2026-04-16 13:11:50.968908: 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) I0416 13:11:51.084475 126548021759104 max_utils.py:238] Skipping jax distributed system due to skip_jax_distributed_system=True flag. I0416 13:12:47.494298 126548021759104 max_utils.py:800] System Information: Jax Version: 0.9.2 I0416 13:12:47.494412 126548021759104 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0416 13:12:47.494446 126548021759104 max_utils.py:802] System Information: Jax Backend: PJRT C API TFRT TPU v6 lite Built on Apr 6 2026 20:48:10 (1775533690) cl/895581894 I0416 13:12:47.494473 126548021759104 train_utils.py:334] WARNING: 'dataset_path' might be pointing your local file system I0416 13:12:47.494498 126548021759104 train_utils.py:347] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0416 13:12:47.494580 126548021759104 train.py:683] [DECOUPLED NO-OP] skipping cloud diagnostics wrapper. W0416 13:12:47.587602 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 13:12:47.992786 126548021759104 maxtext_utils.py:1517] Num_devices: 8, shape (1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0416 13:12:47.993119 126548021759104 checkpointing.py:677] Setting up checkpoint logger... I0416 13:12:47.993165 126548021759104 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0416 13:12:47.993205 126548021759104 pytree_checkpoint_handler.py:577] save_device_host_concurrent_bytes=None I0416 13:12:47.993834 126548021759104 base_pytree_checkpoint_handler.py:411] Created BasePyTreeCheckpointHandler: use_ocdbt=True, use_zarr3=True, pytree_metadata_options=PyTreeMetadataOptions(support_rich_types=False), array_metadata_store=<orbax.checkpoint._src.metadata.array_metadata_store.Store object at 0x7317ab9db740>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0416 13:12:50.409807 126548021759104 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0416 13:12:50.409972 126548021759104 checkpoint_manager.py:702] [process=0][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7311305cbaa0>}, handler_registry=None I0416 13:12:50.410234 126548021759104 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7311305cbaa0>` 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`. I0416 13:12:50.410278 126548021759104 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x73112ff67b60>` 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`. I0416 13:12:50.410307 126548021759104 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 0x7311305cbaa0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7311305cbaa0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x73112ff67b60>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x73112ff67b60>}). I0416 13:12:50.410598 126548021759104 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.28 I0416 13:12:50.410649 126548021759104 async_checkpointer.py:177] [process=0][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>.<lambda> at 0x73112f131080> timeout: 600 secs and primary_host=0 for async checkpoint writes I0416 13:12:50.542996 126548021759104 checkpoint_manager.py:1788] Found 0 checkpoint steps in gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints I0416 13:12:50.543248 126548021759104 checkpoint_manager.py:921] [process=0][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_hns=False, 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=10), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False), root_directory=gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x73112f13dfd0> I0416 13:12:50.543324 126548021759104 checkpointing.py:301] Checkpoint manager created! W0416 13:12:50.559501 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 13:12:50.738502 126548021759104 nnx_wrappers.py:437] Unknown Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0416 13:12:50.738717 126548021759104 nnx_wrappers.py:437] Unknown Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 13:12:50.829035 126548021759104 attentions.py:1088] attentions/inputs_q Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0416 13:12:50.829126 126548021759104 attentions.py:1088] attentions/inputs_q Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 13:12:50.843394 126548021759104 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[8,2048,2048]....................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0416 13:12:50.843441 126548021759104 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[8,2048,2048]....................................... ('fsdp', None, None). I0416 13:12:50.864184 126548021759104 attentions.py:1154] attentions/query Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0416 13:12:50.864236 126548021759104 attentions.py:1154] attentions/query Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 13:12:50.878452 126548021759104 attentions.py:1155] attentions/key Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0416 13:12:50.878502 126548021759104 attentions.py:1155] attentions/key Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 13:12:50.892747 126548021759104 attentions.py:1156] attentions/value Logical: bfloat16[8,2048,16,128]..................