main (b117f50cf) vs main (59e0f1759)| Metric | main b117f50cf | main 59e0f1759 | Diff (main − main) |
|---|---|---|---|
| Parameters | 1.104 billion | 1.104 billion | — |
| Final loss | 7.1810 | 7.1810 | 0 |
| TFLOP/s | 92.266 | 92.198 | -0.068 |
| Tok/s | 13907.3 | 13897.1 | -10.192 |
| Avg s/step | 13.571 | 13.750 | +0.179 |
| Memory % | 1.38 | 1.38 | 0 |
| JAX | 0.9.2 | 0.9.2 | — |
Diff = branch value − main value. Green = branch improved. Red = branch regressed.
XPK Start: Fri Apr 24 07:48:35 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. 2026-04-24 07:49:00.166757: 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) I0424 07:49:00.372381 136089302112064 max_utils.py:273] Attempting to initialize the jax distributed system... I0424 07:49:09.413625 136089302112064 distributed.py:149] Starting JAX distributed service on [::]:8482 I0424 07:49:09.416107 136089302112064 distributed.py:172] Connecting to JAX distributed service on mt-14-async-ckpt-false--vfd7f-slice-job-0-0.mt-14-async-ckpt-false--vfd7f:8482 I0424 07:49:10.412172 136089302112064 max_utils.py:284] Jax distributed system initialized! I0424 07:49:16.499609 136089302112064 max_utils.py:800] System Information: Jax Version: 0.9.2 I0424 07:49:16.499716 136089302112064 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0424 07:49:16.499757 136089302112064 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 I0424 07:49:16.499791 136089302112064 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0424 07:49:17.197314 136089302112064 maxtext_utils.py:1604] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1) I0424 07:49:17.197597 136089302112064 checkpointing.py:677] Setting up checkpoint logger... I0424 07:49:17.197653 136089302112064 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0424 07:49:17.197698 136089302112064 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0424 07:49:17.198041 136089302112064 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 0x7bc52691cce0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0424 07:49:20.500078 136089302112064 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0424 07:49:20.500343 136089302112064 checkpoint_manager.py:708] [process=6][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7bb0dc0902c0>}, handler_registry=None I0424 07:49:20.500586 136089302112064 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7bb0dc0902c0>` 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`. I0424 07:49:20.500636 136089302112064 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7bb0dc092480>` 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`. I0424 07:49:20.500673 136089302112064 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 0x7bb0dc0902c0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7bb0dc0902c0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7bb0dc092480>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7bb0dc092480>}). I0424 07:49:20.500990 136089302112064 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0424 07:49:21.222249 136089302112064 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints I0424 07:49:21.240879 136089302112064 checkpoint_manager.py:929] [process=6][thread=MainThread] CheckpointManager created, primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=False, 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=5), 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_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7bb0dc091520> I0424 07:49:21.241004 136089302112064 checkpointing.py:301] Checkpoint manager created! I0424 07:49:22.186602 136089302112064 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0424 07:49:22.186721 136089302112064 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 07:49:22.567209 136089302112064 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0424 07:49:22.567301 136089302112064 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 07:49:22.583890 136089302112064 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0424 07:49:22.583952 136089302112064 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0424 07:49:22.607946 136089302112064 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 07:49:22.608020 136089302112064 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 07:49:22.624823 136089302112064 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 07:49:22.624890 136089302112064 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 07:49:22.641524 136089302112064 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_length_attn', 'activation_kv_heads', 'activation_kv_head_dim'). I0424 07:49:22.641585 136089302112064 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 07:49:22.666559 136089302112064 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch_attn', 'activation_length_attn', 'activation_heads', 'activation_kv'). I0424 07:49:22.666628 136089302112064 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0424 07:49:22.688072 136089302112064 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0424 07:49:22.688153 136089302112064 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0424 07:49:22.898514 136089302112064 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0424 07:49:22.898625 136089302112064 