MaxView

Timing Test Reference Updates
‹ 03_dropoutCase: 04_int805_fp8 ›

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 loss8.17508.17500
TFLOP/s59.24959.222-0.027
Tok/s8930.78926.6-4.048
Avg s/step3.6133.610-0.003
Memory %1.381.380
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 07:21:16 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 07:21:41.869574: 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 07:21:42.079255 135965884618560 max_utils.py:273] Attempting to initialize the jax distributed system...
I0425 07:21:51.119862 135965884618560 distributed.py:149] Starting JAX distributed service on [::]:8482
I0425 07:21:51.122118 135965884618560 distributed.py:172] Connecting to JAX distributed service on mt-04-int8-tfv0h-slice-job-0-0.mt-04-int8-tfv0h:8482
I0425 07:21:51.944138 135965884618560 max_utils.py:284] Jax distributed system initialized!
I0425 07:21:57.985152 135965884618560 max_utils.py:800] System Information: Jax Version: 0.9.2
I0425 07:21:57.985256 135965884618560 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0425 07:21:57.985296 135965884618560 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 07:21:57.985332 135965884618560 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0425 07:21:58.676079 135965884618560 maxtext_utils.py:1604] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0425 07:21:58.676470 135965884618560 checkpointing.py:677] Setting up checkpoint logger...
I0425 07:21:58.676526 135965884618560 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0425 07:21:58.676569 135965884618560 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0425 07:21:58.676913 135965884618560 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 0x7ba871f1ede0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0425 07:22:01.486215 135965884618560 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0425 07:22:01.486443 135965884618560 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 0x7ba74308a300>}, handler_registry=None
I0425 07:22:01.486701 135965884618560 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ba74308a300>` 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 07:22:01.486752 135965884618560 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b946413c560>` 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 07:22:01.486789 135965884618560 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 0x7ba74308a300>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ba74308a300>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b946413c560>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b946413c560>}).
I0425 07:22:01.487118 135965884618560 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0425 07:22:01.487190 135965884618560 async_checkpointer.py:192] [process=5][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7b94445d1760> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0425 07:22:02.648800 135965884618560 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints
I0425 07:22:02.688567 135965884618560 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_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7b9464135a60>
I0425 07:22:02.688736 135965884618560 checkpointing.py:301] Checkpoint manager created!
I0425 07:22:03.830742 135965884618560 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0425 07:22:03.830857 135965884618560 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 07:22:04.218037 135965884618560 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0425 07:22:04.218132 135965884618560 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 07:22:04.234637 135965884618560 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0425 07:22:04.234702 135965884618560 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 07:22:04.300613 135965884618560 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 07:22:04.300716 135965884618560 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 07:22:04.317263 135965884618560 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 07:22:04.317322 135965884618560 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 07:22:04.333912 135965884618560 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 07:22:04.333976 135965884618560 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 07:22:04.358685 135965884618560 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0425 07:22:04.358756 135965884618560 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 07:22:04.424959 135965884618560 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0425 07:22:04.425045 135965884618560 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0425 07:22:04.932487 135965884618560 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0425 07:22:04.932595 135965884618560 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0425 07:22:07.426491 135965884618560 maxtext_utils.py:1707]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0425 07:22:07.426615 135965884618560 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 07:22:07.426681 135965884618560 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 07:22:07.426740 135965884618560 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 07:22:07.426794 135965884618560 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 07:22:07.426833 135965884618560 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 07:22:07.426887 135965884618560 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 07:22:07.426943 135965884618560 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 07:22:07.426985 135965884618560 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 07:22:07.427020 135965884618560 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 07:22:07.427066 135965884618560 maxtext_utils.py:1707]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)
I0425 07:22:07.427113 135965884618560 maxtext_utils.py:1707]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')

I0425 07:22:08.817587 135965884618560 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 07:22:08.817697 135965884618560 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 07:22:08.834160 135965884618560 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 07:22:08.834223 135965884618560 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 07:22:22.341513 135965884618560 max_utils.py:791] Total memory size: 1.8 GB, Output size: 0.4 GB, Temp size: 1.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0425 07:22:22.342331 135965884618560 metric_logger.py:301] number parameters: 1.104 billion
I0425 07:22:37.212856 135965884618560 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0425 07:22:37.453130 135965884618560 checkpointing.py:776] Waited 0.2402477264404297 seconds for step 0 to finish before starting checkpointing.
