MaxView

XPK Start: Sun Apr 19 00:31:36 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 00:32:00.552040: 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 00:32:00.730060 140516397336384 max_utils.py:273] Attempting to initialize the jax distributed system...
I0419 00:32:09.771401 140516397336384 distributed.py:149] Starting JAX distributed service on [::]:8482
I0419 00:32:09.773622 140516397336384 distributed.py:172] Connecting to JAX distributed service on mt-13-scan-layers-true-xr4ns-slice-job-0-0.mt-13-scan-layers-true-xr4ns:8482
I0419 00:32:11.370967 140516397336384 max_utils.py:284] Jax distributed system initialized!
I0419 00:32:17.373416 140516397336384 max_utils.py:800] System Information: Jax Version: 0.9.2
I0419 00:32:17.373521 140516397336384 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0419 00:32:17.373561 140516397336384 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 00:32:17.373600 140516397336384 train_utils.py:378] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0419 00:32:18.071426 140516397336384 maxtext_utils.py:1718] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0419 00:32:18.072012 140516397336384 maxtext_utils.py:1718] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0419 00:32:18.072193 140516397336384 checkpointing.py:688] Setting up checkpoint logger...
I0419 00:32:18.072257 140516397336384 checkpointing.py:234] Creating checkpoint manager with ocdbt=True and zarr3=True
I0419 00:32:18.072302 140516397336384 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0419 00:32:18.072642 140516397336384 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 0x7fcbe4f18410>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0419 00:32:23.192623 140516397336384 checkpointing.py:266] Enabling policy for fixed interval checkpointing.
I0419 00:32:23.192855 140516397336384 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 0x7fb7bc19b860>}, handler_registry=None
I0419 00:32:23.193092 140516397336384 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7fb7bc19b860>` 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 00:32:23.193139 140516397336384 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7fb6e479d6a0>` 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 00:32:23.193176 140516397336384 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 0x7fb7bc19b860>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7fb7bc19b860>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7fb6e479d6a0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7fb6e479d6a0>}).
I0419 00:32:23.193515 140516397336384 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0419 00:32:23.193584 140516397336384 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7fb6e43d7740> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0419 00:32:23.867935 140516397336384 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/linen_xpk_feat_nnx_post_train_fixes_20260418_235007_13_scan_layers_true/checkpoints
I0419 00:32:24.815894 140516397336384 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_20260418_235007/linen_xpk_feat_nnx_post_train_fixes_20260418_235007_13_scan_layers_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7fb6e4798e90>
I0419 00:32:24.816070 140516397336384 checkpointing.py:302] Checkpoint manager created!
I0419 00:32:25.748690 140516397336384 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0419 00:32:25.748797 140516397336384 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0419 00:32:26.129353 140516397336384 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0419 00:32:26.129449 140516397336384 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0419 00:32:26.145767 140516397336384 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0419 00:32:26.145836 140516397336384 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0419 00:32:26.169412 140516397336384 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 00:32:26.169487 140516397336384 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0419 00:32:26.185915 140516397336384 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 00:32:26.185988 140516397336384 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0419 00:32:26.202180 140516397336384 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 00:32:26.202262 140516397336384 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0419 00:32:26.226816 140516397336384 attentions.py:1197] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0419 00:32:26.226892 140516397336384 attentions.py:1197] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0419 00:32:26.247707 140516397336384 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0419 00:32:26.247780 140516397336384 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0419 00:32:26.463079 140516397336384 checkpointing.py:578] checkpoint manager exists so trying to load this run's existing checkpoint
I0419 00:32:26.463188 140516397336384 checkpointing.py:676] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0419 00:32:27.905970 140516397336384 maxtext_utils.py:1827]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0419 00:32:27.906094 140516397336384 maxtext_utils.py:1827]  params/params/decoder/layers/mlp/wi_0/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0419 00:32:27.906147 140516397336384 maxtext_utils.py:1827]  params/params/decoder/layers/mlp/wi_1/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0419 00:32:27.906203 140516397336384 maxtext_utils.py:1827]  params/params/decoder/layers/mlp/wo/kernel
    Shape:     float32[7168,16,2048]
    Logical:   P('mlp', 'layers', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 00:32:27.906270 140516397336384 maxtext_utils.py:1827]  params/params/decoder/layers/post_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  (None, None)
I0419 00:32:27.906311 140516397336384 maxtext_utils.py:1827]  params/params/decoder/layers/pre_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  (None, None)
I0419 00:32:27.906363 140516397336384 maxtext_utils.py:1827]  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 00:32:27.906416 140516397336384 maxtext_utils.py:1827]  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 00:32:27.906455 140516397336384 maxtext_utils.py:1827]  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 00:32:27.906491 140516397336384 maxtext_utils.py:1827]  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 00:32:27.906543 140516397336384 maxtext_utils.py:1827]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)
I0419 00:32:27.906593 140516397336384 maxtext_utils.py:1827]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')
I0419 00:32:28.397409 140516397336384 train.py:157] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0419 00:32:28.397501 140516397336384 train.py:157] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0419 00:32:28.412830 140516397336384 train.py:164] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0419 00:32:28.412893 140516397336384 train.py:164] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0419 00:32:39.491880 140516397336384 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 00:32:39.492611 140516397336384 metric_logger.py:301] number parameters: 1.104 billion
I0419 00:32:50.776613 140516397336384 checkpointing.py:794] Waiting for step 0 to finish before checkpoint...