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0424 07:49:24.323312 136089302112064 maxtext_utils.py:1707] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0424 07:49:24.323444 136089302112064 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) I0424 07:49:24.323499 136089302112064 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) I0424 07:49:24.323559 136089302112064 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') I0424 07:49:24.323614 136089302112064 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) I0424 07:49:24.323656 136089302112064 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) I0424 07:49:24.323711 136089302112064 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) I0424 07:49:24.323765 136089302112064 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') I0424 07:49:24.323807 136089302112064 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) I0424 07:49:24.323844 136089302112064 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) I0424 07:49:24.323894 136089302112064 maxtext_utils.py:1707] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0424 07:49:24.323945 136089302112064 maxtext_utils.py:1707] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0424 07:49:24.815869 136089302112064 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 07:49:24.815973 136089302112064 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0424 07:49:24.831629 136089302112064 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0424 07:49:24.831691 136089302112064 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0424 07:49:36.023793 136089302112064 max_utils.py:791] Total memory size: 1.5 GB, Output size: 0.4 GB, Temp size: 1.1 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0424 07:49:36.024638 136089302112064 metric_logger.py:301] number parameters: 1.104 billion I0424 07:49:47.849042 136089302112064 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0424 07:49:48.003216 136089302112064 checkpointing.py:776] Waited 0.15415549278259277 seconds for step 0 to finish before starting checkpointing. I0424 07:49:48.005456 136089302112064 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 07:49:48.007155 136089302112064 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0424 07:49:48.008431 136089302112064 event_tracking.py:70] [process=6] [sync] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints/0. I0424 07:49:50.597757 136089302112064 signaling_client.py:364] Using JaxDistributedSignalingClient I0424 07:49:50.599139 136089302112064 future.py:372] [process=6][thread=MainThread][operation_id=1] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0424 07:49:51.968199 136089302112064 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 07:49:51.968308 136089302112064 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 I0424 07:49:52.245352 136089302112064 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.278189s I0424 07:49:52.245536 136089302112064 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.420 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.2846336364746094 s) (per-host) I0424 07:49:52.245591 136089302112064 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.284698s (batch_requests_ready=0.002880s, total_serialization_initiated=0.281745s, others=0.000073s) I0424 07:49:52.245690 136089302112064 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.648019s (all_items=0.000033s, per_item={'items': '0.00003266'}, temp_paths=1.647986) I0424 07:49:52.245735 136089302112064 future.py:372] [process=6][thread=MainThread][operation_id=1] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0424 07:49:52.245776 136089302112064 future.py:372] [process=6][thread=MainThread][operation_id=1] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0424 07:49:52.259022 2771 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0424 07:49:54.263951 135960136431360 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints/0/items/array_metadatas/process_6 I0424 07:50:25.891084 136089302112064 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 46.554 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 33.930142402648926 s) (per-host) I0424 07:50:30.474292 136089302112064 event_tracking.py:125] [process=6] [sync] Finished blocking save in 42.47 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints/0. I0424 07:50:34.678927 136089302112064 event_tracking.py:138] [process=6] [sync] Finished save in 46.67 seconds @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints/0 I0424 07:50:34.680944 136089302112064 checkpoint_manager.py:2137] [process=6][thread=MainThread][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0424 07:50:34.682678 136089302112064 checkpoint_manager.py:2146] [process=6][thread=MainThread][step=0] CheckpointManager Save Finalize is done on all hosts. I0424 07:50:34.682728 136089302112064 checkpoint_manager.py:1581] [process=6][thread=MainThread][step=0] Finished synchronous save. I0424 07:50:34.682783 136089302112064 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': True, 'wait_for_prev_start_time': 1777016988.0054379, 'wait_for_prev_duration_secs': 6.198883056640625e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777016988.0071938, 'checkpointer_blocking_duration_secs': 