XPK Start: Sun Apr 19 19:46:54 UTC 2026
PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used.
2026-04-19 19:47:18.630882: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303)
I0419 19:47:18.812347 134155674101568 max_utils.py:273] Attempting to initialize the jax distributed system...
I0419 19:47:27.854998 134155674101568 distributed.py:149] Starting JAX distributed service on [::]:8482
I0419 19:47:27.857355 134155674101568 distributed.py:172] Connecting to JAX distributed service on mt-16-zarr3-false-rs-x5qdk-slice-job-0-0.mt-16-zarr3-false-rs-x5qdk:8482
I0419 19:47:29.243614 134155674101568 max_utils.py:284] Jax distributed system initialized!
I0419 19:47:35.590523 134155674101568 max_utils.py:800] System Information: Jax Version: 0.9.2
I0419 19:47:35.590626 134155674101568 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0419 19:47:35.590664 134155674101568 max_utils.py:802] System Information: Jax Backend: PJRT C API
TFRT TPU v6 lite
Built on Mar 4 2026 11:32:08 (1772652728) cl/878335365
I0419 19:47:35.590698 134155674101568 train_utils.py:348] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0419 19:47:36.285731 134155674101568 maxtext_utils.py:1551] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0419 19:47:36.286006 134155674101568 checkpointing.py:677] Setting up checkpoint logger...
I0419 19:47:36.286057 134155674101568 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=False
I0419 19:47:36.286100 134155674101568 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0419 19:47:36.286452 134155674101568 base_pytree_checkpoint_handler.py:441] Created BasePyTreeCheckpointHandler: use_ocdbt=True, use_zarr3=False, pytree_metadata_options=PyTreeMetadataOptions(support_rich_types=False), array_metadata_store=<orbax.checkpoint._src.metadata.array_metadata_store.Store object at 0x7a02d5948e90>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0419 19:47:37.578586 134155674101568 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0419 19:47:37.578817 134155674101568 checkpoint_manager.py:708] [process=6][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x79ef100c5640>}, handler_registry=None
I0419 19:47:37.579051 134155674101568 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x79ef100c5640>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`.
I0419 19:47:37.579100 134155674101568 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x79ef100ca990>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`.
I0419 19:47:37.579135 134155674101568 composite_checkpoint_handler.py:505] Initialized registry DefaultCheckpointHandlerRegistry({('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x79ef100c5640>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x79ef100c5640>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x79ef100ca990>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x79ef100ca990>}).
I0419 19:47:37.579476 134155674101568 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0419 19:47:37.579546 134155674101568 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x79eec8387d80> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0419 19:47:40.776064 134033824532224 checkpoint.py:228] Read Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776627890042263606, 'commit_timestamp_nsecs': 1776627938100866802, 'custom_metadata': {}} from gs://lance-maxtext/linen_ckpt_xpk_main_20260419_180002/linen_xpk_main_20260419_180002_16_zarr3_false/checkpoints/9/_CHECKPOINT_METADATA
I0419 19:47:41.451633 134033824532224 checkpoint_manager.py:1871] Missing metrics for step 9
I0419 19:47:41.894757 134155674101568 checkpoint_manager.py:1812] Found 3 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260419_180002/linen_xpk_main_20260419_180002_16_zarr3_false/checkpoints
I0419 19:47:41.897352 134155674101568 checkpoint_manager.py:929] [process=6][thread=MainThread] CheckpointManager created, primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=True, async_options=None, multiprocessing_options=MultiprocessingOptions(primary_host=0, active_processes=None, barrier_sync_key_prefix=None), should_save_fn=None, file_options=FileOptions(path_permission_mode=None), save_root_metadata=True, temporary_path_class=None, save_decision_policy=FixedIntervalPolicy(interval=5), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False, lightweight_initialize=False), root_directory=gs://lance-maxtext/linen_ckpt_xpk_main_20260419_180002/linen_xpk_main_20260419_180002_16_zarr3_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x79ef100c6300>
I0419 19:47:41.897487 134155674101568 checkpointing.py:301] Checkpoint manager created!
I0419 19:47:42.838912 134155674101568 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0419 19:47:42.839025 134155674101568 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0419 19:47:43.221978 134155674101568 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0419 19:47:43.222066 134155674101568 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0419 19:47:43.238077 134155674101568 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0419 19:47:43.238145 134155674101568 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0419 19:47:43.261548 134155674101568 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0419 19:47:43.261617 134155674101568 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0419 19:47:43.277816 134155674101568 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0419 19:47:43.277878 134155674101568 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0419 19:47:43.293861 134155674101568 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0419 19:47:43.293920 134155674101568 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0419 19:47:43.318957 134155674101568 attentions.py:1197] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0419 19:47:43.319026 134155674101568 attentions.py:1197] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0419 19:47:43.339965 134155674101568 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0419 19:47:43.340029 134155674101568 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0419 19:47:43.554581 134155674101568 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0419 19:47:43.554695 134155674101568 checkpointing.py:581] restoring from this run's directory step 9
I0419 19:47:43.817589 134155674101568 event_tracking.py:70] [process=6] [sync] Started load checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260419_180002/linen_xpk_main_20260419_180002_16_zarr3_false/checkpoints/9.