I0419 00:32:50.930047 140516397336384 checkpointing.py:798] Waited 0.15341591835021973 seconds for step 0 to finish before starting checkpointing.
I0419 00:32:50.932353 140516397336384 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0419 00:32:50.934028 140516397336384 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0
I0419 00:32:50.935451 140516397336384 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/linen_xpk_feat_nnx_post_train_fixes_20260418_235007_13_scan_layers_true/checkpoints/0.
I0419 00:32:51.666898 140516397336384 signaling_client.py:364] Using JaxDistributedSignalingClient
I0419 00:32:51.667816 140516397336384 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0419 00:32:51.667875 140516397336384 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
I0419 00:32:51.945367 140516397336384 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.278545s
I0419 00:32:51.945545 140516397336384 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.433 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28393983840942383 s) (per-host)
I0419 00:32:51.945602 140516397336384 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.284006s (batch_requests_ready=0.002181s, total_serialization_initiated=0.281750s, others=0.000075s)
I0419 00:32:51.945701 140516397336384 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.288085s (all_items=0.000018s, per_item={'items': '0.00001812'}, temp_paths=0.288067)
I0419 00:32:51.946526 140516397336384 event_tracking.py:125] [process=6] [async] Finished blocking save in 1.01 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/linen_xpk_feat_nnx_post_train_fixes_20260418_235007_13_scan_layers_true/checkpoints/0.
I0419 00:32:51.946863 140388226324224 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-19 00:52:51.946826
I0419 00:32:51.954807 140516397336384 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0419 00:32:51.955080 140386076976896 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0419 00:32:51.955247 140516397336384 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/linen_xpk_feat_nnx_post_train_fixes_20260418_235007_13_scan_layers_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776558770.9323332, 'wait_for_prev_duration_secs': 6.008148193359375e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776558770.9340672, 'checkpointer_blocking_duration_secs': 1.0129468441009521, 'get_old_steps_start_time': 1776558771.9470413, 'get_old_steps_duration_secs': 3.0517578125e-05, 'checkpoint_manager_blocking_start_time': 1776558770.93056, 'checkpoint_manager_blocking_duration_secs': 1.0246365070343018}
I0419 00:32:51.955359 140516397336384 checkpointing.py:409] Started an asynchronous checkpoint save for step 0
I0419 00:32:51.955411 140516397336384 max_utils.py:750] 
Memstats: After params initialized:
I0419 00:32:51.955461 140516397336384 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0))
I0419 00:32:51.955494 140516397336384 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0))
I0419 00:32:51.955523 140516397336384 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0))
I0419 00:32:51.955549 140516397336384 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0))
I0419 00:32:52.270311 140516397336384 metric_logger.py:196] completed step: 0, seconds: 11.284, TFLOP/s/device: 1.204, Tokens/s/device: 181.498, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0419 00:32:52.444163 140516397336384 metric_logger.py:196] completed step: 1, seconds: 1.492, TFLOP/s/device: 9.106, Tokens/s/device: 1372.530, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0419 00:32:52.843768 140516397336384 metric_logger.py:196] completed step: 2, seconds: 0.027, TFLOP/s/device: 508.500, Tokens/s/device: 76646.707, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129
I0419 00:32:52.991138 140516397336384 metric_logger.py:196] completed step: 3, seconds: 0.400, TFLOP/s/device: 33.979, Tokens/s/device: 5121.652, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.203
I0419 00:32:53.287596 140516397336384 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.848, Tokens/s/device: 13392.098, total_weights: 65536, loss: 9.277, lm_loss: 9.277, perplexity: 10694.614
I0419 00:32:53.293563 140516397336384 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.273, Tokens/s/device: 13908.414, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.717
I0419 00:32:56.113187    2855 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0419 00:32:59.900738 140386589161216 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_20260418_235007/linen_xpk_feat_nnx_post_train_fixes_20260418_235007_13_scan_layers_true/checkpoints/0/items/array_metadatas/process_6
I0419 00:33:15.519978 140516397336384 metric_logger.py:196] completed step: 6, seconds: 0.297, TFLOP/s/device: 45.742, Tokens/s/device: 6894.764, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.759
I0419 00:33:15.667191 140516397336384 metric_logger.py:196] completed step: 7, seconds: 22.080, TFLOP/s/device: 0.615, Tokens/s/device: 92.755, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4376.905
I0419 00:33:15.814490 140516397336384 metric_logger.py:196] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.329, Tokens/s/device: 13464.649, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3846.406
I0419 00:33:15.961328 140516397336384 checkpointing.py:794] Waiting for step 9 to finish before checkpoint...
