Hi I m trying to understand the toolchain flow so I m tracin open-source-silicon.dev #general

Hi, I'm trying to understand the toolchain flow, s...

Sean Cross

11/21/2022, 9:39 AM

Hi, I'm trying to understand the toolchain flow, so I'm tracing the build as it goes along. I'm trying to create the PDK now, but I'm getting stuck. The

open_pdks

Makefile

appears to be generating invalid yaml, which is breaking something during the build. Where is the correct place to discuss this tool? Also, how should people contribute patches to tools like that?

Arman Avetisyan

11/21/2022, 9:44 AM

1. post reproduction steps 2. Best place discussing #open_pdks 3. tldr: On github create a pull request or issue for the appropriate tool

Sean Cross

11/21/2022, 9:45 AM

Thanks. The reproduction steps are: 1. Run

./configure --enable-sky130-pdk

followed by

make

2. I don't see

#open_pdks

. Where is that? 3. The

open_pdks

repo does not have issues or pull requests enabled, which is why I thought I'd ask.

Vijayan Krishnan

11/21/2022, 9:46 AM

https://github.com/RTimothyEdwards/open_pdks are you using this repo right?

Sean Cross

11/21/2022, 9:47 AM

Oh, I see, for (2), the "Channels" list is not a list of all channels, it's jut a subset. Thanks, I didn't know that. You need to mouse-over "Channels" in order to see a "+" sign that lets you join more channels.

Sean Cross

11/21/2022, 9:47 AM

Yes, that's the repo I'm using.

Sean Cross

11/21/2022, 9:55 AM

It looks like the Makefile did something funny with a configuration file `.condarc`:

Copy code

$ more /opt/Si/src/open_pdks/sources/sky130-pdk/env/conda/.condarc
envs_dirs:
  - /opt/Si/src/open_pdks/sources/sky130-pdk/env/conda/envs
onda-pkgs
$

Sean Cross

11/21/2022, 10:15 AM

Maybe it's threaded and some write got sequenced oddly? It definitely seems like a race condition. At any rate I deleted the whole

open_pdks

directory, re-cloned it, and re-rand the build. It worked the second time, but I was wondering if there's anywhere I can report issues like these so that others can find them, or where I can find discussions about common problems that people encounter while setting this up.

Sean Cross

11/21/2022, 1:10 PM

That is truly bizarre. If I go to https://github.com/RTimothyEdwards/open_pdks now I see the top bar with "Issues" and "Pull Requests". Previously the tabs on top just didn't load for that repo, so I'd assumed those features were disabled.

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