46.671849966049194, 'get_old_steps_start_time': 1777017034.6790674, 'get_old_steps_duration_secs': 4.57763671875e-05, 'checkpoint_manager_blocking_start_time': 1777016988.0037277, 'checkpoint_manager_blocking_duration_secs': 46.67902660369873} I0424 07:50:34.682876 136089302112064 checkpointing.py:410] Saved a checkpoint at step 0. I0424 07:50:34.682918 136089302112064 max_utils.py:750] Memstats: After params initialized: I0424 07:50:34.682964 136089302112064 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0)) I0424 07:50:34.682995 136089302112064 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0)) I0424 07:50:34.683020 136089302112064 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0)) I0424 07:50:34.683044 136089302112064 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0)) I0424 07:50:35.014268 136089302112064 metric_logger.py:196] completed step: 0, seconds: 11.824, TFLOP/s/device: 1.149, Tokens/s/device: 173.203, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0424 07:50:35.167812 136089302112064 metric_logger.py:196] completed step: 1, seconds: 47.147, TFLOP/s/device: 0.288, Tokens/s/device: 43.439, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0424 07:50:35.589613 136089302112064 metric_logger.py:196] completed step: 2, seconds: 0.023, TFLOP/s/device: 582.189, Tokens/s/device: 87753.878, total_weights: 65536, loss: 10.560, lm_loss: 10.560, perplexity: 38547.719 I0424 07:50:35.737079 136089302112064 metric_logger.py:196] completed step: 3, seconds: 0.422, TFLOP/s/device: 32.194, Tokens/s/device: 4852.678, total_weights: 65536, loss: 9.980, lm_loss: 9.980, perplexity: 21590.506 I0424 07:50:35.741951 136089302112064 checkpointing.py:772] Waiting for step 5 to finish before checkpoint... I0424 07:50:36.031052 136089302112064 checkpointing.py:776] Waited 0.2890758514404297 seconds for step 5 to finish before starting checkpointing. I0424 07:50:36.033933 136089302112064 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 07:50:36.035824 136089302112064 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 5 I0424 07:50:36.037644 136089302112064 event_tracking.py:70] [process=6] [sync] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints/5. I0424 07:50:38.810818 136089302112064 future.py:372] [process=6][thread=MainThread][operation_id=2] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0424 07:50:40.227766 136089302112064 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 07:50:40.227865 136089302112064 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 I0424 07:50:40.271354 136089302112064 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.045062s I0424 07:50:40.271544 136089302112064 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 31.563 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.048872947692871094 s) (per-host) I0424 07:50:40.271603 136089302112064 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.048943s (batch_requests_ready=0.002031s, total_serialization_initiated=0.046834s, others=0.000079s) I0424 07:50:40.271708 136089302112064 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.462156s (all_items=0.000027s, per_item={'items': '0.00002718'}, temp_paths=1.462129) I0424 07:50:40.271750 136089302112064 future.py:372] [process=6][thread=MainThread][operation_id=2] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0424 07:50:40.271788 136089302112064 future.py:372] [process=6][thread=MainThread][operation_id=2] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0424 07:50:42.319654 135960136431360 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints/5/items/array_metadatas/process_6 I0424 07:51:19.245943 136089302112064 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 40.478 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 39.02323579788208 s) (per-host) I0424 07:51:23.377777 136089302112064 event_tracking.py:125] [process=6] [sync] Finished blocking save in 47.34 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints/5. I0424 07:51:27.257226 136089302112064 event_tracking.py:138] [process=6] [sync] Finished save in 51.22 seconds @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints/5 I0424 07:51:27.259112 136089302112064 checkpoint_manager.py:2137] [process=6][thread=MainThread][step=5] CheckpointManager Save Finalize is syncing with other hosts... I0424 07:51:27.260741 136089302112064 checkpoint_manager.py:2146] [process=6][thread=MainThread][step=5] CheckpointManager Save Finalize is done on all hosts. I0424 07:51:27.260792 136089302112064 checkpoint_manager.py:1581] [process=6][thread=MainThread][step=5] Finished synchronous save. I0424 07:51:27.260843 136089302112064 standard_logger.py:34] {'step': 5, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': True, 'wait_for_prev_start_time': 1777017036.0339131, 'wait_for_prev_duration_secs': 6.031990051269531e-05, 'time_between_consecutive_saves_sec': 1.3511958122253418, 'checkpointer_blocking_start_time': 1777017036.0358617, 'checkpointer_blocking_duration_secs': 51.2214879989624, 'get_old_steps_start_time': 1777017087.257372, 'get_old_steps_duration_secs': 2.574920654296875e-05, 'checkpoint_manager_blocking_start_time': 1777017036.0317092, 'checkpoint_manager_blocking_duration_secs': 