[
  {
    "id": "megatron-fsdp-positive-enable-smoke",
    "question": "Use the nemo-mbridge-perf-megatron-fsdp skill. Give the minimal Megatron Bridge Megatron-FSDP override, the required checkpoint format, and the pitfalls that distinguish Megatron FSDP from Torch FSDP2.",
    "expected_skill": "nemo-mbridge-perf-megatron-fsdp",
    "expected_script": null,
    "ground_truth": "The answer should use the Megatron FSDP skill. It should set cfg.dist.use_megatron_fsdp=True, cfg.ddp.use_megatron_fsdp=True, cfg.ddp.data_parallel_sharding_strategy=\"optim_grads_params\", and cfg.checkpoint.ckpt_format=\"fsdp_dtensor\" when save/load is enabled. It should mention use_torch_fsdp2 is mutually exclusive with Megatron FSDP and is not the validated path, use_tp_pp_dp_mapping is not supported with Megatron FSDP, and Hopper or earlier may need attention to CUDA_DEVICE_MAX_CONNECTIONS because FSDP and TP/CP prefer different settings.",
    "expected_behavior": [
      "Read the nemo-mbridge-perf-megatron-fsdp skill before answering.",
      "Identify the request as Megatron Bridge Megatron FSDP enablement.",
      "List cfg.dist.use_megatron_fsdp and cfg.ddp.use_megatron_fsdp.",
      "List data_parallel_sharding_strategy=optim_grads_params and ckpt_format=fsdp_dtensor.",
      "Mention FSDP2 mutual exclusion and use_tp_pp_dp_mapping incompatibility.",
      "Include a Bridge-specific verification or test path."
    ]
  }
]