MaxView

Timing Test Reference Updates
‹ 10_shardy_falseCase: 11_optimizer_offload_true13_scan_layers_false ›

Metrics: main (59e0f1759) vs test/pipeline-scan-nnx (5b21b66fc)

Metricmain  59e0f1759test/pipeline-scan-nnx  5b21b66fcDiff (test/pipeline-scan-nnx − main)
Parameters1.104 billion1.104 billion—
Final loss8.17908.17900
TFLOP/s83.23083.558+0.328
Tok/s12545.412594.8+49.377
Avg s/step2.7452.652-0.093
Memory %0.540.540
JAX0.9.20.9.2—

Diff = branch value − main value. Green = branch improved. Red = branch regressed.

main  ·  59e0f1759  ·  main_20260425_071456  ·  full log 
XPK Start: Sat Apr 25 07:47:51 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. 
2026-04-25 07:48:15.984113: 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)
I0425 07:48:16.187246 135055182722880 max_utils.py:273] Attempting to initialize the jax distributed system...
I0425 07:48:25.227658 135055182722880 distributed.py:149] Starting JAX distributed service on [::]:8482
I0425 07:48:25.230094 135055182722880 distributed.py:172] Connecting to JAX distributed service on mt-11-optimizer-offload-fpkb1-slice-job-0-0.mt-11-optimizer-offload-fpkb1:8482
I0425 07:48:26.244797 135055182722880 max_utils.py:284] Jax distributed system initialized!
I0425 07:48:32.414572 135055182722880 max_utils.py:800] System Information: Jax Version: 0.9.2
I0425 07:48:32.414678 135055182722880 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0425 07:48:32.414718 135055182722880 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
I0425 07:48:32.414754 135055182722880 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0425 07:48:33.114988 135055182722880 maxtext_utils.py:1604] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1)
I0425 07:48:33.115268 135055182722880 checkpointing.py:677] Setting up checkpoint logger...
I0425 07:48:33.115326 135055182722880 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0425 07:48:33.115370 135055182722880 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0425 07:48:33.115705 135055182722880 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 0x7ad444950980>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0425 07:48:35.973144 135055182722880 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0425 07:48:35.973391 135055182722880 checkpoint_manager.py:708] [process=3][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ac06c5602f0>}, handler_registry=None
I0425 07:48:35.973634 135055182722880 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ac06c5602f0>` 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`.
I0425 07:48:35.973685 135055182722880 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ac06c561c10>` 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`.
I0425 07:48:35.973721 135055182722880 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 0x7ac06c5602f0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ac06c5602f0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ac06c561c10>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ac06c561c10>}).
I0425 07:48:35.974053 135055182722880 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0425 07:48:35.974123 135055182722880 async_checkpointer.py:192] [process=3][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7ac02c1796c0> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0425 07:48:36.700395 135055182722880 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_11_optimizer_offload_true/checkpoints
I0425 07:48:36.728412 135055182722880 checkpoint_manager.py:929] [process=3][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_main_20260425_071456/linen_xpk_main_20260425_071456_11_optimizer_offload_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7ad337e9b500>
I0425 07:48:36.728557 135055182722880 checkpointing.py:301] Checkpoint manager created!
I0425 07:48:37.656686 135055182722880 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0425 07:48:37.656805 135055182722880 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 07:48:38.040655 135055182722880 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn').
I0425 07:48:38.040758 135055182722880 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 07:48:38.057365 135055182722880 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn').
I0425 07:48:38.057426 135055182722880 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 07:48:38.081580 135055182722880 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 07:48:38.081649 135055182722880 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 07:48:38.098383 135055182722880 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 07:48:38.098445 135055182722880 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 07:48:38.115135 135055182722880 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 07:48:38.115196 135055182722880 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 07:48:38.140620 135055182722880 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch_attn', 'activation_length_attn', 'activation_heads', 'activation_kv').