I0419 00:33:15.961954 140516397336384 checkpointing.py:798] Waited 0.0006556510925292969 seconds for step 9 to finish before starting checkpointing.
I0419 00:33:15.964012 140516397336384 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0419 00:33:29.084940 140388226324224 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 42.209 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.42328143119812 s) (per-host)
I0419 00:33:29.085063 140388226324224 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.138086s.
I0419 00:33:39.044190 140388226324224 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 47.097196s.
I0419 00:33:39.044419 140386076976896 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0419 00:33:39.044476 140386076976896 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0419 00:33:39.044533 140386076976896 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0419 00:33:39.046529 140386076976896 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0419 00:33:39.046687 140516397336384 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.
W0419 00:33:39.046825 140516397336384 checkpoint_manager.py:1452] Waiting for previous save to complete took 23.082813 seconds. If this number is high, consider checkpointing less frequently.
I0419 00:33:39.048637 140516397336384 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9
I0419 00:33:39.050704 140516397336384 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/linen_xpk_feat_nnx_post_train_fixes_20260418_235007_13_scan_layers_true/checkpoints/9.
I0419 00:33:39.774292 140516397336384 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0419 00:33:39.774388 140516397336384 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
I0419 00:33:39.809089 140516397336384 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.036013s
I0419 00:33:39.809257 140516397336384 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 39.080 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.039472341537475586 s) (per-host)
I0419 00:33:39.809310 140516397336384 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.039546s (batch_requests_ready=0.001816s, total_serialization_initiated=0.037649s, others=0.000081s)
I0419 00:33:39.809405 140516397336384 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.043755s (all_items=0.000016s, per_item={'items': '0.00001645'}, temp_paths=0.043738)
I0419 00:33:39.810059 140516397336384 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.76 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/linen_xpk_feat_nnx_post_train_fixes_20260418_235007_13_scan_layers_true/checkpoints/9.
I0419 00:33:39.810401 140386076976896 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-19 00:53:39.810364
I0419 00:33:39.812366 140516397336384 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0419 00:33:39.812601 140386589161216 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save.
I0419 00:33:39.812732 140516397336384 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_feat_nnx_post_train_fixes_20260418_235007/linen_xpk_feat_nnx_post_train_fixes_20260418_235007_13_scan_layers_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776558795.9639816, 'wait_for_prev_duration_secs': 23.082812547683716, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776558819.0486774, 'checkpointer_blocking_duration_secs': 0.7618741989135742, 'get_old_steps_start_time': 1776558819.8105772, 'get_old_steps_duration_secs': 3.075599670410156e-05, 'checkpoint_manager_blocking_start_time': 1776558795.9621737, 'checkpoint_manager_blocking_duration_secs': 23.850522756576538}
I0419 00:33:39.812843 140516397336384 checkpointing.py:409] Started an asynchronous checkpoint save for step 9
I0419 00:33:39.812887 140516397336384 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0419 00:33:46.079335 140365948503808 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_20260418_235007/linen_xpk_feat_nnx_post_train_fixes_20260418_235007_13_scan_layers_true/checkpoints/9/items/array_metadatas/process_6
I0419 00:34:20.564414 140386076976896 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 38.721 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 40.79461336135864 s) (per-host)
I0419 00:34:20.564521 140386076976896 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 40.754005s.
I0419 00:34:30.617685 140386076976896 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 50.807154s.
I0419 00:34:30.617963 140386589161216 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save.
I0419 00:34:30.618087 140386589161216 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save.
I0419 00:34:30.618137 140386589161216 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0419 00:34:30.619900 140386589161216 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0419 00:34:30.620076 140516397336384 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.
I0419 00:34:30.620224 140516397336384 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0419 00:34:30.621255 140516397336384 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.250, Tokens/s/device: 13904.920, 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: Sun Apr 19 00:34:41 UTC 2026
EXIT_CODE=0