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0416 13:12:50.892796 126548021759104 attentions.py:1156] attentions/value Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 13:12:50.914760 126548021759104 attentions.py:1197] attentions/out Logical: bfloat16[8,2048,16,128]..................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0416 13:12:50.914815 126548021759104 attentions.py:1197] attentions/out Physical: bfloat16[8,2048,16,128]..................................... ('fsdp', None, None, None). I0416 13:12:50.933000 126548021759104 linears.py:525] linears/x Logical: bfloat16[8,2048,7168]....................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0416 13:12:50.933061 126548021759104 linears.py:525] linears/x Physical: bfloat16[8,2048,7168]....................................... ('fsdp', None, None). I0416 13:12:51.114853 126548021759104 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0416 13:12:51.114946 126548021759104 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. W0416 13:12:51.165861 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. [DECOUPLED NO-OP] gcs_storage: using stubs. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] mldiagnostics: using stub. [DECOUPLED NO-OP] workload_monitor: using stub. [DECOUPLED NO-OP] vertex_tensorboard: using stub. fsdp: 8 I0416 13:12:51.543303 126548021759104 maxtext_utils.py:1620] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0416 13:12:51.543411 126548021759104 maxtext_utils.py:1620] params/params/decoder/layers/mlp/wi_0/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0416 13:12:51.543451 126548021759104 maxtext_utils.py:1620] params/params/decoder/layers/mlp/wi_1/kernel Shape: float32[2048,16,7168] Logical: P('embed', 'layers', 'mlp') Physical: ('fsdp', None, None) I0416 13:12:51.543493 126548021759104 maxtext_utils.py:1620] params/params/decoder/layers/mlp/wo/kernel Shape: float32[7168,16,2048] Logical: P('mlp', 'layers', 'embed') Physical: (None, None, 'fsdp') I0416 13:12:51.543532 126548021759104 maxtext_utils.py:1620] params/params/decoder/layers/post_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0416 13:12:51.543559 126548021759104 maxtext_utils.py:1620] params/params/decoder/layers/pre_self_attention_layer_norm/scale Shape: float32[2048,16] Logical: P('norm', 'layers') Physical: (None, None) I0416 13:12:51.543606 126548021759104 maxtext_utils.py:1620] 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) I0416 13:12:51.543646 126548021759104 maxtext_utils.py:1620] 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') I0416 13:12:51.543674 126548021759104 maxtext_utils.py:1620] 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) I0416 13:12:51.543700 126548021759104 maxtext_utils.py:1620] 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) I0416 13:12:51.543735 126548021759104 maxtext_utils.py:1620] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0416 13:12:51.543768 126548021759104 maxtext_utils.py:1620] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0416 13:12:51.962566 126548021759104 train.py:155] train/xent Logical: float32[8,2048]............................................. ('activation_embed_and_logits_batch', 'activation_length'). I0416 13:12:51.962648 126548021759104 train.py:155] train/xent Physical: float32[8,2048]............................................. ('fsdp', None). I0416 13:12:51.976177 126548021759104 train.py:162] train/z_loss Logical: float32[8,2048]............................................. ('activation_embed_and_logits_batch', 'activation_length'). I0416 13:12:51.976229 126548021759104 train.py:162] train/z_loss Physical: float32[8,2048]............................................. ('fsdp', None). W0416 13:12:52.578064 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 13:12:52.703635 126548021759104 max_utils.py:791] Total memory size: 3.6 GB, Output size: 1.5 GB, Temp size: 2.0 GB, Argument size: 1.5 GB, Host temp size: 0.0 GB. I0416 13:12:52.704116 126548021759104 max_utils.py:194] tensorboardX not available; using no-op SummaryWriter. I0416 13:12:52.704252 126548021759104 metric_logger.py:289] number parameters: 1.104 billion W0416 13:12:53.537066 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 13:12:53.633864 126548021759104 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0416 13:12:53.750961 126548021759104 checkpointing.py:776] Waited 0.11708474159240723 seconds for step 0 to finish before starting checkpointing. I0416 13:12:53.751420 126548021759104 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 13:12:53.751574 126548021759104 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 0 I0416 13:12:53.751944 126548021759104 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0. I0416 13:12:53.844645 126548021759104 signaling_client.py:373] Using ThreadSafeKeyValueSignalingClient I0416 13:12:53.941276 126548021759104 jax_array_handlers.py:347] Scheduling D2H of 39 prioritized jax.Array. I0416 13:12:53.941420 126440561444416 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0 I0416 13:12:53.941825 126548021759104 replica_slices.py:410] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False W0416 13:12:54.158121 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 