I0425 07:48:38.140693 135055182722880 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 07:48:38.162219 135055182722880 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0425 07:48:38.162286 135055182722880 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0425 07:48:38.373476 135055182722880 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0425 07:48:38.373585 135055182722880 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0425 07:48:40.022441 135055182722880 maxtext_utils.py:1707]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0425 07:48:40.022567 135055182722880 maxtext_utils.py:1707]  params/params/decoder/layers/mlp/wi_0/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0425 07:48:40.022622 135055182722880 maxtext_utils.py:1707]  params/params/decoder/layers/mlp/wi_1/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0425 07:48:40.022679 135055182722880 maxtext_utils.py:1707]  params/params/decoder/layers/mlp/wo/kernel
    Shape:     float32[7168,16,2048]
    Logical:   P('mlp', 'layers', 'embed')
    Physical:  (None, None, 'fsdp')
I0425 07:48:40.022737 135055182722880 maxtext_utils.py:1707]  params/params/decoder/layers/post_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  (None, None)
I0425 07:48:40.022785 135055182722880 maxtext_utils.py:1707]  params/params/decoder/layers/pre_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  (None, None)
I0425 07:48:40.022841 135055182722880 maxtext_utils.py:1707]  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)
I0425 07:48:40.022894 135055182722880 maxtext_utils.py:1707]  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')
I0425 07:48:40.022952 135055182722880 maxtext_utils.py:1707]  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)
I0425 07:48:40.022993 135055182722880 maxtext_utils.py:1707]  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)
I0425 07:48:40.023042 135055182722880 maxtext_utils.py:1707]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)
I0425 07:48:40.023088 135055182722880 maxtext_utils.py:1707]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')

    Physical:  (None, 'fsdp')
I0425 07:48:40.523305 135055182722880 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 07:48:40.523399 135055182722880 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 07:48:40.539076 135055182722880 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 07:48:40.539135 135055182722880 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 07:48:51.552149 135055182722880 max_utils.py:791] Total memory size: 1.3 GB, Output size: 0.1 GB, Temp size: 1.1 GB, Argument size: 0.1 GB, Host temp size: 0.0 GB.
I0425 07:48:51.552956 135055182722880 metric_logger.py:301] number parameters: 1.104 billion
I0425 07:49:03.241879 135055182722880 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0425 07:49:03.414797 135055182722880 checkpointing.py:776] Waited 0.1728966236114502 seconds for step 0 to finish before starting checkpointing.
I0425 07:49:03.418044 135055182722880 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 07:49:03.419436 135055182722880 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 0
I0425 07:49:03.420823 135055182722880 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_11_optimizer_offload_true/checkpoints/0.
I0425 07:49:03.819177 135055182722880 signaling_client.py:364] Using JaxDistributedSignalingClient
I0425 07:49:03.820079 135055182722880 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0425 07:49:03.820136 135055182722880 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
I0425 07:49:04.095267 135055182722880 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.276186s
I0425 07:49:04.095439 135055182722880 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 5.457 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28265810012817383 s) (per-host)
I0425 07:49:04.095497 135055182722880 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.282726s (batch_requests_ready=0.002242s, total_serialization_initiated=0.280408s, others=0.000077s)
I0425 07:49:04.095591 135055182722880 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.286956s (all_items=0.000018s, per_item={'items': '0.00001836'}, temp_paths=0.286937)
I0425 07:49:04.096420 135055182722880 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.68 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_11_optimizer_offload_true/checkpoints/0.
