RL + Gym Rollout logs contains mostly nulls as attribute values

Open shashank3959 opened this issue 3 weeks ago • 1 comments
Describe the bug
NeMo RL GRPO training scripts save rollout results in wandb as run.summary logs. In datasets that have multiple tools, it appears as if its saving redundant attribute information in each example. And when a tool / attribute is not triggered, it saves as "null". This makes the log very noisy and hard to interpret.
A short excerpt of the logs
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Steps/Code to reproduce bug
Run GRPO with the workplace_assistant environment.
I have branches that add a tutorial that uses Nemotron nano v2 9B model with this environment. NeMo-RL branch: https://github.com/shashank3959/RL/tree/dev/shashankv-add-grpo-workplace-asst NeMo-Gym branch: https://github.com/shashank3959/gym/tree/dev/shashankv-add-grpo-workplace-asst
Expected behavior
Logs are clear enough to debug any issues.
Configs NeMo Gym (e.g. via ng_dump_config) or RL training framework config files.
Environment details
https://github.com/shashank3959/RL/commit/0ab26506b45e65be7b4b507883585a5d65d6a4af
Additional context
Running on a SLURM cluster with a 8xH100 node.
Dec 04 '25 00:12 shashank3959
The fix for this is to upload responses_create_params as a string to HF since the apache parquet backing requires non-ragged data structure
Dec 04 '25 00:12 bxyu-nvidia