13:12:54.169186 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 13:12:54.175522 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 13:12:54.185696 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 13:12:54.199885 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 13:12:54.213572 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 13:12:54.219728 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 13:12:54.224926 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 13:12:54.651411 126440550958656 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0/items I0416 13:12:54.791453 126440519501376 checkpoint.py:188] Wrote Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776345174544131959, 'commit_timestamp_nsecs': None, 'custom_metadata': {}}, json={"item_handlers": null, "metrics": {}, "performance_metrics": {}, "init_timestamp_nsecs": 1776345174544131959, "commit_timestamp_nsecs": null, "custom_metadata": {}} to gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0/_CHECKPOINT_METADATA I0416 13:12:55.044742 126548021759104 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 1.104360s I0416 13:12:55.045169 126548021759104 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 10.291 GiB/s (total gbytes: 12.3 GiB) (time elapsed: a second) (per-host) I0416 13:12:55.045220 126548021759104 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 1.199318s (batch_requests_ready=0.090783s, total_serialization_initiated=1.108207s, others=0.000329s) I0416 13:12:55.045278 126548021759104 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.200151s (all_items=0.000020s, per_item={'items': '0.00001955'}, temp_paths=1.200132) I0416 13:12:55.045988 126440498529856 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0416 13:12:55.046092 126548021759104 async_checkpointer.py:561] Finished blocking save. Time taken: 1.294471s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0. I0416 13:12:55.046275 126548021759104 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0416 13:12:55.046447 126440571930176 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0416 13:12:55.046550 126548021759104 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776345173.751408, 'wait_for_prev_duration_secs': 4.0531158447265625e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776345173.7516022, 'checkpointer_blocking_duration_secs': 1.2946014404296875, 'get_old_steps_start_time': 1776345175.0462215, 'get_old_steps_duration_secs': 2.0503997802734375e-05, 'checkpoint_manager_blocking_start_time': 1776345173.7513258, 'checkpoint_manager_blocking_duration_secs': 1.2951982021331787} I0416 13:12:55.046658 126548021759104 checkpointing.py:408] Started an asynchronous checkpoint save for step 0 I0416 13:12:55.046696 126548021759104 max_utils.py:750] Memstats: After params initialized: I0416 13:12:55.046770 126548021759104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_0(process=0,(0,0,0,0)) I0416 13:12:55.046796 126548021759104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_1(process=0,(1,0,0,0)) I0416 13:12:55.046815 126548021759104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_2(process=0,(0,1,0,0)) I0416 13:12:55.046832 126548021759104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_3(process=0,(1,1,0,0)) I0416 13:12:55.046855 126548021759104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_4(process=0,(0,2,0,0)) I0416 13:12:55.046873 126548021759104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_5(process=0,(1,2,0,0)) I0416 13:12:55.046890 126548021759104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_6(process=0,(0,3,0,0)) I0416 13:12:55.046905 126548021759104 max_utils.py:756] Using (GB) 1.59 / 31.25 (5.088000%) on TPU_7(process=0,(1,3,0,0)) W0416 13:12:55.052506 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 13:12:55.058356 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. W0416 13:12:55.063276 3856933 pjrt_executable.cc:642] Assume version compatibility. PjRt-IFRT does not track XLA executable versions. I0416 13:12:55.165989 3859099 google_auth_provider.cc:149] Using credentials at ~/.config/gcloud/application_default_credentials.json I0416 13:12:55.166064 3859099 google_auth_provider.cc:156] Using OAuth2 AuthProvider I0416 13:12:55.408700 126548021759104 metric_logger.py:185] completed step: 0, seconds: 0.929, TFLOP/s/device: 14.623, Tokens/s/device: 2204.179, total_weights: 16384, loss: 10.874 I0416 13:12:55.409728 126548021759104 metric_logger.py:269] To see full metrics 'tensorboard --logdir=gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/tensorboard/' I0416 13:12:55.524522 126548021759104 metric_logger.py:185] completed step: 1, seconds: 1.773, TFLOP/s/device: 7.664, Tokens/s/device: 1155.244, total_weights: 16384, loss: 10.874 I0416 13:12:55.643238 126548021759104 metric_logger.py:185] completed step: 2, seconds: 0.007, TFLOP/s/device: 1975.448, Tokens/s/device: 297760.977, total_weights: 16384, loss: 9.775 I0416 13:12:55.762150 126548021759104 metric_logger.py:185] completed step: 3, seconds: 0.117, TFLOP/s/device: 116.600, Tokens/s/device: 17575.175, total_weights: 16384, loss: 8.838 