I0425 07:49:04.096758 134921414760192 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 08:09:04.096719
I0425 07:49:04.527576 135055182722880 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 07:49:04.528002 134920587503360 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0425 07:49:04.528174 135055182722880 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_11_optimizer_offload_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777103343.4180253, 'wait_for_prev_duration_secs': 6.031990051269531e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777103343.4194734, 'checkpointer_blocking_duration_secs': 0.6774771213531494, 'get_old_steps_start_time': 1777103344.096976, 'get_old_steps_duration_secs': 3.0279159545898438e-05, 'checkpoint_manager_blocking_start_time': 1777103343.4153292, 'checkpoint_manager_blocking_duration_secs': 1.1128005981445312}
I0425 07:49:04.528283 135055182722880 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0425 07:49:04.528335 135055182722880 max_utils.py:750] 
Memstats: After params initialized:
I0425 07:49:04.528392 135055182722880 max_utils.py:756] 	Using (GB) 0.17 / 31.25 (0.544000%) on TPU_10(process=3,(2,2,0,0))
I0425 07:49:04.528424 135055182722880 max_utils.py:756] 	Using (GB) 0.17 / 31.25 (0.544000%) on TPU_11(process=3,(3,2,0,0))
I0425 07:49:04.528451 135055182722880 max_utils.py:756] 	Using (GB) 0.17 / 31.25 (0.544000%) on TPU_14(process=3,(2,3,0,0))
I0425 07:49:04.528477 135055182722880 max_utils.py:756] 	Using (GB) 0.17 / 31.25 (0.544000%) on TPU_15(process=3,(3,3,0,0))
I0425 07:49:04.840706 135055182722880 metric_logger.py:196] completed step: 0, seconds: 11.689, TFLOP/s/device: 1.162, Tokens/s/device: 175.210, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0425 07:49:05.045844 135055182722880 metric_logger.py:196] completed step: 1, seconds: 1.597, TFLOP/s/device: 8.507, Tokens/s/device: 1282.210, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0425 07:49:05.497989 135055182722880 metric_logger.py:196] completed step: 2, seconds: 0.042, TFLOP/s/device: 320.028, Tokens/s/device: 48238.176, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129
I0425 07:49:05.660961 135055182722880 metric_logger.py:196] completed step: 3, seconds: 0.452, TFLOP/s/device: 30.041, Tokens/s/device: 4528.078, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.047
I0425 07:49:05.987161 135055182722880 metric_logger.py:196] completed step: 4, seconds: 0.169, TFLOP/s/device: 80.546, Tokens/s/device: 12140.757, total_weights: 65536, loss: 9.278, lm_loss: 9.278, perplexity: 10694.968
I0425 07:49:05.993560 135055182722880 metric_logger.py:196] completed step: 5, seconds: 0.163, TFLOP/s/device: 83.441, Tokens/s/device: 12577.149, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.520
I0425 07:49:06.960455    2775 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0425 07:49:08.999901 134920844318464 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_11_optimizer_offload_true/checkpoints/0/items/array_metadatas/process_3
I0425 07:49:27.782441 135055182722880 metric_logger.py:196] completed step: 6, seconds: 0.327, TFLOP/s/device: 41.542, Tokens/s/device: 6261.733, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.688
I0425 07:49:27.945260 135055182722880 metric_logger.py:196] completed step: 7, seconds: 21.627, TFLOP/s/device: 0.628, Tokens/s/device: 94.697, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4377.010
I0425 07:49:28.108094 135055182722880 metric_logger.py:196] completed step: 8, seconds: 0.168, TFLOP/s/device: 81.103, Tokens/s/device: 12224.749, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3845.943
I0425 07:49:28.270358 135055182722880 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0425 07:49:28.271050 135055182722880 checkpointing.py:776] Waited 0.0007128715515136719 seconds for step 9 to finish before starting checkpointing.
I0425 07:49:28.272970 135055182722880 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 07:49:41.121685 134921414760192 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 42.337 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.308868408203125 s) (per-host)
I0425 07:49:41.121811 134921414760192 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.024922s.
I0425 07:49:50.342289 134921414760192 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 46.245384s.
I0425 07:49:50.342592 134920587503360 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 07:49:50.342706 134920587503360 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0425 07:49:50.342757 134920587503360 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0425 07:49:50.344465 134920587503360 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0425 07:49:50.344657 135055182722880 checkpoint_manager.py:2032] [process=3][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0425 07:49:50.344794 135055182722880 checkpoint_manager.py:1452] Waiting for previous save to complete took 22.071823 seconds. If this number is high, consider checkpointing less frequently.
I0425 07:49:50.346646 135055182722880 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 9
I0425 07:49:50.348725 135055182722880 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_11_optimizer_offload_true/checkpoints/9.