I0425 07:22:37.455894 135965884618560 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 07:22:37.459030 135965884618560 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 0
I0425 07:22:37.460455 135965884618560 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints/0.
I0425 07:22:37.786480 135965884618560 signaling_client.py:364] Using JaxDistributedSignalingClient
I0425 07:22:37.787490 135965884618560 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0425 07:22:37.787547 135965884618560 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 07:22:38.066318 135965884618560 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.279913s
I0425 07:22:38.066492 135965884618560 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 5.406 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28536128997802734 s) (per-host)
I0425 07:22:38.066548 135965884618560 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.285427s (batch_requests_ready=0.002229s, total_serialization_initiated=0.283124s, others=0.000073s)
I0425 07:22:38.066646 135965884618560 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.289515s (all_items=0.000019s, per_item={'items': '0.00001860'}, temp_paths=0.289496)
I0425 07:22:38.067538 135965884618560 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.61 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints/0.
I0425 07:22:38.067868 135833875052288 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 07:42:38.067830
I0425 07:22:38.078439 135965884618560 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 07:22:38.078732 135831321896704 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0425 07:22:38.078892 135965884618560 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777101757.455877, 'wait_for_prev_duration_secs': 6.031990051269531e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777101757.4590714, 'checkpointer_blocking_duration_secs': 0.6089563369750977, 'get_old_steps_start_time': 1777101758.0680528, 'get_old_steps_duration_secs': 3.2901763916015625e-05, 'checkpoint_manager_blocking_start_time': 1777101757.453697, 'checkpoint_manager_blocking_duration_secs': 0.6251547336578369}
I0425 07:22:38.079006 135965884618560 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0425 07:22:38.079055 135965884618560 max_utils.py:750] 
Memstats: After params initialized:
I0425 07:22:38.079104 135965884618560 max_utils.py:756] 	Using (GB) 0.44 / 31.25 (1.408000%) on TPU_18(process=5,(2,4,0,0))
I0425 07:22:38.079138 135965884618560 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_19(process=5,(3,4,0,0))
I0425 07:22:38.079165 135965884618560 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_22(process=5,(2,5,0,0))
I0425 07:22:38.079191 135965884618560 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_23(process=5,(3,5,0,0))
I0425 07:22:38.393681 135965884618560 metric_logger.py:196] completed step: 0, seconds: 14.870, TFLOP/s/device: 0.914, Tokens/s/device: 137.723, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52796.277
I0425 07:22:38.664057 135965884618560 metric_logger.py:196] completed step: 1, seconds: 1.179, TFLOP/s/device: 11.522, Tokens/s/device: 1736.650, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52796.277
I0425 07:22:39.081716 135965884618560 metric_logger.py:196] completed step: 2, seconds: 0.042, TFLOP/s/device: 326.786, Tokens/s/device: 49256.819, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28634.820
I0425 07:22:39.311253 135965884618560 metric_logger.py:196] completed step: 3, seconds: 0.418, TFLOP/s/device: 32.511, Tokens/s/device: 4900.459, total_weights: 65536, loss: 9.731, lm_loss: 9.731, perplexity: 16827.199
I0425 07:22:39.775644 135965884618560 metric_logger.py:196] completed step: 4, seconds: 0.235, TFLOP/s/device: 57.867, Tokens/s/device: 8722.317, total_weights: 65536, loss: 9.272, lm_loss: 9.272, perplexity: 10638.531
I0425 07:22:39.781880 135965884618560 metric_logger.py:196] completed step: 5, seconds: 0.230, TFLOP/s/device: 59.183, Tokens/s/device: 8920.677, total_weights: 65536, loss: 8.887, lm_loss: 8.887, perplexity: 7233.941
I0425 07:22:41.303051    2925 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0425 07:22:43.365815 135832799807232 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints/0/items/array_metadatas/process_5
I0425 07:23:09.498006 135965884618560 metric_logger.py:196] completed step: 6, seconds: 0.465, TFLOP/s/device: 29.228, Tokens/s/device: 4405.628, total_weights: 65536, loss: 8.588, lm_loss: 8.588, perplexity: 5365.468
I0425 07:23:09.727385 135965884618560 metric_logger.py:196] completed step: 7, seconds: 29.488, TFLOP/s/device: 0.461, Tokens/s/device: 69.452, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4358.779
I0425 07:23:09.956782 135965884618560 metric_logger.py:196] completed step: 8, seconds: 0.234, TFLOP/s/device: 58.054, Tokens/s/device: 8750.566, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.453
I0425 07:23:10.185567 135965884618560 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0425 07:23:10.186244 135965884618560 checkpointing.py:776] Waited 0.0006976127624511719 seconds for step 9 to finish before starting checkpointing.
