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Cannot load the dataset split (in streaming mode) to extract the first rows.
Error code:   StreamingRowsError
Exception:    CastError
Message:      Couldn't cast
problems: list<item: struct<orig_prompt: string, gt: null, candidates: list<item: string>, candidate_groups: l (... 85 chars omitted)
  child 0, item: struct<orig_prompt: string, gt: null, candidates: list<item: string>, candidate_groups: list<item: l (... 73 chars omitted)
      child 0, orig_prompt: string
      child 1, gt: null
      child 2, candidates: list<item: string>
          child 0, item: string
      child 3, candidate_groups: list<item: list<item: null>>
          child 0, item: list<item: null>
              child 0, item: null
      child 4, routing_details: null
      child 5, question: string
      child 6, options: null
metrics: struct<loop: int64, note: string>
  child 0, loop: int64
  child 1, note: string
units_total_problems: int64
units: list<item: struct<unit: string, bucket: string, phase: int64, max_evolution_loops: int64, LOOPS: int (... 59 chars omitted)
  child 0, item: struct<unit: string, bucket: string, phase: int64, max_evolution_loops: int64, LOOPS: int64, n_probl (... 47 chars omitted)
      child 0, unit: string
      child 1, bucket: string
      child 2, phase: int64
      child 3, max_evolution_loops: int64
      child 4, LOOPS: int64
      child 5, n_problems: int64
      child 6, n_spj: int64
      child 7, problem_loops: int64
phase2_units: list<item: struct<unit: string, bucket: string, phase: int64, max_evolution_loops: int64, LOOPS: int (... 59 chars omitted)
  child 0, item: struct<unit: string, bucket: string, phase: int64, max_evolution_loops: int64, LOOPS: int64, n_probl (... 47 chars omitted)
      child 0, unit: string
      child 1, bucket: string
      child 2, phase: int64
      child 3, max_evolution_loops: int64
      child 4, LOOPS: int64
      child 5, n_problems: int64
      child 6, n_spj: int64
      child 7, problem_loops: int64
phase2_units_total_problems: int64
units_total_problem_loops: int64
phase2_units_total_problem_loops: int64
note: string
to
{'units': List({'unit': Value('string'), 'bucket': Value('string'), 'phase': Value('int64'), 'max_evolution_loops': Value('int64'), 'LOOPS': Value('int64'), 'n_problems': Value('int64'), 'n_spj': Value('int64'), 'problem_loops': Value('int64')}), 'phase2_units': List({'unit': Value('string'), 'bucket': Value('string'), 'phase': Value('int64'), 'max_evolution_loops': Value('int64'), 'LOOPS': Value('int64'), 'n_problems': Value('int64'), 'n_spj': Value('int64'), 'problem_loops': Value('int64')}), 'units_total_problems': Value('int64'), 'units_total_problem_loops': Value('int64'), 'phase2_units_total_problems': Value('int64'), 'phase2_units_total_problem_loops': Value('int64'), 'note': Value('string')}
because column names don't match
Traceback:    Traceback (most recent call last):
                File "/src/services/worker/src/worker/utils.py", line 149, in get_rows_or_raise
                  return get_rows(
                      dataset=dataset,
                  ...<4 lines>...
                      column_names=column_names,
                  )
                File "/src/libs/libcommon/src/libcommon/utils.py", line 272, in decorator
                  return func(*args, **kwargs)
                File "/src/services/worker/src/worker/utils.py", line 129, in get_rows
                  rows_plus_one = list(itertools.islice(safe_iter(ds, dataset=dataset), rows_max_number + 1))
                File "/src/services/worker/src/worker/utils.py", line 489, in safe_iter
                  yield from ds.decode(False) if ds.features else ds
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2818, in __iter__
                  for key, example in ex_iterable:
                                      ^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2355, in __iter__
                  for key, pa_table in self._iter_arrow():
                                       ~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2380, in _iter_arrow
                  for key, pa_table in self.ex_iterable._iter_arrow():
                                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
                  for key, pa_table in iterator:
                                       ^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
                  for key, pa_table in self.generate_tables_fn(**gen_kwags):
                                       ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 343, in _generate_tables
                  self._cast_table(pa_table, json_field_paths=json_field_paths),
                  ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 132, in _cast_table
                  pa_table = table_cast(pa_table, self.info.features.arrow_schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2369, in table_cast
                  return cast_table_to_schema(table, schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2297, in cast_table_to_schema
                  raise CastError(
                  ...<3 lines>...
                  )
              datasets.table.CastError: Couldn't cast
              problems: list<item: struct<orig_prompt: string, gt: null, candidates: list<item: string>, candidate_groups: l (... 85 chars omitted)
                child 0, item: struct<orig_prompt: string, gt: null, candidates: list<item: string>, candidate_groups: list<item: l (... 73 chars omitted)
                    child 0, orig_prompt: string
                    child 1, gt: null
                    child 2, candidates: list<item: string>
                        child 0, item: string
                    child 3, candidate_groups: list<item: list<item: null>>
                        child 0, item: list<item: null>
                            child 0, item: null
                    child 4, routing_details: null
                    child 5, question: string
                    child 6, options: null
              metrics: struct<loop: int64, note: string>
                child 0, loop: int64
                child 1, note: string
              units_total_problems: int64
              units: list<item: struct<unit: string, bucket: string, phase: int64, max_evolution_loops: int64, LOOPS: int (... 59 chars omitted)
                child 0, item: struct<unit: string, bucket: string, phase: int64, max_evolution_loops: int64, LOOPS: int64, n_probl (... 47 chars omitted)
                    child 0, unit: string
                    child 1, bucket: string
                    child 2, phase: int64
                    child 3, max_evolution_loops: int64
                    child 4, LOOPS: int64
                    child 5, n_problems: int64
                    child 6, n_spj: int64
                    child 7, problem_loops: int64
              phase2_units: list<item: struct<unit: string, bucket: string, phase: int64, max_evolution_loops: int64, LOOPS: int (... 59 chars omitted)
                child 0, item: struct<unit: string, bucket: string, phase: int64, max_evolution_loops: int64, LOOPS: int64, n_probl (... 47 chars omitted)
                    child 0, unit: string
                    child 1, bucket: string
                    child 2, phase: int64
                    child 3, max_evolution_loops: int64
                    child 4, LOOPS: int64
                    child 5, n_problems: int64
                    child 6, n_spj: int64
                    child 7, problem_loops: int64
              phase2_units_total_problems: int64
              units_total_problem_loops: int64
              phase2_units_total_problem_loops: int64
              note: string
              to
              {'units': List({'unit': Value('string'), 'bucket': Value('string'), 'phase': Value('int64'), 'max_evolution_loops': Value('int64'), 'LOOPS': Value('int64'), 'n_problems': Value('int64'), 'n_spj': Value('int64'), 'problem_loops': Value('int64')}), 'phase2_units': List({'unit': Value('string'), 'bucket': Value('string'), 'phase': Value('int64'), 'max_evolution_loops': Value('int64'), 'LOOPS': Value('int64'), 'n_problems': Value('int64'), 'n_spj': Value('int64'), 'problem_loops': Value('int64')}), 'units_total_problems': Value('int64'), 'units_total_problem_loops': Value('int64'), 'phase2_units_total_problems': Value('int64'), 'phase2_units_total_problem_loops': Value('int64'), 'note': Value('string')}
              because column names don't match