51.22910785675049} I0424 07:51:27.260933 136089302112064 checkpointing.py:410] Saved a checkpoint at step 5. I0424 07:51:27.261754 136089302112064 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.905, Tokens/s/device: 13400.773, total_weights: 65536, loss: 9.460, lm_loss: 9.460, perplexity: 12840.355 I0424 07:51:27.285948 136089302112064 metric_logger.py:196] completed step: 5, seconds: 0.148, TFLOP/s/device: 91.917, Tokens/s/device: 13854.688, total_weights: 65536, loss: 8.959, lm_loss: 8.959, perplexity: 7776.467 I0424 07:51:49.839295 136089302112064 metric_logger.py:196] completed step: 6, seconds: 51.524, TFLOP/s/device: 0.264, Tokens/s/device: 39.748, total_weights: 65536, loss: 8.469, lm_loss: 8.469, perplexity: 4762.740 I0424 07:51:49.986777 136089302112064 metric_logger.py:196] completed step: 7, seconds: 22.425, TFLOP/s/device: 0.606, Tokens/s/device: 91.325, total_weights: 65536, loss: 8.003, lm_loss: 8.003, perplexity: 2989.151 I0424 07:51:50.134215 136089302112064 metric_logger.py:196] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.205, Tokens/s/device: 13445.996, total_weights: 65536, loss: 7.572, lm_loss: 7.572, perplexity: 1943.098 I0424 07:51:50.281141 136089302112064 checkpointing.py:772] Waiting for step 9 to finish before checkpoint... I0424 07:51:50.281839 136089302112064 checkpointing.py:776] Waited 0.0007488727569580078 seconds for step 9 to finish before starting checkpointing. I0424 07:51:50.283854 136089302112064 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 07:51:50.285324 136089302112064 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0424 07:51:50.286761 136089302112064 event_tracking.py:70] [process=6] [sync] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints/9. I0424 07:51:53.228693 136089302112064 future.py:372] [process=6][thread=MainThread][operation_id=3] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0424 07:51:54.707653 136089302112064 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0424 07:51:54.707752 136089302112064 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 I0424 07:51:54.749561 136089302112064 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.042964s I0424 07:51:54.749737 136089302112064 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 32.904 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04688072204589844 s) (per-host) I0424 07:51:54.749790 136089302112064 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.046943s (batch_requests_ready=0.001995s, total_serialization_initiated=0.044881s, others=0.000067s) I0424 07:51:54.749889 136089302112064 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.522378s (all_items=0.000021s, per_item={'items': '0.00002074'}, temp_paths=1.522357) I0424 07:51:54.749930 136089302112064 future.py:372] [process=6][thread=MainThread][operation_id=3] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0424 07:51:54.749967 136089302112064 future.py:372] [process=6][thread=MainThread][operation_id=3] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0424 07:51:57.201070 135964437509888 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints/9/items/array_metadatas/process_6 I0424 07:52:33.077620 136089302112064 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 41.162 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 38.37471151351929 s) (per-host) I0424 07:52:37.687731 136089302112064 event_tracking.py:125] [process=6] [sync] Finished blocking save in 47.40 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints/9. I0424 07:52:42.222501 136089302112064 event_tracking.py:138] [process=6] [sync] Finished save in 51.94 seconds @ gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints/9 I0424 07:52:42.224480 136089302112064 checkpoint_manager.py:2137] [process=6][thread=MainThread][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0424 07:52:42.226106 136089302112064 checkpoint_manager.py:2146] [process=6][thread=MainThread][step=9] CheckpointManager Save Finalize is done on all hosts. I0424 07:52:42.226163 136089302112064 checkpoint_manager.py:1581] [process=6][thread=MainThread][step=9] Finished synchronous save. I0424 07:52:42.226220 136089302112064 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260424_070227/linen_xpk_main_20260424_070227_14_async_ckpt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': True, 'wait_for_prev_start_time': 1777017110.283837, 'wait_for_prev_duration_secs': 5.745887756347656e-05, 'time_between_consecutive_saves_sec': 23.023056745529175, 'checkpointer_blocking_start_time': 1777017110.2853622, 'checkpointer_blocking_duration_secs': 51.93725848197937, 'get_old_steps_start_time': 1777017162.2226353, 'get_old_steps_duration_secs': 1.8835067749023438e-05, 'checkpoint_manager_blocking_start_time': 1777017110.282062, 'checkpoint_manager_blocking_duration_secs': 51.94412803649902} I0424 07:52:42.226333 136089302112064 checkpointing.py:410] Saved a checkpoint at step 9. I0424 07:52:42.226372 136089302112064 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 07:52:42.226408 136089302112064 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0424 07:52:42.227198 136089302112064 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.266, Tokens/s/device: 13907.280, total_weights: 65536, loss: 7.181, lm_loss: 7.181, perplexity: 1314.495 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Fri Apr 24 07:52:55 UTC 2026 EXIT_CODE=0