I0425 07:49:50.627634 135055182722880 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0425 07:49:50.627735 135055182722880 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
I0425 07:49:50.662780 135055182722880 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.036134s
I0425 07:49:50.662910 135055182722880 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 39.051 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.039499759674072266 s) (per-host)
I0425 07:49:50.662970 135055182722880 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.039567s (batch_requests_ready=0.001821s, total_serialization_initiated=0.037672s, others=0.000074s)
I0425 07:49:50.663046 135055182722880 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.043985s (all_items=0.000015s, per_item={'items': '0.00001502'}, temp_paths=0.043970)
I0425 07:49:50.663795 135055182722880 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.32 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_11_optimizer_offload_true/checkpoints/9.
I0425 07:49:50.664068 134920587503360 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 08:09:50.664048
I0425 07:49:50.666120 135055182722880 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 07:49:50.666394 134921406367488 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0425 07:49:50.666540 135055182722880 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_11_optimizer_offload_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777103368.2729406, 'wait_for_prev_duration_secs': 22.071823358535767, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777103390.3466842, 'checkpointer_blocking_duration_secs': 0.3174717426300049, 'get_old_steps_start_time': 1777103390.664179, 'get_old_steps_duration_secs': 3.123283386230469e-05, 'checkpoint_manager_blocking_start_time': 1777103368.271278, 'checkpoint_manager_blocking_duration_secs': 22.395226001739502}
I0425 07:49:50.666706 135055182722880 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0425 07:49:50.666759 135055182722880 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 07:49:55.877787 134920844318464 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_11_optimizer_offload_true/checkpoints/9/items/array_metadatas/process_3
I0425 07:50:32.556883 134920587503360 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 37.668 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.93343377113342 s) (per-host)
I0425 07:50:32.557018 134920587503360 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.892883s.
I0425 07:50:40.587466 134920587503360 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 49.923315s.
I0425 07:50:40.587763 134921406367488 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 07:50:40.587882 134921406367488 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0425 07:50:40.587942 134921406367488 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0425 07:50:40.589404 134921406367488 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0425 07:50:40.589581 135055182722880 checkpoint_manager.py:2032] [process=3][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0425 07:50:40.589740 135055182722880 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 07:50:40.590646 135055182722880 metric_logger.py:196] completed step: 9, seconds: 0.163, TFLOP/s/device: 83.230, Tokens/s/device: 12545.407, total_weights: 65536, loss: 8.179, lm_loss: 8.179, perplexity: 3564.739
Per train step:
 Total TFLOPs: 13.59 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Sat Apr 25 07:50:51 UTC 2026
EXIT_CODE=0
test/pipeline-scan-nnx  ·  5b21b66fc  ·  test_pipeline_scan_nnx_20260425_201227  ·  full log 
XPK Start: Sat Apr 25 20:45:19 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. 
2026-04-25 20:45:44.368044: 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)
I0425 20:45:44.581605 137875146880832 max_utils.py:273] Attempting to initialize the jax distributed system...
I0425 20:45:53.622494 137875146880832 distributed.py:149] Starting JAX distributed service on [::]:8482
I0425 20:45:53.624780 137875146880832 distributed.py:172] Connecting to JAX distributed service on mt-11-optimizer-offload-83ojn-slice-job-0-0.mt-11-optimizer-offload-83ojn:8482
I0425 20:45:54.520697 137875146880832 max_utils.py:284] Jax distributed system initialized!
I0425 20:45:59.699457 137875146880832 max_utils.py:800] System Information: Jax Version: 0.9.2
I0425 20:45:59.699559 137875146880832 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0425 20:45:59.699599 137875146880832 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
I0425 20:45:59.699636 137875146880832 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0425 20:46:00.398592 137875146880832 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0425 20:46:00.398892 137875146880832 checkpointing.py:677] Setting up checkpoint logger...
I0425 20:46:00.398946 137875146880832 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0425 20:46:00.398990 137875146880832 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0425 20:46:00.399334 137875146880832 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 0x7d64f9591790>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0425 20:46:03.223315 137875146880832 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0425 20:46:03.223548 137875146880832 checkpoint_manager.py:708] [process=5][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7d5150733500>}, handler_registry=None
I0425 20:46:03.223795 137875146880832 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7d5150733500>` 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`.
I0425 20:46:03.223844 137875146880832 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d5150735490>` 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`.