I0425 07:23:10.188390 135965884618560 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 07:23:11.670372 135833875052288 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 46.611 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 33.88920211791992 s) (per-host)
I0425 07:23:11.670495 135833875052288 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 33.602513s.
I0425 07:23:19.863918 135833875052288 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 41.795918s.
I0425 07:23:19.864192 135831321896704 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 07:23:19.864320 135831321896704 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0425 07:23:19.864371 135831321896704 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0425 07:23:19.866041 135831321896704 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0425 07:23:19.866220 135965884618560 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 07:23:19.866360 135965884618560 checkpoint_manager.py:1452] Waiting for previous save to complete took 9.677972 seconds. If this number is high, consider checkpointing less frequently.
I0425 07:23:19.868197 135965884618560 checkpoint_manager.py:1512] [process=5] Saving checkpoint at step 9
I0425 07:23:19.870316 135965884618560 event_tracking.py:70] [process=5] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints/9.
I0425 07:23:20.180980 135965884618560 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0425 07:23:20.181073 135965884618560 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 07:23:20.224014 135965884618560 base_pytree_checkpoint_handler.py:154] [process=5][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.044906s
I0425 07:23:20.224178 135965884618560 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/blocking_gbytes_per_sec: 31.903 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.048351287841796875 s) (per-host)
I0425 07:23:20.224235 135965884618560 base_pytree_checkpoint_handler.py:768] [process=5][thread=MainThread] Initiated Pytree async_save. Time taken: 0.048417s (batch_requests_ready=0.001795s, total_serialization_initiated=0.046549s, others=0.000073s)
I0425 07:23:20.224331 135965884618560 composite_checkpoint_handler.py:715] [process=5][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.053346s (all_items=0.000016s, per_item={'items': '0.00001597'}, temp_paths=0.053330)
I0425 07:23:20.225048 135965884618560 event_tracking.py:125] [process=5] [async] Finished blocking save in 0.36 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints/9.
I0425 07:23:20.225403 135831321896704 async_checkpointer.py:76] [process=5][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 07:43:20.225366
I0425 07:23:20.227372 135965884618560 checkpoint_manager.py:1560] [process=5][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 07:23:20.227627 135833340327680 async_checkpointer.py:280] [process=5][thread=save_finalize] Waiting for background save thread=async_save.