XPK Start: Sat Apr 25 07:56:47 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 07:57:12.199149: 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 07:57:12.403150 134776766510912 max_utils.py:273] Attempting to initialize the jax distributed system... I0425 07:57:21.443750 134776766510912 distributed.py:149] Starting JAX distributed service on [::]:8482 I0425 07:57:21.446210 134776766510912 distributed.py:172] Connecting to JAX distributed service on mt-14-async-ckpt-false--93pg7-slice-job-0-0.mt-14-async-ckpt-false--93pg7:8482 I0425 07:57:22.365514 134776766510912 max_utils.py:284] Jax distributed system initialized! I0425 07:57:28.659400 134776766510912 max_utils.py:800] System Information: Jax Version: 0.9.2 I0425 07:57:28.659512 134776766510912 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0425 07:57:28.659552 134776766510912 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 07:57:28.659584 134776766510912 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0425 07:57:29.359586 134776766510912 maxtext_utils.py:1604] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1) I0425 07:57:29.359872 134776766510912 checkpointing.py:677] Setting up checkpoint logger... I0425 07:57:29.359927 134776766510912 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0425 07:57:29.359972 134776766510912 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0425 07:57:29.360337 134776766510912 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 0x7a938851efc0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0425 07:57:32.213061 134776766510912 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0425 07:57:32.213320 134776766510912 checkpoint_manager.py:708] [process=6][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a7f1c721910>}, handler_registry=None I0425 07:57:32.213566 134776766510912 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a7f1c721910>` 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 07:57:32.213614 134776766510912 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a9265601eb0>` 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 07:57:32.213650 134776766510912 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 0x7a7f1c721910>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7a7f1c721910>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a9265601eb0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7a9265601eb0>}). I0425 07:57:32.213970 134776766510912 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0425 07:57:33.068856 134776766510912 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints I0425 07:57:33.485651 134776766510912 checkpoint_manager.py:929] [process=6][thread=MainThread] CheckpointManager created, primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=False, 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=5), 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_14_async_ckpt_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7a7f1c7bdf10> I0425 07:57:33.485817 134776766510912 checkpointing.py:301] Checkpoint manager created! I0425 07:57:34.435693 134776766510912 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0425 07:57:34.435813 134776766510912 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 07:57:34.821189 134776766510912 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0425 07:57:34.821282 134776766510912 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 07:57:34.838085 134776766510912 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch_attn', 'activation_length_attn', 'activation_embed_attn'). I0425 07:57:34.838413 134776766510912 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0425 07:57:34.867143 134776766510912 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 07:57:34.867215 134776766510912 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 07:57:34.883922 134776766510912 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 07:57:34.883984 134776766510912 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 07:57:34.900661 134776766510912 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 07:57:34.900721 134776766510912 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 07:57:34.925563 134776766510912 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch_attn', 'activation_length_attn', 'activation_heads', 'activation_kv'). I0425 07:57:34.925634 134776766510912 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0425 07:57:34.946873 134776766510912 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0425 07:57:34.946939 134776766510912 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0425 07:57:35.156608 134776766510912 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0425 07:57:35.156716 134776766510912 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0425 07:57:36.607019 134776766510912 maxtext_utils.py:1707] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0425 07:57:36.607216 134776766510912 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 07:57:36.607275 134776766510912 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 07:57:36.607337 