I0425 20:46:03.223880 137875146880832 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 0x7d5150733500>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7d5150733500>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d5150735490>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d5150735490>}).
I0425 20:46:03.224209 137875146880832 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0425 20:46:03.224277 137875146880832 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7d51505872e0> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0425 20:46:04.762467 137875146880832 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_11_optimizer_offload_true/checkpoints
I0425 20:46:04.770738 137875146880832 checkpoint_manager.py:929] [process=5][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_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_11_optimizer_offload_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7d5150737050>
I0425 20:46:04.770853 137875146880832 checkpointing.py:301] Checkpoint manager created!
I0425 20:46:05.696051 137875146880832 nnx_wrappers.py:453] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0425 20:46:05.696174 137875146880832 nnx_wrappers.py:453] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 20:46:06.082695 137875146880832 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0425 20:46:06.082792 137875146880832 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 20:46:06.099596 137875146880832 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0425 20:46:06.099670 137875146880832 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 20:46:06.123718 137875146880832 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 20:46:06.123785 137875146880832 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:46:06.140484 137875146880832 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 20:46:06.140552 137875146880832 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:46:06.157306 137875146880832 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0425 20:46:06.157368 137875146880832 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:46:06.182466 137875146880832 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0425 20:46:06.182535 137875146880832 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:46:06.203877 137875146880832 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0425 20:46:06.203945 137875146880832 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0425 20:46:06.416503 137875146880832 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0425 20:46:06.416615 137875146880832 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0425 20:46:08.068958 137875146880832 maxtext_utils.py:1668]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0425 20:46:08.069102 137875146880832 maxtext_utils.py:1668]  params/params/decoder/layers/mlp/wi_0/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0425 20:46:08.069157 137875146880832 maxtext_utils.py:1668]  params/params/decoder/layers/mlp/wi_1/kernel
    Shape:     float32[2048,16,7168]
    Logical:   P('embed', 'layers', 'mlp')
    Physical:  ('fsdp', None, None)
I0425 20:46:08.069216 137875146880832 maxtext_utils.py:1668]  params/params/decoder/layers/mlp/wo/kernel
    Shape:     float32[7168,16,2048]
    Logical:   P('mlp', 'layers', 'embed')
    Physical:  (None, None, 'fsdp')
I0425 20:46:08.069269 137875146880832 maxtext_utils.py:1668]  params/params/decoder/layers/post_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  (None, None)
I0425 20:46:08.069308 137875146880832 maxtext_utils.py:1668]  params/params/decoder/layers/pre_self_attention_layer_norm/scale
    Shape:     float32[2048,16]
    Logical:   P('norm', 'layers')
    Physical:  (None, None)
I0425 20:46:08.069361 137875146880832 maxtext_utils.py:1668]  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)
I0425 20:46:08.069415 137875146880832 maxtext_utils.py:1668]  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')
I0425 20:46:08.069456 137875146880832 maxtext_utils.py:1668]  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)
I0425 20:46:08.069493 137875146880832 maxtext_utils.py:1668]  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)
I0425 20:46:08.069541 137875146880832 maxtext_utils.py:1668]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)
I0425 20:46:08.069586 137875146880832 maxtext_utils.py:1668]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]

    Logical:   P('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')
I0425 20:46:08.566523 137875146880832 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 20:46:08.566612 137875146880832 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 20:46:08.582269 137875146880832 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 20:46:08.582329 137875146880832 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 20:46:19.528016 137875146880832 max_utils.py:791] Total memory size: 1.3 GB, Output size: 0.1 GB, Temp size: 1.1 GB, Argument size: 0.1 GB, Host temp size: 0.0 GB.
I0425 20:46:19.528892 137875146880832 metric_logger.py:301] number parameters: 1.104 billion
I0425 20:46:30.856520 137875146880832 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0425 20:46:31.025599 137875146880832 checkpointing.py:776] Waited 0.16905856132507324 seconds for step 0 to finish before starting checkpointing.
I0425 20:46:31.028166 137875146880832 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 20:46:31.029997 137875146880832 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0
I0425 20:46:31.031420 137875146880832 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_11_optimizer_offload_true/checkpoints/0.