I0425 07:23:20.227800 135965884618560 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777101790.188358, 'wait_for_prev_duration_secs': 9.677971601486206, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777101799.8682365, 'checkpointer_blocking_duration_secs': 0.35731029510498047, 'get_old_steps_start_time': 1777101800.2255714, 'get_old_steps_duration_secs': 2.9802322387695312e-05, 'checkpoint_manager_blocking_start_time': 1777101790.186482, 'checkpoint_manager_blocking_duration_secs': 10.041281700134277}
I0425 07:23:20.227904 135965884618560 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0425 07:23:20.227949 135965884618560 checkpoint_manager.py:2020] [process=5][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 07:23:25.333943 135833859925760 array_metadata_store.py:203] [process=5][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_04_int8/checkpoints/9/items/array_metadatas/process_5
I0425 07:24:02.656580 135831321896704 base_pytree_checkpoint_handler.py:130] [process=5] /jax/orbax/write/gbytes_per_sec: 37.184 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.48072957992554 s) (per-host)
I0425 07:24:02.656706 135831321896704 async_checkpointer.py:90] [process=5][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.431186s.
I0425 07:24:10.118889 135831321896704 async_checkpointer.py:160] [process=5][thread=async_save] Background save thread done. Time taken: 49.893354s.
I0425 07:24:10.119287 135833340327680 async_checkpointer.py:288] [process=5][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 07:24:10.119402 135833340327680 async_checkpointer.py:298] [process=5][thread=save_finalize] No errors found in background save thread=async_save.
I0425 07:24:10.119449 135833340327680 checkpoint_manager.py:2137] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0425 07:24:10.120985 135833340327680 checkpoint_manager.py:2146] [process=5][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0425 07:24:10.121161 135965884618560 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 07:24:10.121315 135965884618560 checkpoint_manager.py:2009] [process=5][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 07:24:10.122251 135965884618560 metric_logger.py:196] completed step: 9, seconds: 0.229, TFLOP/s/device: 59.249, Tokens/s/device: 8930.674, total_weights: 65536, loss: 8.175, lm_loss: 8.175, perplexity: 3552.333
Per train step:
 Total TFLOPs: 13.59 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Sat Apr 25 07:24:26 UTC 2026
EXIT_CODE=0
test/pipeline-scan-nnx  ·  5b21b66fc  ·  test_pipeline_scan_nnx_20260425_201227  ·  full log 
XPK Start: Sat Apr 25 20:18:34 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 20:18:59.400339: 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 20:18:59.612493 135131790600000 max_utils.py:273] Attempting to initialize the jax distributed system...
I0425 20:19:08.653131 135131790600000 distributed.py:149] Starting JAX distributed service on [::]:8482
I0425 20:19:08.656969 135131790600000 distributed.py:172] Connecting to JAX distributed service on mt-04-int8-6q3kv-slice-job-0-0.mt-04-int8-6q3kv:8482
I0425 20:19:09.765152 135131790600000 max_utils.py:284] Jax distributed system initialized!
I0425 20:19:15.876063 135131790600000 max_utils.py:800] System Information: Jax Version: 0.9.2
I0425 20:19:15.876168 135131790600000 max_utils.py:801] System Information: Jaxlib Version: 0.9.2
I0425 20:19:15.876208 135131790600000 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 20:19:15.876242 135131790600000 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0425 20:19:16.575864 135131790600000 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0425 20:19:16.576284 135131790600000 checkpointing.py:677] Setting up checkpoint logger...
I0425 20:19:16.576343 135131790600000 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0425 20:19:16.576388 135131790600000 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None
I0425 20:19:16.576737 135131790600000 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 0x7ae638f14080>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0425 20:19:19.425808 135131790600000 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0425 20:19:19.426056 135131790600000 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 0x7ad1d41d6330>}, handler_registry=None
I0425 20:19:19.426292 135131790600000 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ad1d41d6330>` 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 20:19:19.426341 135131790600000 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ad1d41db830>` 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 20:19:19.426377 135131790600000 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 0x7ad1d41d6330>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ad1d41d6330>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ad1d41db830>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ad1d41db830>}).
I0425 20:19:19.426709 135131790600000 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34
I0425 20:19:19.426779 135131790600000 async_checkpointer.py:192] [process=3][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7ad1c4763560> timeout: 1200 secs and primary_host=0 for async checkpoint writes
I0425 20:19:20.523509 135131790600000 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_04_int8/checkpoints
I0425 20:19:20.987082 135131790600000 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_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_04_int8/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7ad1d41d8d70>
I0425 20:19:20.987256 135131790600000 checkpointing.py:301] Checkpoint manager created!
