I m trying to use the Sky130 PDK and I get this issue when u open-source-silicon.dev #klayout

I'm trying to use the Sky130 PDK and I get this is...

Matthew Guthaus

01/22/2025, 11:48 PM

I'm trying to use the Sky130 PDK and I get this issue when using it on some platforms, but not others:

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sh: line 1: pmap: command not found
ERROR: In /home/mrg/class/chip-tutorials/klayout/tech/sky130/pymacros/../lvs/sky130.lvs: undefined method `strip' for nil:NilClass
ERROR: /home/mrg/class/chip-tutorials/klayout/tech/sky130/pymacros/run_lvs.lym:135: RuntimeError: NoMethodError: undefined method `strip' for nil:NilClass in Executable::execute
  /home/mrg/class/chip-tutorials/klayout/tech/sky130/pymacros/../lvs/sky130.lvs:27:in `block in execute'
  /nix/store/c4bdx4dja3h06xg1ksv3f51alp5a44li-ruby-3.1.5/lib/ruby/3.1.0/logger.rb:586:in `format_message'
  /nix/store/c4bdx4dja3h06xg1ksv3f51alp5a44li-ruby-3.1.5/lib/ruby/3.1.0/logger.rb:476:in `add'
  /nix/store/c4bdx4dja3h06xg1ksv3f51alp5a44li-ruby-3.1.5/lib/ruby/3.1.0/logger.rb:529:in `info'
  /home/mrg/class/chip-tutorials/klayout/tech/sky130/pymacros/../lvs/sky130.lvs:34:in `execute'
  :/built-in-macros/lvs_interpreters.lym:31:in `instance_eval'
  :/built-in-macros/lvs_interpreters.lym:31:in `execute' in Macro.run
  /home/mrg/class/chip-tutorials/klayout/tech/sky130/pymacros/run_lvs.lym:135

As far as I can tell, it does this depending on the version of Ruby. Older ones (2.7) work but newer ones (3.1) don't? This demo has a sky130 inv_1 gds and spice as well as the PDK scripts

demo.tar.gz

Matthew Guthaus

01/22/2025, 11:58 PM

So far, it works on Ubuntu 20.04 with Ruby 2.7.1. It fails on: Ubuntu 20.04 with Ruby 3.1.5 inside Docker MacOS Sequoia 15 with Ruby 2.6.10

Mitch Bailey

01/23/2025, 12:17 AM

@Matthew Guthaus the

sky130.lvs

file has this line

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logger.formatter = proc do |severity, datetime, progname, msg|
  "#{datetime}: Memory Usage (" + `pmap #{Process.pid} | tail -1`[10,40].strip + ") : #{msg}\n"

If the

pmap

command is not available, it appears to return a

nil

object that results in a failure because there is no ~~script~~

strip

method. Can you verify that

pmap

is available on the platforms that work and not available on platforms that do not work? This is just a log header formatter to show memory usage. I think this will allow lvs to run but not show memory usage.

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logger.formatter = proc do |severity, datetime, progname, msg|
  "#{datetime}: Memory Usage (unavailable) : #{msg}\n"

Matthew Guthaus

01/23/2025, 3:05 PM

@Mitch Bailey I can confirm. I was wondering what that was.. thank you.

👍 1

Matthew Guthaus

01/24/2025, 2:31 AM

@donn It seems that pmap disappeared from the openlane image between 2.2.9 and 2.3.1. Is there a way to get it added back in the image? sudo apt install pmap

Matthew Guthaus

01/24/2025, 4:19 AM

Or, we can also just remove the logging from the script. That actually is fine.

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