I0425 20:46:31.354889 137875146880832 signaling_client.py:364] Using JaxDistributedSignalingClient
I0425 20:46:31.355967 137875146880832 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0425 20:46:31.356024 137875146880832 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
I0425 20:46:31.628257 137875146880832 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.273447s
I0425 20:46:31.628430 137875146880832 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.510 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.27994847297668457 s) (per-host)
I0425 20:46:31.628484 137875146880832 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.280014s (batch_requests_ready=0.002442s, total_serialization_initiated=0.277498s, others=0.000073s)
I0425 20:46:31.628577 137875146880832 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.284204s (all_items=0.000018s, per_item={'items': '0.00001812'}, temp_paths=0.284186)
I0425 20:46:31.629357 137875146880832 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.60 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_11_optimizer_offload_true/checkpoints/0.
I0425 20:46:31.629714 137743119214336 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 21:06:31.629677
I0425 20:46:31.636314 137875146880832 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 20:46:31.636623 137742755297024 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0425 20:46:31.636795 137875146880832 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_11_optimizer_offload_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777149991.0281477, 'wait_for_prev_duration_secs': 6.031990051269531e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777149991.0300345, 'checkpointer_blocking_duration_secs': 0.5998330116271973, 'get_old_steps_start_time': 1777149991.629891, 'get_old_steps_duration_secs': 2.8371810913085938e-05, 'checkpoint_manager_blocking_start_time': 1777149991.0261443, 'checkpoint_manager_blocking_duration_secs': 0.6106107234954834}
I0425 20:46:31.636898 137875146880832 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0425 20:46:31.636949 137875146880832 max_utils.py:750] 
Memstats: After params initialized:
I0425 20:46:31.636997 137875146880832 max_utils.py:756] 	Using (GB) 0.17 / 31.25 (0.544000%) on TPU_18(process=5,(2,4,0,0))
I0425 20:46:31.637032 137875146880832 max_utils.py:756] 	Using (GB) 0.17 / 31.25 (0.544000%) on TPU_19(process=5,(3,4,0,0))
I0425 20:46:31.637061 137875146880832 max_utils.py:756] 	Using (GB) 0.17 / 31.25 (0.544000%) on TPU_22(process=5,(2,5,0,0))
I0425 20:46:31.637086 137875146880832 max_utils.py:756] 	Using (GB) 0.17 / 31.25 (0.544000%) on TPU_23(process=5,(3,5,0,0))
I0425 20:46:31.947174 137875146880832 metric_logger.py:196] completed step: 0, seconds: 11.328, TFLOP/s/device: 1.199, Tokens/s/device: 180.799, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0425 20:46:32.136153 137875146880832 metric_logger.py:196] completed step: 1, seconds: 1.089, TFLOP/s/device: 12.474, Tokens/s/device: 1880.284, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875
I0425 20:46:32.566361 137875146880832 metric_logger.py:196] completed step: 2, seconds: 0.026, TFLOP/s/device: 523.448, Tokens/s/device: 78899.719, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129
I0425 20:46:32.728907 137875146880832 metric_logger.py:196] completed step: 3, seconds: 0.430, TFLOP/s/device: 31.587, Tokens/s/device: 4761.163, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.047
I0425 20:46:33.054750 137875146880832 metric_logger.py:196] completed step: 4, seconds: 0.169, TFLOP/s/device: 80.484, Tokens/s/device: 12131.408, total_weights: 65536, loss: 9.278, lm_loss: 9.278, perplexity: 10694.968
I0425 20:46:33.060371 137875146880832 metric_logger.py:196] completed step: 5, seconds: 0.162, TFLOP/s/device: 83.726, Tokens/s/device: 12620.085, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.520
I0425 20:46:34.505304    2720 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0425 20:46:36.968249 137743102428928 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_11_optimizer_offload_true/checkpoints/0/items/array_metadatas/process_5
I0425 20:46:54.554234 137875146880832 metric_logger.py:196] completed step: 6, seconds: 0.326, TFLOP/s/device: 41.617, Tokens/s/device: 6273.011, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.688
I0425 20:46:54.717076 137875146880832 metric_logger.py:196] completed step: 7, seconds: 21.331, TFLOP/s/device: 0.637, Tokens/s/device: 96.008, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4377.010
I0425 20:46:54.879887 137875146880832 metric_logger.py:196] completed step: 8, seconds: 0.168, TFLOP/s/device: 80.988, Tokens/s/device: 12207.334, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3845.943
I0425 20:46:55.042192 137875146880832 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0425 20:46:55.042895 137875146880832 checkpointing.py:776] Waited 0.0007226467132568359 seconds for step 9 to finish before starting checkpointing.