I0416 13:12:55.996293 126440540472896 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0/items/array_metadatas/process_0 I0416 13:13:15.421543 126548021759104 metric_logger.py:185] completed step: 4, seconds: 0.119, TFLOP/s/device: 114.595, Tokens/s/device: 17273.080, total_weights: 16384, loss: 7.965 I0416 13:13:15.428908 126548021759104 metric_logger.py:185] completed step: 5, seconds: 0.119, TFLOP/s/device: 114.062, Tokens/s/device: 17192.602, total_weights: 16384, loss: 7.233 I0416 13:13:15.545884 126548021759104 metric_logger.py:185] completed step: 6, seconds: 19.660, TFLOP/s/device: 0.691, Tokens/s/device: 104.170, total_weights: 16384, loss: 6.676 I0416 13:13:15.664312 126548021759104 metric_logger.py:185] completed step: 7, seconds: 0.005, TFLOP/s/device: 2903.853, Tokens/s/device: 437700.363, total_weights: 16384, loss: 6.293 I0416 13:13:15.782961 126548021759104 metric_logger.py:185] completed step: 8, seconds: 0.118, TFLOP/s/device: 115.312, Tokens/s/device: 17381.120, total_weights: 16384, loss: 6.055 I0416 13:13:15.901223 126548021759104 checkpointing.py:772] Waiting for step 9 to finish before checkpoint... I0416 13:13:15.902075 126548021759104 checkpointing.py:776] Waited 0.0008802413940429688 seconds for step 9 to finish before starting checkpointing. I0416 13:13:15.902331 126548021759104 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0416 13:13:24.921638 126440509015616 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 29.758655s (commit=29.275246s, array_metadata_write=0.483409s) I0416 13:13:24.922673 126440498529856 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 406.632 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 31 seconds) (per-host) I0416 13:13:24.922777 126440498529856 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 29.876638s. I0416 13:13:25.169290 126440498529856 checkpoint.py:228] Read Metadata={'item_handlers': None, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776345174544131959, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} from gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0/_CHECKPOINT_METADATA I0416 13:13:25.368488 126440498529856 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0416 13:13:25.559220 126440519501376 checkpoint.py:247] Updated Metadata={'item_handlers': {'items': 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler'}, 'metrics': {}, 'performance_metrics': {}, 'init_timestamp_nsecs': 1776345174544131959, 'commit_timestamp_nsecs': None, 'custom_metadata': {}} to gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0/_CHECKPOINT_METADATA I0416 13:13:25.818826 126440498529856 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0416 13:13:25.819464 126440498529856 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.601813s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0/items I0416 13:13:25.820118 126440498529856 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0/items I0416 13:13:26.076198 126440498529856 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0 I0416 13:13:26.765753 126440498529856 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0`. I0416 13:13:26.766386 126440498529856 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 33.014771s. directory=gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/0 I0416 13:13:26.766461 126440498529856 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 31.720323s. I0416 13:13:26.766631 126440571930176 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0416 13:13:26.766747 126440571930176 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0416 13:13:26.766805 126440571930176 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0416 13:13:26.766854 126440571930176 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0416 13:13:26.766947 126548021759104 checkpoint_manager.py:2006] [process=0][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0416 13:13:26.767018 126548021759104 checkpoint_manager.py:1441] Waiting for previous save to complete took 10.864694 seconds. If this number is high, consider checkpointing less frequently. I0416 13:13:26.767726 126548021759104 checkpoint_manager.py:1501] [process=0] Saving checkpoint at step 9 I0416 13:13:26.768013 126548021759104 async_checkpointer.py:452] [process=0] Started async saving checkpoint to gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/9. I0416 13:13:26.946711 126548021759104 jax_array_handlers.py:347] Scheduling D2H of 39 prioritized jax.Array. I0416 13:13:26.946802 126548021759104 replica_slices.py:410] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False I0416 13:13:26.950309 126440571930176 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/9 I0416 13:13:27.684839 126440561444416 atomicity.py:137] Creating tmp directory gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/9/items I0416 13:13:37.131621 126548021759104 base_pytree_checkpoint_handler.py:153] [process=0][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 10.185308s I0416 13:13:37.135937 126548021759104 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/blocking_gbytes_per_sec: 1.201 GiB/s (total gbytes: 12.3 GiB) (time elapsed: 10 