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GRPO E2E TEST REPORT: test_e2e_training_loop_mock
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Status:               passed
Duration:             0.04s
Training steps:       2
Rollouts per step:    4
Total rollouts:       8

--- Model Weight Change ---
Weights changed:      True
Total delta L2 norm:  0.185477
  embedding.weight: delta=0.025376 (norm 91.4769 -> 91.4746)
  head.weight: delta=0.180939 (norm 9.2112 -> 9.2100)
  head.bias: delta=0.031921 (norm 1.5798 -> 1.5810)

--- Training Metrics ---
  Step 0: loss=0.0000 reward_mean=0.50 grad_norm=1.0000 valid_terms=8
  Step 1: loss=0.0000 reward_mean=0.50 grad_norm=1.0000 valid_terms=8

--- Checkpoint ---
Checkpoint path:      test_artifacts/grpo_e2e/20261016_215929/checkpoint/step_2
Checkpoint loadable:  True

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