fix is_cpu_op bug

[yue2388253]

Summary

Converting ASTRA-sim 1.0 text input files does not add is_cpu_op field. As a result, the COMM nodes are always skipped by the workload layer of astra-sim, as reported in #144 and astra-sim/astra-sim#224.
Simply adding the attribute might fix the bug.

[github-actions]

MLCommons CLA bot:
Thank you very much for your submission, we really appreciate it. Before we can accept your contribution, we ask that you sign the MLCommons CLA (Apache 2). Please use this [Google form] (https://forms.gle/Ew1KkBVpyeJDuRw67) to initiate authorization. If you are from an MLCommons member organization, we will request that you be added to the CLA. If you are not from a member organization, we will email you a CLA to sign. For any questions, please contact [email protected].
0 out of 1 committers have signed the MLCommons CLA.
❌ @yue2388253
_{You can retrigger this bot by commenting recheck in this Pull Request}

[willjwon]

Thanks for your contribution, @yue2388253. We acknowledge this problem and would like to merge this in, once you sign the CLA form (https://drive.google.com/file/d/1SkpAdb3ka8tXepCawgGxAyo6cUH5ZAZg/view). Could you please do so?

[yue2388253]

Thanks for your contribution, @yue2388253. We acknowledge this problem and would like to merge this in, once you sign the CLA form (https://drive.google.com/file/d/1SkpAdb3ka8tXepCawgGxAyo6cUH5ZAZg/view). Could you please do so?

Hi @willjwon, I have submitted the CLA form as requested. Could you kindly review and confirm if the PR is ready for merging?

Thank you for your time and consideration.