I0425 20:19:22.125816 135131790600000 nnx_wrappers.py:453] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0425 20:19:22.125946 135131790600000 nnx_wrappers.py:453] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 20:19:22.530017 135131790600000 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0425 20:19:22.530113 135131790600000 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 20:19:22.552597 135131790600000 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0425 20:19:22.552692 135131790600000 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0425 20:19:22.622324 135131790600000 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 20:19:22.622420 135131790600000 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:19:22.639451 135131790600000 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 20:19:22.639514 135131790600000 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:19:22.656346 135131790600000 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 20:19:22.656409 135131790600000 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:19:22.682198 135131790600000 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0425 20:19:22.682270 135131790600000 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0425 20:19:22.751909 135131790600000 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0425 20:19:22.752012 135131790600000 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0425 20:19:23.265705 135131790600000 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0425 20:19:23.265824 135131790600000 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0425 20:19:25.760472 135131790600000 maxtext_utils.py:1668]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   P('norm',)
    Physical:  (None,)
I0425 20:19:25.760601 135131790600000 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 20:19:25.760656 135131790600000 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 20:19:25.760716 135131790600000 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 20:19:25.760771 135131790600000 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 20:19:25.760812 135131790600000 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 20:19:25.760865 135131790600000 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 20:19:25.760920 135131790600000 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 20:19:25.760981 135131790600000 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 20:19:25.761020 135131790600000 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 20:19:25.761071 135131790600000 maxtext_utils.py:1668]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   P('embed_vocab', 'vocab')
    Physical:  ('fsdp', None)

I0425 20:19:25.761117 135131790600000 maxtext_utils.py:1668]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   P('vocab', 'embed_vocab')
    Physical:  (None, 'fsdp')
I0425 20:19:27.151160 135131790600000 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 20:19:27.151258 135131790600000 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 20:19:27.166818 135131790600000 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0425 20:19:27.166879 135131790600000 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0425 20:19:41.211170 135131790600000 max_utils.py:791] Total memory size: 1.8 GB, Output size: 0.4 GB, Temp size: 1.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0425 20:19:41.212126 135131790600000 metric_logger.py:301] number parameters: 1.104 billion
I0425 20:19:56.000633 135131790600000 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0425 20:19:56.242802 135131790600000 checkpointing.py:776] Waited 0.24214959144592285 seconds for step 0 to finish before starting checkpointing.
I0425 20:19:56.245296 135131790600000 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 20:19:56.247081 135131790600000 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 0
I0425 20:19:56.248471 135131790600000 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_04_int8/checkpoints/0.
I0425 20:19:56.737400 135131790600000 signaling_client.py:364] Using JaxDistributedSignalingClient
I0425 20:19:56.738295 135131790600000 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0425 20:19:56.738353 135131790600000 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 20:19:57.018300 135131790600000 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.280974s
I0425 20:19:57.018474 135131790600000 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 5.378 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28684473037719727 s) (per-host)
I0425 20:19:57.018534 135131790600000 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.286914s (batch_requests_ready=0.002378s, total_serialization_initiated=0.284459s, others=0.000077s)
I0425 20:19:57.018634 135131790600000 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.290985s (all_items=0.000020s, per_item={'items': '0.00001979'}, temp_paths=0.290965)
I0425 20:19:57.019499 135131790600000 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.77 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_04_int8/checkpoints/0.
