Dataset Viewer
The dataset viewer is not available for this dataset.
Cannot get the config names for the dataset.
Error code:   ConfigNamesError
Exception:    TypeError
Message:      SplitInfo.__init__() got an unexpected keyword argument 'num_shards'
Traceback:    Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/dataset/config_names.py", line 66, in compute_config_names_response
                  config_names = get_dataset_config_names(
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/inspect.py", line 161, in get_dataset_config_names
                  dataset_module = dataset_module_factory(
                                   ^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/load.py", line 1207, in dataset_module_factory
                  raise e1 from None
                File "/usr/local/lib/python3.12/site-packages/datasets/load.py", line 1182, in dataset_module_factory
                  ).get_module()
                    ^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/load.py", line 612, in get_module
                  dataset_infos = DatasetInfosDict.from_dataset_card_data(dataset_card_data)
                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/info.py", line 386, in from_dataset_card_data
                  dataset_info = DatasetInfo._from_yaml_dict(dataset_card_data["dataset_info"])
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/info.py", line 319, in _from_yaml_dict
                  yaml_data["splits"] = SplitDict._from_yaml_list(yaml_data["splits"])
                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/splits.py", line 600, in _from_yaml_list
                  return cls.from_split_dict(yaml_data)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/splits.py", line 570, in from_split_dict
                  split_info = SplitInfo(**split_info)
                               ^^^^^^^^^^^^^^^^^^^^^^^
              TypeError: SplitInfo.__init__() got an unexpected keyword argument 'num_shards'

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prepacked-fineweb-edu-llama2-32K-T2048

Pre-tokenized and BOS-aligned best-fit packed version of FineWeb-Edu for training with looped nanochat.

Tokenized with the Llama 2 tokenizer (32,000 base vocab + 8 special tokens = 32,008).

Stats

Train split

Source karpathy/fineweb-edu-100b-shuffle (1,821 shards)
Total tokens 63.26B
Total docs 97.1M
Rows 30,873,598
Shards 2,059 (train-00000 to train-02058)
Rows per shard ~15,000

Val split

Source 2 shards (shard_01821–shard_01822)
Total tokens 70.9M
Total docs 106,496
Rows 34,608
Shards 3 (val-00000 to val-00002)

Common

Row length 2,049 (T+1, seq_len=2048)
Format Parquet, uint16 token column
Tokenizer Llama 2 32K (NousResearch/Llama-2-7b-hf)
BOS token <s> (id=1)
Packing Best-fit, BOS-aligned, buffer_size=1000

Each row is a packed sequence of multiple BOS-delimited documents, cropped/filled to exactly 2,049 tokens. Rows are shuffled within each shard.

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