I0419 19:47:44.065443 134155674101568 checkpointer.py:307] Restoring checkpoint from gs://lance-maxtext/linen_ckpt_xpk_main_20260419_180002/linen_xpk_main_20260419_180002_16_zarr3_false/checkpoints/9.
I0419 19:47:44.065855 134155674101568 event_tracking.py:125] [process=6] [sync] Finished blocking load in 0.25 seconds. Continuing load @ gs://lance-maxtext/linen_ckpt_xpk_main_20260419_180002/linen_xpk_main_20260419_180002_16_zarr3_false/checkpoints/9.
I0419 19:47:45.569692 1460 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0419 19:47:52.488128 134155674101568 jax_array_handlers.py:843] [process=6] /jax/orbax/read/worker/io/requested throughput: 228.215 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 6.924503803253174 s) (per-host)
I0419 19:47:52.492750 134155674101568 base_pytree_checkpoint_handler.py:130] [process=6] /jax/checkpoint/read/gbytes_per_sec: 213.145 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 7.42496919631958 s) (per-host)
I0419 19:47:53.571243 134155674101568 event_tracking.py:138] [process=6] [sync] Finished load in 9.75 seconds @ gs://lance-maxtext/linen_ckpt_xpk_main_20260419_180002/linen_xpk_main_20260419_180002_16_zarr3_false/checkpoints/9
I0419 19:47:53.571404 134155674101568 standard_logger.py:34] {'step': 9, 'event_type': 'restore', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260419_180002/linen_xpk_main_20260419_180002_16_zarr3_false/checkpoints', 'checkpointer_start_time': 1776628063.8174913, 'checkpointer_duration_secs': 9.753880977630615, 'checkpoint_manager_start_time': 1776628063.5549505, 'checkpoint_manager_duration_secs': 10.01642394065857}
fsdp: 32
I0419 19:47:53.988582 134155674101568 maxtext_utils.py:1654] params/params/decoder/decoder_norm/scale
Shape: float32[2048]
Logical: P('norm',)
Physical: (None,)
I0419 19:47:53.988707 134155674101568 maxtext_utils.py:1654] params/params/decoder/layers/mlp/wi_0/kernel
Shape: float32[2048,16,7168]
Logical: P('embed', 'layers', 'mlp')
Physical: ('fsdp', None, None)
I0419 19:47:53.988759 134155674101568 maxtext_utils.py:1654] params/params/decoder/layers/mlp/wi_1/kernel
Shape: float32[2048,16,7168]
Logical: P('embed', 'layers', 'mlp')
Physical: ('fsdp', None, None)
I0419 19:47:53.988830 134155674101568 maxtext_utils.py:1654] params/params/decoder/layers/mlp/wo/kernel
Shape: float32[7168,16,2048]
Logical: P('mlp', 'layers', 'embed')
Physical: (None, None, 'fsdp')
I0419 19:47:53.988928 134155674101568 maxtext_utils.py:1654] params/params/decoder/layers/post_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: P('norm', 'layers')
Physical: (None, None)
I0419 19:47:53.989001 134155674101568 maxtext_utils.py:1654] params/params/decoder/layers/pre_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: P('norm', 'layers')
Physical: (None, None)
I0419 19:47:53.989087 134155674101568 maxtext_utils.py:1654] params/params/decoder/layers/self_attention/key/kernel
Shape: float32[2048,16,16,128]
Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim')
Physical: ('fsdp', None, None, None)
I0419 19:47:53.989168 134155674101568 maxtext_utils.py:1654] params/params/decoder/layers/self_attention/out/kernel
Shape: float32[16,16,128,2048]
Logical: P('heads', 'layers', 'kv', 'embed')
Physical: (None, None, None, 'fsdp')
I0419 19:47:53.989235 134155674101568 maxtext_utils.py:1654] params/params/decoder/layers/self_attention/query/kernel
Shape: float32[2048,16,16,128]
Logical: P('embed', 'layers', 'q_heads', 'kv')
Physical: ('fsdp', None, None, None)
I0419 19:47:53.989299 134155674101568 maxtext_utils.py:1654] params/params/decoder/layers/self_attention/value/kernel
Shape: float32[2048,16,16,128]
Logical: P('embed', 'layers', 'kv_heads', 'kv_head_dim')
Physical: ('fsdp', None, None, None)
I0419 19:47:53.989379 134155674101568 maxtext_utils.py:1654] params/params/decoder/logits_dense/kernel
Shape: float32[2048,32000]
Logical: P('embed_vocab', 'vocab')
Physical: ('fsdp', None)
I0419 19:47:53.989497 134155674101568 maxtext_utils.py:1654] params/params/token_embedder/embedding
Shape: float32[32000,2048]
Logical: P('vocab', 'embed_vocab')
Physical: (None, 'fsdp')
I0419 19:47:54.468480 134155674101568 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0419 19:47:54.468574 134155674101568 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0419 19:47:54.483557 134155674101568 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0419 19:47:54.483617 134155674101568 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0419 19:48:05.551145 134155674101568 max_utils.py:791] Total memory size: 1.5 GB, Output size: 0.4 GB, Temp size: 1.1 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0419 19:48:05.551941 134155674101568 metric_logger.py:301] number parameters: 1.104 billion
XPK End: Sun Apr 19 19:48:14 UTC 2026
EXIT_CODE=143