I0425 20:19:57.019836 134999805531904 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 20:39:57.019798
I0425 20:19:57.024232 135131790600000 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 20:19:57.024484 134998693259008 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0425 20:19:57.024610 135131790600000 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_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777148396.2452762, 'wait_for_prev_duration_secs': 6.365776062011719e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777148396.24712, 'checkpointer_blocking_duration_secs': 0.7728292942047119, 'get_old_steps_start_time': 1777148397.019976, 'get_old_steps_duration_secs': 3.0279159545898438e-05, 'checkpoint_manager_blocking_start_time': 1777148396.243358, 'checkpoint_manager_blocking_duration_secs': 0.7812130451202393}
I0425 20:19:57.024719 135131790600000 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0425 20:19:57.024773 135131790600000 max_utils.py:750] 
Memstats: After params initialized:
I0425 20:19:57.024821 135131790600000 max_utils.py:756] 	Using (GB) 0.44 / 31.25 (1.408000%) on TPU_10(process=3,(2,2,0,0))
I0425 20:19:57.024855 135131790600000 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_11(process=3,(3,2,0,0))
I0425 20:19:57.024882 135131790600000 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_14(process=3,(2,3,0,0))
I0425 20:19:57.024910 135131790600000 max_utils.py:756] 	Using (GB) 0.43 / 31.25 (1.376000%) on TPU_15(process=3,(3,3,0,0))
I0425 20:19:57.343009 135131790600000 metric_logger.py:196] completed step: 0, seconds: 14.788, TFLOP/s/device: 0.919, Tokens/s/device: 138.487, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52796.277
I0425 20:19:57.599993 135131790600000 metric_logger.py:196] completed step: 1, seconds: 1.341, TFLOP/s/device: 10.135, Tokens/s/device: 1527.647, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52796.277
I0425 20:19:58.028861 135131790600000 metric_logger.py:196] completed step: 2, seconds: 0.028, TFLOP/s/device: 480.756, Tokens/s/device: 72464.794, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28634.820
I0425 20:19:58.259802 135131790600000 metric_logger.py:196] completed step: 3, seconds: 0.429, TFLOP/s/device: 31.658, Tokens/s/device: 4771.813, total_weights: 65536, loss: 9.731, lm_loss: 9.731, perplexity: 16827.199
I0425 20:19:58.718913 135131790600000 metric_logger.py:196] completed step: 4, seconds: 0.235, TFLOP/s/device: 57.858, Tokens/s/device: 8720.943, total_weights: 65536, loss: 9.272, lm_loss: 9.272, perplexity: 10638.531
I0425 20:19:58.725035 135131790600000 metric_logger.py:196] completed step: 5, seconds: 0.231, TFLOP/s/device: 58.837, Tokens/s/device: 8868.565, total_weights: 65536, loss: 8.887, lm_loss: 8.887, perplexity: 7233.941
I0425 20:20:00.364971    2942 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0425 20:20:02.402019 134999239485184 array_metadata_store.py:203] [process=3][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_04_int8/checkpoints/0/items/array_metadatas/process_3
I0425 20:20:28.254856 135131790600000 metric_logger.py:196] completed step: 6, seconds: 0.460, TFLOP/s/device: 29.566, Tokens/s/device: 4456.466, total_weights: 65536, loss: 8.588, lm_loss: 8.588, perplexity: 5365.468
I0425 20:20:28.484202 135131790600000 metric_logger.py:196] completed step: 7, seconds: 29.301, TFLOP/s/device: 0.464, Tokens/s/device: 69.894, total_weights: 65536, loss: 8.380, lm_loss: 8.380, perplexity: 4358.779
I0425 20:20:28.715028 135131790600000 metric_logger.py:196] completed step: 8, seconds: 0.234, TFLOP/s/device: 58.040, Tokens/s/device: 8748.473, total_weights: 65536, loss: 8.251, lm_loss: 8.251, perplexity: 3831.453
I0425 20:20:28.943674 135131790600000 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0425 20:20:28.944405 135131790600000 checkpointing.py:776] Waited 0.0007550716400146484 seconds for step 9 to finish before starting checkpointing.
I0425 20:20:28.946425 135131790600000 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 20:20:30.152075 134999805531904 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 47.264 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 33.42040705680847 s) (per-host)
I0425 20:20:30.152199 134999805531904 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 33.131718s.
I0425 20:20:39.518345 134999805531904 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 42.497847s.