I0425 20:46:55.045315 137875146880832 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 20:47:09.150699 137743119214336 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 41.784 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.802170515060425 s) (per-host)
I0425 20:47:09.150827 137743119214336 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.520999s.
I0425 20:47:15.903844 137743119214336 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 44.273999s.
I0425 20:47:15.904126 137742755297024 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 20:47:15.904252 137742755297024 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0425 20:47:15.904315 137742755297024 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0425 20:47:15.905610 137742755297024 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0425 20:47:15.905791 137875146880832 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0425 20:47:15.905921 137875146880832 checkpoint_manager.py:1452] Waiting for previous save to complete took 20.860604 seconds. If this number is high, consider checkpointing less frequently.
I0425 20:47:15.907747 137875146880832 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9
I0425 20:47:15.909829 137875146880832 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_11_optimizer_offload_true/checkpoints/9.
I0425 20:47:16.197240 137875146880832 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0425 20:47:16.197330 137875146880832 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
I0425 20:47:16.230192 137875146880832 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.033860s
I0425 20:47:16.230359 137875146880832 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 41.172 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.03746533393859863 s) (per-host)
I0425 20:47:16.230408 137875146880832 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.037524s (batch_requests_ready=0.002015s, total_serialization_initiated=0.035443s, others=0.000066s)
I0425 20:47:16.230495 137875146880832 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.041796s (all_items=0.000016s, per_item={'items': '0.00001645'}, temp_paths=0.041780)
I0425 20:47:16.231202 137875146880832 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.32 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_11_optimizer_offload_true/checkpoints/9.
I0425 20:47:16.231547 137742755297024 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 21:07:16.231510
I0425 20:47:16.234134 137875146880832 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 20:47:16.234420 137720575801088 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0425 20:47:16.234582 137875146880832 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_11_optimizer_offload_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777150015.0452862, 'wait_for_prev_duration_secs': 20.86060380935669, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777150035.9077845, 'checkpointer_blocking_duration_secs': 0.32392191886901855, 'get_old_steps_start_time': 1777150036.2317283, 'get_old_steps_duration_secs': 2.9087066650390625e-05, 'checkpoint_manager_blocking_start_time': 1777150015.0431237, 'checkpoint_manager_blocking_duration_secs': 21.19142198562622}
I0425 20:47:16.234699 137875146880832 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0425 20:47:16.234748 137875146880832 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 20:47:21.297445 137743102428928 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_11_optimizer_offload_true/checkpoints/9/items/array_metadatas/process_5
I0425 20:47:58.152374 137742755297024 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.644 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.95944094657898 s) (per-host)
I0425 20:47:58.152498 137742755297024 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.920827s.
I0425 20:48:06.279057 137742755297024 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 50.047371s.
I0425 20:48:06.279389 137720575801088 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 20:48:06.279506 137720575801088 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0425 20:48:06.279556 137720575801088 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0425 20:48:06.280666 137720575801088 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0425 20:48:06.280869 137875146880832 checkpoint_manager.py:2032] [process=5][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0425 20:48:06.281012 137875146880832 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 20:48:06.281875 137875146880832 metric_logger.py:196] completed step: 9, seconds: 0.163, TFLOP/s/device: 83.558, Tokens/s/device: 12594.784, total_weights: 65536, loss: 8.179, lm_loss: 8.179, perplexity: 3564.739
Per train step:
 Total TFLOPs: 13.59 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Sat Apr 25 20:48:19 UTC 2026
EXIT_CODE=0