no such variable (read trace on "::env(PWD)") invoked from within "relpath $::env(PWD) $reproducible_dir" (procedure "run_openroad_script" line 38) invoked from within "run_openroad_script $::env(SCRIPTS_DIR)/openroad/groute.tcl -indexed_log $saveLOG" (procedure "global_routing_fastroute" line 5) invoked from within "global_routing_fastroute" (procedure "global_routing" line 13) invoked from within "global_routing" (procedure "run_routing" line 35) invoked from within "run_routing" (procedure "run_routing_step" line 7) invoked from within "[lindex $step_exe 0] [lindex $step_exe 1] " (procedure "run_non_interactive_mode" line 54) invoked from within "run_non_interactive_mode {*}$argv" invoked from within "if { [info exists flags_map(-interactive)] || [info exists flags_map(-it)] } { puts_info "Running interactively" if { [info exists arg_values(-file)..." (file "/openlane/flow.tcl" line 346) make: *** [Makefile:4: all] Error 1

ERROR: Failed to build secworks:crypto:aes:0 : '['make']' exited with an error: 2

Error: Process completed with exit code 1. `

Any idea what the error is @olofk ?

[olofk]

Ok, so after reading through almost 40000 lines of the build log, I found the error at line 39992 [ERROR GRT-0229] Vertical edge usage exceeds the maximum allowed. OpenLANE simply fails to route the design.

You could try changing the utilization ratio, target clock frequency or something to see if it disappears. Or perhaps some code changes caused this? I also see a ton of timing errors related to reset, so maybe the router is trying really hard to meet timing there.

We should probably also use a newer version of OpenLANE, but I haven't had time to package one for a long time

[secworks]

Wow! Quite unexpected. Since the core hasn't fundamentally changed, and I nowadays have the similar openlane build issue with other cores that has not been changed for a long time, I assumed that the environment have regressed somehow. Not that the design suddenly would start really being the issue. The build times has also gone up significantly for many cores.

[secworks]

So this has nothing to do with the problem? ERROR: Unable to find image 'edalize/openlane-sky130:mpw4' locally ... ... Status: Downloaded newer image for edalize/openlane-sky130:mpw4

[olofk]

No. It just hasn't got the docker image cached and needs to download it

[secworks]

Ah, ok.