I0425 20:20:39.518625 134998693259008 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 20:20:39.518748 134998693259008 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0425 20:20:39.518802 134998693259008 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0425 20:20:39.520416 134998693259008 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0425 20:20:39.520589 135131790600000 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 20:20:39.520717 135131790600000 checkpoint_manager.py:1452] Waiting for previous save to complete took 10.574291 seconds. If this number is high, consider checkpointing less frequently.
I0425 20:20:39.522618 135131790600000 checkpoint_manager.py:1512] [process=3] Saving checkpoint at step 9
I0425 20:20:39.524668 135131790600000 event_tracking.py:70] [process=3] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_04_int8/checkpoints/9.
I0425 20:20:40.239423 135131790600000 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array.
I0425 20:20:40.239521 135131790600000 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 20:20:40.276233 135131790600000 base_pytree_checkpoint_handler.py:154] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.037874s
I0425 20:20:40.276405 135131790600000 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/blocking_gbytes_per_sec: 37.189 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04147911071777344 s) (per-host)
I0425 20:20:40.276457 135131790600000 base_pytree_checkpoint_handler.py:768] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.041541s (batch_requests_ready=0.001932s, total_serialization_initiated=0.039539s, others=0.000070s)
I0425 20:20:40.276558 135131790600000 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.045881s (all_items=0.000015s, per_item={'items': '0.00001454'}, temp_paths=0.045867)
I0425 20:20:40.277344 135131790600000 event_tracking.py:125] [process=3] [async] Finished blocking save in 0.75 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260425_201227/linen_xpk_test_pipeline_scan_nnx_20260425_201227_04_int8/checkpoints/9.
I0425 20:20:40.277628 134998693259008 async_checkpointer.py:76] [process=3][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-25 20:40:40.277596
I0425 20:20:40.280391 135131790600000 checkpoint_manager.py:1560] [process=3][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0425 20:20:40.280699 134999277827840 async_checkpointer.py:280] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0425 20:20:40.280865 135131790600000 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_04_int8/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1777148428.946395, 'wait_for_prev_duration_secs': 10.574290990829468, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777148439.5226562, 'checkpointer_blocking_duration_secs': 0.7551202774047852, 'get_old_steps_start_time': 1777148440.2778013, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1777148428.9446392, 'checkpoint_manager_blocking_duration_secs': 11.336191415786743}
I0425 20:20:40.280982 135131790600000 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0425 20:20:40.281034 135131790600000 checkpoint_manager.py:2020] [process=3][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0425 20:20:45.499249 134975886141184 array_metadata_store.py:203] [process=3][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_04_int8/checkpoints/9/items/array_metadatas/process_3
I0425 20:21:21.895723 134998693259008 base_pytree_checkpoint_handler.py:130] [process=3] /jax/orbax/write/gbytes_per_sec: 37.916 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 41.66075658798218 s) (per-host)
I0425 20:21:21.895844 134998693259008 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 41.618099s.
I0425 20:21:29.683592 134998693259008 async_checkpointer.py:160] [process=3][thread=async_save] Background save thread done. Time taken: 49.405833s.
I0425 20:21:29.683854 134999277827840 async_checkpointer.py:288] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0425 20:21:29.683981 134999277827840 async_checkpointer.py:298] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0425 20:21:29.684046 134999277827840 checkpoint_manager.py:2137] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0425 20:21:29.686829 134999277827840 checkpoint_manager.py:2146] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0425 20:21:29.687005 135131790600000 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 20:21:29.687155 135131790600000 checkpoint_manager.py:2009] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0425 20:21:29.688126 135131790600000 metric_logger.py:196] completed step: 9, seconds: 0.229, TFLOP/s/device: 59.222, Tokens/s/device: 8926.626, total_weights: 65536, loss: 8.175, lm_loss: 8.175, perplexity: 3552.333
Per train step:
 Total TFLOPs: 13.59 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Sat Apr 25 20:21:39 UTC 2026
EXIT_CODE=0