seconds) (per-host) I0416 13:13:37.135996 126548021759104 base_pytree_checkpoint_handler.py:732] [process=0][thread=MainThread] Initiated Pytree async_save. Time taken: 10.276965s (batch_requests_ready=0.083918s, total_serialization_initiated=10.188843s, others=0.004205s) I0416 13:13:37.136086 126548021759104 composite_checkpoint_handler.py:715] [process=0][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 10.277744s (all_items=0.000018s, per_item={'items': '0.00001764'}, temp_paths=10.277726) I0416 13:13:37.137654 126440571930176 async_checkpointer.py:79] [process=0][thread=async_save] Background save thread started. I0416 13:13:37.137758 126548021759104 async_checkpointer.py:561] Finished blocking save. Time taken: 10.369981s. Continuing background save to gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/9. I0416 13:13:37.137994 126548021759104 checkpoint_manager.py:1549] [process=0][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0416 13:13:37.138154 126440498529856 async_checkpointer.py:265] [process=0][thread=save_finalize] Waiting for background save thread=async_save. I0416 13:13:37.138244 126548021759104 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776345195.9023, 'wait_for_prev_duration_secs': 10.864693880081177, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776345206.7677498, 'checkpointer_blocking_duration_secs': 10.370151281356812, 'get_old_steps_start_time': 1776345217.1379209, 'get_old_steps_duration_secs': 3.170967102050781e-05, 'checkpoint_manager_blocking_start_time': 1776345195.9022593, 'checkpoint_manager_blocking_duration_secs': 21.235954999923706} I0416 13:13:37.138331 126548021759104 checkpointing.py:408] Started an asynchronous checkpoint save for step 9 I0416 13:13:37.138365 126548021759104 checkpoint_manager.py:1994] [process=0][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0416 13:13:37.899403 126440540472896 array_metadata_store.py:203] [process=0][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/9/items/array_metadatas/process_0 I0416 13:14:11.488225 126440561444416 base_pytree_checkpoint_handler.py:1217] [process=0][thread=write_metadata_after_commits] Commit + Array metadata written. Time taken: 34.351403s (commit=33.904584s, array_metadata_write=0.446819s) I0416 13:14:11.489335 126440571930176 base_pytree_checkpoint_handler.py:128] [process=0] /jax/checkpoint/write/gbytes_per_sec: 283.144 MiB/s (total gbytes: 12.3 GiB) (time elapsed: 44 seconds) (per-host) I0416 13:14:11.489448 126440571930176 async_checkpointer.py:90] [process=0][thread=async_save] 3 Handler Commit operations completed. Time taken: 34.351633s. I0416 13:14:11.933846 126440571930176 array_metadata_store.py:367] [process=0][thread=async_save] Skipped cross-host ArrayMetadata validation because only one process is found: process_index=0. I0416 13:14:12.341196 126440571930176 ocdbt_utils.py:56] Param validation support for Zarr3 will be added later (b/362328389). I0416 13:14:12.341892 126440571930176 base_pytree_checkpoint_handler.py:1342] [process=0][thread=async_save] Pytree save finalize (merge_ocdbt + ArrayMetadata validation) completed. Time taken: 0.556726s. use_zarr3=True, enable_post_merge_validation=True, directory=gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/9/items I0416 13:14:12.342571 126440571930176 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/9/items I0416 13:14:12.580826 126440571930176 atomicity.py:608] Finalizing gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/9 I0416 13:14:13.296232 126440571930176 atomicity.py:794] [process=0][thread=async_save] Finished saving checkpoint (finalized tmp dir) to `gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/9`. I0416 13:14:13.297440 126440571930176 async_checkpointer.py:420] Finished async_save (blocking + background). Time taken: 46.529675s. directory=gs://wanglance-maxtext/linen_ckpt_main_20260416_123638/linen_main_20260416_123638_11_optimizer_offload_false/checkpoints/9 I0416 13:14:13.297522 126440571930176 async_checkpointer.py:144] [process=0][thread=async_save] Background save thread done. Time taken: 36.159710s. I0416 13:14:13.297660 126440498529856 async_checkpointer.py:273] [process=0][thread=save_finalize] Done with waiting for background save thread=async_save. I0416 13:14:13.297710 126440498529856 async_checkpointer.py:283] [process=0][thread=save_finalize] No errors found in background save thread=async_save. I0416 13:14:13.297765 126440498529856 checkpoint_manager.py:2103] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0416 13:14:13.297804 126440498529856 checkpoint_manager.py:2112] [process=0][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0416 13:14:13.298063 126548021759104 checkpoint_manager.py:2006] [process=0][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9. I0416 13:14:13.298200 126548021759104 checkpoint_manager.py:1983] [process=0][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0416 13:14:13.298826 126548021759104 metric_logger.py:185] completed step: 9, seconds: 0.119, TFLOP/s/device: 114.582, Tokens/s/device: 17271.041, total_weights: 16384, loss: 5.915 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops