XPK Start: Thu Apr 23 13:02:09 UTC 2026
PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used.
`rope_parameters`'s factor field must be a float >= 1, got 40
`rope_parameters`'s beta_fast field must be a float, got 32
`rope_parameters`'s beta_slow field must be a float, got 1
DeepseekV32Config got `key=rope_scaling` in kwargs but hasn't set it as attribute. For RoPE standardization you need to set `self.rope_parameters` in model's config.
2026-04-23 13:02:34.653219: 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)
I0423 13:02:34.865994 138330628175680 max_utils.py:273] Attempting to initialize the jax distributed system...
I0423 13:02:43.908617 138330628175680 distributed.py:149] Starting JAX distributed service on [::]:8482
I0423 13:02:43.910939 138330628175680 distributed.py:172] Connecting to JAX distributed service on mt-07-eval-lxpnw-slice-job-0-0.mt-07-eval-lxpnw:8482
I0423 13:02:44.779916 138330628175680 max_utils.py:284] Jax distributed system initialized!
I0423 13:02:50.995810 138330628175680 max_utils.py:800] System Information: Jax Version: 0.9.2
I0423 13:02:50.995918 138330628175680 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0423 13:02:50.995959 138330628175680 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
I0423 13:02:50.995996 138330628175680 train_utils.py:391] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0423 13:02:51.700457 138330628175680 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0423 13:02:51.701040 138330628175680 maxtext_utils.py:1771] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0423 13:02:51.701235 138330628175680 checkpointing.py:688] Setting up checkpoint logger...
I0423 13:02:51.701288 138330628175680 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True
I0423 13:02:51.701336 138330628175680 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0423 13:02:51.701671 138330628175680 base_pytree_checkpoint_handler.py:441] 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 0x7dcf153f2600>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0423 13:02:54.582868 138330628175680 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0423 13:02:54.583119 138330628175680 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 0x7dbae0556270>}, handler_registry=None
I0423 13:02:54.583362 138330628175680 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7dbae0556270>` 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`.
I0423 13:02:54.583411 138330628175680 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7dbae0558410>` 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`.
I0423 13:02:54.583447 138330628175680 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 0x7dbae0556270>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7dbae0556270>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7dbae0558410>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7dbae0558410>}).
I0423 13:02:54.583765 138330628175680 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0423 13:02:54.583836 138330628175680 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7dbae026dd00> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0423 13:02:55.520936 138330628175680 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints
I0423 13:02:55.960759 138330628175680 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=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, lightweight_initialize=False), root_directory=gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7dbae0555970>
I0423 13:02:55.960932 138330628175680 checkpointing.py:302] Checkpoint manager created!
I0423 13:02:56.896082 138330628175680 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0423 13:02:56.896207 138330628175680 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0423 13:02:57.276048 138330628175680 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0423 13:02:57.276154 138330628175680 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0423 13:02:57.293016 138330628175680 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0423 13:02:57.293077 138330628175680 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0423 13:02:57.317359 138330628175680 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 13:02:57.317428 138330628175680 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 13:02:57.334361 138330628175680 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 13:02:57.334425 138330628175680 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 13:02:57.351207 138330628175680 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0423 13:02:57.351268 138330628175680 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 13:02:57.376478 138330628175680 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0423 13:02:57.376548 138330628175680 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0423 13:02:57.398467 138330628175680 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0423 13:02:57.398590 138330628175680 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0423 13:02:57.627866 138330628175680 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0423 13:02:57.627984 138330628175680 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0423 13:02:59.065011 138330628175680 maxtext_utils.py:1880] params/params/decoder/decoder_norm/scale
Shape: float32[2048]
Logical: P('norm',)
Physical: (None,)
I0423 13:02:59.065184 138330628175680 maxtext_utils.py:1880] params/params/decoder/layers/mlp/wi_0/kernel
Shape: float32[2048,16,7168]
Logical: P('embed', 'layers', 'mlp')
Physical: ('fsdp', None, None)
I0423 13:02:59.065242 138330628175680 maxtext_utils.py:1880] params/params/decoder/layers/mlp/wi_1/kernel
Shape: float32[2048,16,7168]
Logical: P('embed', 'layers', 'mlp')
Physical: ('fsdp', None, None)
I0423 13:02:59.065300 138330628175680 maxtext_utils.py:1880] params/params/decoder/layers/mlp/wo/kernel
Shape: float32[7168,16,2048]
Logical: P('mlp', 'layers', 'embed')
Physical: (None, None, 'fsdp')
I0423 13:02:59.065359 138330628175680 maxtext_utils.py:1880] params/params/decoder/layers/post_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: P('norm', 'layers')
Physical: (None, None)
I0423 13:02:59.065399 138330628175680 maxtext_utils.py:1880] params/params/decoder/layers/pre_self_attention_layer_norm/scale
Shape: float32[2048,16]
Logical: P('norm', 'layers')
Physical: (None, None)
I0423 13:02:59.065452 138330628175680 maxtext_utils.py:1880] 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)
I0423 13:02:59.065504 138330628175680 maxtext_utils.py:1880] 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')
I0423 13:02:59.065550 138330628175680 maxtext_utils.py:1880] 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)
I0423 13:02:59.065587 138330628175680 maxtext_utils.py:1880] 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)
I0423 13:02:59.065634 138330628175680 maxtext_utils.py:1880] params/params/decoder/logits_dense/kernel
Shape: float32[2048,32000]
Logical: P('embed_vocab', 'vocab')
Physical: ('fsdp', None)
I0423 13:02:59.065685 138330628175680 maxtext_utils.py:1880] params/params/token_embedder/embedding
Shape: float32[32000,2048]
Logical: P('vocab', 'embed_vocab')
Physical: (None, 'fsdp')
I0423 13:02:59.562580 138330628175680 train.py:157] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0423 13:02:59.562670 138330628175680 train.py:157] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0423 13:02:59.578641 138330628175680 train.py:164] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0423 13:02:59.578701 138330628175680 train.py:164] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0423 13:03:10.637065 138330628175680 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.
I0423 13:03:10.637828 138330628175680 metric_logger.py:301] number parameters: 1.104 billion
I0423 13:03:21.922952 138330628175680 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0423 13:03:22.076352 138330628175680 checkpointing.py:798] Waited 0.15337872505187988 seconds for step 0 to finish before starting checkpointing.
I0423 13:03:22.078953 138330628175680 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 13:03:22.080853 138330628175680 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0
I0423 13:03:22.082234 138330628175680 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints/0.
I0423 13:03:22.379770 138330628175680 signaling_client.py:364] Using JaxDistributedSignalingClient
I0423 13:03:22.380852 138330628175680 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0423 13:03:22.380909 138330628175680 replica_slices.py:424] 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
I0423 13:03:22.656173 138330628175680 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.276473s
I0423 13:03:22.656352 138330628175680 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.469 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2820546627044678 s) (per-host)
I0423 13:03:22.656409 138330628175680 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.282121s (batch_requests_ready=0.002196s, total_serialization_initiated=0.279850s, others=0.000075s)
I0423 13:03:22.656503 138330628175680 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.286208s (all_items=0.000018s, per_item={'items': '0.00001764'}, temp_paths=0.286190)
I0423 13:03:22.657341 138330628175680 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.58 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints/0.
I0423 13:03:22.657660 138204542813952 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 13:23:22.657622
I0423 13:03:22.665813 138330628175680 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 13:03:22.666116 138202467768064 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0423 13:03:22.666274 138330628175680 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776949402.0789344, 'wait_for_prev_duration_secs': 6.031990051269531e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776949402.080894, 'checkpointer_blocking_duration_secs': 0.5769147872924805, 'get_old_steps_start_time': 1776949402.6578383, 'get_old_steps_duration_secs': 3.0040740966796875e-05, 'checkpoint_manager_blocking_start_time': 1776949402.076884, 'checkpoint_manager_blocking_duration_secs': 0.5893502235412598}
I0423 13:03:22.666389 138330628175680 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0423 13:03:22.666441 138330628175680 max_utils.py:750]
Memstats: After params initialized:
I0423 13:03:22.666491 138330628175680 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0))
I0423 13:03:22.666522 138330628175680 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0))
I0423 13:03:22.666551 138330628175680 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0))
I0423 13:03:22.666576 138330628175680 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0))
I0423 13:03:22.977179 138330628175680 metric_logger.py:196] completed step: 0, seconds: 11.285, TFLOP/s/device: 1.204, Tokens/s/device: 181.480, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0423 13:03:23.163146 138330628175680 metric_logger.py:196] completed step: 1, seconds: 1.053, TFLOP/s/device: 12.906, Tokens/s/device: 1945.372, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0423 13:03:23.596519 138330628175680 metric_logger.py:196] completed step: 2, seconds: 0.039, TFLOP/s/device: 351.061, Tokens/s/device: 52915.795, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129
I0423 13:03:23.743796 138330628175680 metric_logger.py:196] completed step: 3, seconds: 0.434, TFLOP/s/device: 31.331, Tokens/s/device: 4722.605, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.203
I0423 13:03:24.039028 138330628175680 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.888, Tokens/s/device: 13398.143, total_weights: 65536, loss: 9.277, lm_loss: 9.277, perplexity: 10694.614
I0423 13:03:24.044839 138330628175680 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.225, Tokens/s/device: 13901.144, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.717
I0423 13:03:25.594751 2824 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0423 13:03:27.563305 138202476160768 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints/0/items/array_metadatas/process_6
I0423 13:03:45.818196 138330628175680 metric_logger.py:196] completed step: 6, seconds: 0.296, TFLOP/s/device: 45.966, Tokens/s/device: 6928.446, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.759
I0423 13:03:45.965643 138330628175680 metric_logger.py:196] completed step: 7, seconds: 21.627, TFLOP/s/device: 0.628, Tokens/s/device: 94.696, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4376.905
I0423 13:03:46.112794 138330628175680 metric_logger.py:196] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.468, Tokens/s/device: 13485.662, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3846.406
I0423 13:03:46.259677 138330628175680 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0423 13:03:46.260308 138330628175680 checkpointing.py:798] Waited 0.0006508827209472656 seconds for step 9 to finish before starting checkpointing.
I0423 13:03:46.262310 138330628175680 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0423 13:04:03.984458 138204542813952 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.962 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.61012554168701 s) (per-host)
I0423 13:04:03.984583 138204542813952 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.326813s.
I0423 13:04:09.030485 138204542813952 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 46.372693s.
I0423 13:04:09.030807 138202467768064 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 13:04:09.030930 138202467768064 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0423 13:04:09.030979 138202467768064 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0423 13:04:09.032510 138202467768064 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0423 13:04:09.032694 138330628175680 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0423 13:04:09.032822 138330628175680 checkpoint_manager.py:1452] Waiting for previous save to complete took 22.770514 seconds. If this number is high, consider checkpointing less frequently.
I0423 13:04:09.034588 138330628175680 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9
I0423 13:04:09.036670 138330628175680 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints/9.
I0423 13:04:09.335911 138330628175680 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0423 13:04:09.336008 138330628175680 replica_slices.py:424] 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
I0423 13:04:09.376952 138330628175680 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.042248s
I0423 13:04:09.377126 138330628175680 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 33.763 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04568886756896973 s) (per-host)
I0423 13:04:09.377176 138330628175680 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.045767s (batch_requests_ready=0.001767s, total_serialization_initiated=0.043915s, others=0.000085s)
I0423 13:04:09.377261 138330628175680 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.049864s (all_items=0.000016s, per_item={'items': '0.00001574'}, temp_paths=0.049848)
I0423 13:04:09.377898 138330628175680 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.34 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints/9.
I0423 13:04:09.378256 138202467768064 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-23 13:24:09.378220
I0423 13:04:09.380264 138330628175680 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0423 13:04:09.380505 138203617011456 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0423 13:04:09.380629 138330628175680 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776949426.2622802, 'wait_for_prev_duration_secs': 22.7705135345459, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776949449.0346284, 'checkpointer_blocking_duration_secs': 0.3437788486480713, 'get_old_steps_start_time': 1776949449.3784323, 'get_old_steps_duration_secs': 3.0040740966796875e-05, 'checkpoint_manager_blocking_start_time': 1776949426.260538, 'checkpoint_manager_blocking_duration_secs': 23.12005352973938}
I0423 13:04:09.380743 138330628175680 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0423 13:04:09.380786 138330628175680 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0423 13:04:14.416817 138203625404160 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260423_124541/linen_xpk_feat_nnx_post_train_fixes_20260423_124541_07_eval/checkpoints/9/items/array_metadatas/process_6
I0423 13:04:51.788307 138202467768064 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.205 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.45683670043945 s) (per-host)
I0423 13:04:51.788435 138202467768064 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.410056s.
I0423 13:04:59.209279 138202467768064 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 49.830876s.
I0423 13:04:59.209545 138203617011456 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0423 13:04:59.209666 138203617011456 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0423 13:04:59.209712 138203617011456 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0423 13:04:59.212292 138203617011456 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0423 13:04:59.212463 138330628175680 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0423 13:04:59.212610 138330628175680 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0423 13:04:59.213546 138330628175680 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.157, Tokens/s/device: 13890.867, total_weights: 65536, loss: 8.179, lm_loss: 8.179, perplexity: 3564.635
Per train step:
Total TFLOPs: 13.59
split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Thu Apr 23 13:05:09 UTC 2026
EXIT_CODE=0