134776766510912 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 07:57:36.607396 134776766510912 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 07:57:36.607437 134776766510912 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 07:57:36.607488 134776766510912 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 07:57:36.607540 134776766510912 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 07:57:36.607578 134776766510912 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 07:57:36.607615 134776766510912 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 07:57:36.607663 134776766510912 maxtext_utils.py:1707] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0425 07:57:36.607712 134776766510912 maxtext_utils.py:1707] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0425 07:57:37.101302 134776766510912 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0425 07:57:37.101404 134776766510912 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0425 07:57:37.117297 134776766510912 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0425 07:57:37.117362 134776766510912 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0425 07:57:48.098979 134776766510912 max_utils.py:791] Total memory size: 1.5 GB, Output size: 0.4 GB, Temp size: 1.1 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB. I0425 07:57:48.099933 134776766510912 metric_logger.py:301] number parameters: 1.104 billion I0425 07:57:59.275977 134776766510912 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0425 07:57:59.646345 134776766510912 checkpointing.py:776] Waited 0.3703465461730957 seconds for step 0 to finish before starting checkpointing. I0425 07:57:59.648680 134776766510912 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 07:57:59.650428 134776766510912 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0425 07:57:59.651751 134776766510912 event_tracking.py:70] [process=6] [sync] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints/0. I0425 07:58:02.204953 134776766510912 signaling_client.py:364] Using JaxDistributedSignalingClient I0425 07:58:02.206400 134776766510912 future.py:372] [process=6][thread=MainThread][operation_id=1] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0425 07:58:03.577879 134776766510912 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0425 07:58:03.577975 134776766510912 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 07:58:03.856787 134776766510912 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.280076s I0425 07:58:03.857028 134776766510912 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.393 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.28603529930114746 s) (per-host) I0425 07:58:03.857104 134776766510912 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.286156s (batch_requests_ready=0.002585s, total_serialization_initiated=0.283442s, others=0.000129s) I0425 07:58:03.857237 134776766510912 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.652366s (all_items=0.000033s, per_item={'items': '0.00003266'}, temp_paths=1.652334) I0425 07:58:03.857288 134776766510912 future.py:372] [process=6][thread=MainThread][operation_id=1] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0425 07:58:03.857332 134776766510912 future.py:372] [process=6][thread=MainThread][operation_id=1] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0425 07:58:03.870624 2770 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0425 07:58:05.889319 134647858059008 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints/0/items/array_metadatas/process_6 I0425 07:58:35.843606 134776766510912 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 48.945 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 32.27262353897095 s) (per-host) I0425 07:58:42.208674 134776766510912 event_tracking.py:125] [process=6] [sync] Finished blocking save in 42.56 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints/0. I0425 07:58:46.192652 134776766510912 event_tracking.py:138] [process=6] [sync] Finished save in 46.54 seconds @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints/0 I0425 07:58:46.194893 134776766510912 checkpoint_manager.py:2137] [process=6][thread=MainThread][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0425 07:58:46.196559 134776766510912 checkpoint_manager.py:2146] [process=6][thread=MainThread][step=0] CheckpointManager Save Finalize is done on all hosts. I0425 07:58:46.196610 134776766510912 checkpoint_manager.py:1581] [process=6][thread=MainThread][step=0] Finished synchronous save. I0425 07:58:46.196666 134776766510912 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': True, 'wait_for_prev_start_time': 1777103879.648662, 'wait_for_prev_duration_secs': 5.936622619628906e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1777103879.650467, 'checkpointer_blocking_duration_secs': 46.5423047542572, 'get_old_steps_start_time': 1777103926.192794, 'get_old_steps_duration_secs': 2.7418136596679688e-05, 'checkpoint_manager_blocking_start_time': 1777103879.6468844, 'checkpoint_manager_blocking_duration_secs': 46.54975247383118} I0425 07:58:46.196756 134776766510912 checkpointing.py:410] Saved a checkpoint at step 0. I0425 07:58:46.196798 134776766510912 max_utils.py:750] Memstats: After params initialized: I0425 07:58:46.196843 134776766510912 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_24(process=6,(0,6,0,0)) I0425 07:58:46.196873 134776766510912 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_25(process=6,(1,6,0,0)) I0425 07:58:46.196899 134776766510912 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_28(process=6,(0,7,0,0)) I0425 07:58:46.196921 134776766510912 max_utils.py:756] Using (GB) 0.43 / 31.25 (1.376000%) on TPU_29(process=6,(1,7,0,0)) I0425 07:58:46.520591 134776766510912 metric_logger.py:196] completed step: 0, seconds: 11.176, TFLOP/s/device: 1.216, Tokens/s/device: 183.251, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0425 07:58:46.678000 134776766510912 metric_logger.py:196] completed step: 1, seconds: 47.226, TFLOP/s/device: 0.288, Tokens/s/device: 43.366, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0425 07:58:47.086070 134776766510912 metric_logger.py:196] completed step: 2, seconds: 0.027, TFLOP/s/device: 507.096, Tokens/s/device: 76435.023, total_weights: 65536, loss: 10.560, lm_loss: 10.560, perplexity: 38547.719 I0425 07:58:47.233330 134776766510912 metric_logger.py:196] completed step: 3, seconds: 0.409, TFLOP/s/device: 33.247, Tokens/s/device: 5011.317, total_weights: 65536, loss: 9.980, lm_loss: 9.980, perplexity: 21590.506 I0425 07:58:47.238110 134776766510912 checkpointing.py:772] Waiting for step 5 to finish before checkpoint... I0425 07:58:47.527420 134776766510912 checkpointing.py:776] Waited 0.28929567337036133 seconds for step 5 to finish before starting checkpointing. I0425 07:58:47.530316 134776766510912 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 07:58:47.532021 134776766510912 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 5 I0425 07:58:47.533813 134776766510912 event_tracking.py:70] [process=6] [sync] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints/5. I0425 07:58:49.936398 134776766510912 future.py:372] [process=6][thread=MainThread][operation_id=2] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0425 07:58:51.295515 134776766510912 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0425 07:58:51.295622 134776766510912 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 07:58:51.340180 134776766510912 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.045670s I0425 07:58:51.340368 134776766510912 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 30.746 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.0501708984375 s) (per-host) I0425 07:58:51.340422 134776766510912 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.050235s (batch_requests_ready=0.001909s, total_serialization_initiated=0.048253s, others=0.000073s) I0425 07:58:51.340525 134776766510912 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.405482s (all_items=0.000024s, per_item={'items': '0.00002384'}, temp_paths=1.405458) I0425 07:58:51.340575 134776766510912 future.py:372] [process=6][thread=MainThread][operation_id=2] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0425 07:58:51.340613 134776766510912 future.py:372] [process=6][thread=MainThread][operation_id=2] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0425 07:58:53.353472 134641981843200 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints/5/items/array_metadatas/process_6 I0425 07:59:29.125130 134776766510912 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 41.750 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.83489966392517 s) (per-host) I0425 07:59:36.074475 134776766510912 event_tracking.py:125] [process=6] [sync] Finished blocking save in 48.54 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints/5. I0425 07:59:40.495891 134776766510912 event_tracking.py:138] [process=6] [sync] Finished save in 52.96 seconds @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints/5 I0425 07:59:40.497807 134776766510912 checkpoint_manager.py:2137] [process=6][thread=MainThread][step=5] CheckpointManager Save Finalize is syncing with other hosts... I0425 07:59:40.499559 134776766510912 checkpoint_manager.py:2146] [process=6][thread=MainThread][step=5] CheckpointManager Save Finalize is done on all hosts. I0425 07:59:40.499610 134776766510912 checkpoint_manager.py:1581] [process=6][thread=MainThread][step=5] Finished synchronous save. I0425 07:59:40.499662 134776766510912 standard_logger.py:34] {'step': 5, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': True, 'wait_for_prev_start_time': 1777103927.530292, 'wait_for_prev_duration_secs': 6.604194641113281e-05, 'time_between_consecutive_saves_sec': 1.333693027496338, 'checkpointer_blocking_start_time': 1777103927.5320623, 'checkpointer_blocking_duration_secs': 52.96394634246826, 'get_old_steps_start_time': 1777103980.4960308, 'get_old_steps_duration_secs': 2.5272369384765625e-05, 'checkpoint_manager_blocking_start_time': 1777103927.528068, 'checkpoint_manager_blocking_duration_secs': 52.971567153930664} I0425 07:59:40.499754 134776766510912 checkpointing.py:410] Saved a checkpoint at step 5. I0425 07:59:40.500578 134776766510912 metric_logger.py:196] completed step: 4, seconds: 0.153, TFLOP/s/device: 88.570, Tokens/s/device: 13350.282, total_weights: 65536, loss: 9.460, lm_loss: 9.460, perplexity: 12840.355 