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Check out the documentation for more information.

round3-fb-se — round-3 feedback-SE run units (gpt-oss-120B only)

Feedback-SE evolution loops on the round-3 screen pool, restarting from the screen run's clean loop-0 populations (16 candidates/problem). Loop 0 is NOT re-run.

  • Buckets: checker-corrected 120B screen buckets (screen_per_problem.spjfix.csv); bucket 16 (saturated) excluded. 2,833 problems total.
  • Loop caps (evidence: round-2 rerun vs matched independent): bucket 0 → 8 evolution loops, 1-3 / 4-7 / 8-11 → 6, 12-15 → 4. LOOPS in unit.env = 1 + evo.
  • Phases: phase 1 = r3fb_120b_{b00,b13,b47,b811}_u* (13 units, 2,345 problems, 16,290 problem-loops). Phase 2 = r3fb_120b_b1215_u00..01 (488 problems, 1,952 problem-loops) — run AFTER all phase-1 units.
  • SPJ-aware feedback (new): 217 problems carry a certified special-judge checker inline in their fb_tests.jsonl row; the shipped lcb_public_probe_harness_spj.py consults it on stdout mismatch, so any-valid-answer solutions no longer receive bogus "wrong answer" feedback. Non-SPJ rows behave bit-identically to the fixed (5d921c4) harness. Feedback tests = first 8 of the 50 grading tests (LCB_FB_FULLTESTS unset — subset wording).
  • Runner: run_shard_r3_fb.sh (copy into <tts-sft>/handoff/round2/, and copy lcb_public_probe_harness_spj.py into <tts-sft>/scripts/). Requires the round-3 minipatch (stdin-buffer fix) already applied. One node = one unit: UNIT=<DATA>/120b/<name> RUN_DIR=<out>/<name> bash run_shard_r3_fb.sh. Resume = re-run the same command.
  • Returns: upload each whole RUN_DIR (loops.out.jsonl + ck_nonsat/ + *.raw.json + fb_audit.jsonl + run.log). Grading happens on the cutting side (checker-aware).

The compute-matched independent-sampling arm is cut AFTER these runs return, from this run's token ledger (same harvest-at-16 method as round 2).

Unit layout is identical to tts-sft/round2-rerun-fb (seeds.jsonl, fb_tests.jsonl, ck_nonsat/_loop0.json, unit.env, unit.json), prefix r3fb_120b_.

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