I0425 07:59:40.524495 134776766510912 metric_logger.py:196] completed step: 5, seconds: 0.147, TFLOP/s/device: 92.555, Tokens/s/device: 13950.859, total_weights: 65536, loss: 8.959, lm_loss: 8.959, perplexity: 7776.467 I0425 08:00:02.872832 134776766510912 metric_logger.py:196] completed step: 6, seconds: 53.267, TFLOP/s/device: 0.255, Tokens/s/device: 38.448, total_weights: 65536, loss: 8.469, lm_loss: 8.469, perplexity: 4762.740 I0425 08:00:03.020196 134776766510912 metric_logger.py:196] completed step: 7, seconds: 22.220, TFLOP/s/device: 0.611, Tokens/s/device: 92.169, total_weights: 65536, loss: 8.003, lm_loss: 8.003, perplexity: 2989.151 I0425 08:00:03.167504 134776766510912 metric_logger.py:196] completed step: 8, seconds: 0.152, TFLOP/s/device: 89.145, Tokens/s/device: 13436.910, total_weights: 65536, loss: 7.572, lm_loss: 7.572, perplexity: 1943.098 I0425 08:00:03.314464 134776766510912 checkpointing.py:772] Waiting for step 9 to finish before checkpoint... I0425 08:00:03.315162 134776766510912 checkpointing.py:776] Waited 0.0007183551788330078 seconds for step 9 to finish before starting checkpointing. I0425 08:00:03.317201 134776766510912 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 08:00:03.319087 134776766510912 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0425 08:00:03.320499 134776766510912 event_tracking.py:70] [process=6] [sync] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints/9. I0425 08:00:05.962006 134776766510912 future.py:372] [process=6][thread=MainThread][operation_id=3] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0425 08:00:07.366605 134776766510912 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0425 08:00:07.366703 134776766510912 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 08:00:07.413008 134776766510912 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.047667s I0425 08:00:07.420272 134776766510912 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 26.361 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.0585172176361084 s) (per-host) I0425 08:00:07.420343 134776766510912 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.058602s (batch_requests_ready=0.001905s, total_serialization_initiated=0.056605s, others=0.000093s) I0425 08:00:07.420453 134776766510912 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 1.459661s (all_items=0.000017s, per_item={'items': '0.00001740'}, temp_paths=1.459644) I0425 08:00:07.420495 134776766510912 future.py:372] [process=6][thread=MainThread][operation_id=3] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0425 08:00:07.420539 134776766510912 future.py:372] [process=6][thread=MainThread][operation_id=3] _SignalingThread.join() waiting for signals ([]) blocking the main thread will slow down blocking save times. This is likely due to main thread calling result() on a CommitFuture. I0425 08:00:09.456998 134696632710912 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints/9/items/array_metadatas/process_6 I0425 08:00:46.040547 134776766510912 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 40.839 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 38.67874884605408 s) (per-host) I0425 08:00:50.601877 134776766510912 event_tracking.py:125] [process=6] [sync] Finished blocking save in 47.28 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints/9. I0425 08:00:54.461299 134776766510912 event_tracking.py:138] [process=6] [sync] Finished save in 51.14 seconds @ gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints/9 I0425 08:00:54.463797 134776766510912 checkpoint_manager.py:2137] [process=6][thread=MainThread][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0425 08:00:54.465483 134776766510912 checkpoint_manager.py:2146] [process=6][thread=MainThread][step=9] CheckpointManager Save Finalize is done on all hosts. I0425 08:00:54.465537 134776766510912 checkpoint_manager.py:1581] [process=6][thread=MainThread][step=9] Finished synchronous save. I0425 08:00:54.465587 134776766510912 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260425_071456/linen_xpk_main_20260425_071456_14_async_ckpt_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': True, 'wait_for_prev_start_time': 1777104003.3171835, 'wait_for_prev_duration_secs': 5.841255187988281e-05, 'time_between_consecutive_saves_sec': 22.817583799362183, 'checkpointer_blocking_start_time': 1777104003.3191442, 'checkpointer_blocking_duration_secs': 51.14227747917175, 'get_old_steps_start_time': 1777104054.461435, 'get_old_steps_duration_secs': 2.0503997802734375e-05, 'checkpoint_manager_blocking_start_time': 1777104003.315397, 'checkpoint_manager_blocking_duration_secs': 51.150166034698486} I0425 08:00:54.465674 134776766510912 checkpointing.py:410] Saved a checkpoint at step 9. I0425 08:00:54.465705 134776766510912 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 08:00:54.465733 134776766510912 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0425 08:00:54.466378 134776766510912 metric_logger.py:196] completed step: 9, seconds: 0.147, TFLOP/s/device: 92.198, Tokens/s/device: 13897.088, total_weights: 65536, loss: 7.181, lm_loss: 7.181, perplexity: 1314.495 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Sat Apr 25 08:01:07 UTC 2026 EXIT_CODE=0