main (8a17c3d19) vs test/pipeline-scan-nnx (5b21b66fc)| Metric | main 8a17c3d19 | test/pipeline-scan-nnx 5b21b66fc | Diff (test/pipeline-scan-nnx − main) |
|---|---|---|---|
| Parameters | 1.104 billion | 1.104 billion | — |
| Final loss | 8.1790 | 8.1790 | 0 |
| TFLOP/s | 83.626 | 83.583 | -0.043 |
| Tok/s | 12605.1 | 12598.5 | -6.591 |
| Avg s/step | 2.737 | 2.768 | +0.031 |
| Memory % | 0.54 | 0.54 | 0 |
| JAX | 0.9.2 | 0.9.2 | — |
Diff = branch value − main value. Green = branch improved. Red = branch regressed.
XPK Start: Wed Apr 22 07:54:04 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. 2026-04-22 07:54:29.306583: 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) I0422 07:54:29.520171 137948336392000 max_utils.py:273] Attempting to initialize the jax distributed system... I0422 07:54:38.559193 137948336392000 distributed.py:149] Starting JAX distributed service on [::]:8482 I0422 07:54:38.561521 137948336392000 distributed.py:172] Connecting to JAX distributed service on mt-11-optimizer-offload-va803-slice-job-0-0.mt-11-optimizer-offload-va803:8482 I0422 07:54:39.560363 137948336392000 max_utils.py:284] Jax distributed system initialized! I0422 07:54:44.871335 137948336392000 max_utils.py:800] System Information: Jax Version: 0.9.2 I0422 07:54:44.871441 137948336392000 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0422 07:54:44.871480 137948336392000 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 I0422 07:54:44.871516 137948336392000 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0422 07:54:45.566043 137948336392000 maxtext_utils.py:1604] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0422 07:54:45.566344 137948336392000 checkpointing.py:677] Setting up checkpoint logger... I0422 07:54:45.566402 137948336392000 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0422 07:54:45.566447 137948336392000 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0422 07:54:45.566787 137948336392000 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 0x7d75e1f1fe90>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0422 07:54:48.504633 137948336392000 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0422 07:54:48.504870 137948336392000 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 0x7d622c589a60>}, handler_registry=None I0422 07:54:48.505103 137948336392000 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7d622c589a60>` 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`. I0422 07:54:48.505151 137948336392000 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d622c591760>` 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`. I0422 07:54:48.505187 137948336392000 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 0x7d622c589a60>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7d622c589a60>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d622c591760>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7d622c591760>}). I0422 07:54:48.505545 137948336392000 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0422 07:54:48.505615 137948336392000 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7d622c1b9580> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0422 07:54:50.074041 137948336392000 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_11_optimizer_offload_true/checkpoints I0422 07:54:51.365875 137948336392000 checkpoint_manager.py:929] [process=6][thread=MainThread] CheckpointManager created, primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=True, async_options=None, multiprocessing_options=MultiprocessingOptions(primary_host=0, active_processes=None, barrier_sync_key_prefix=None), should_save_fn=None, file_options=FileOptions(path_permission_mode=None), save_root_metadata=True, temporary_path_class=None, save_decision_policy=FixedIntervalPolicy(interval=10), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False, lightweight_initialize=False), root_directory=gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_11_optimizer_offload_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7d622c58b080> I0422 07:54:51.366053 137948336392000 checkpointing.py:301] Checkpoint manager created! I0422 07:54:52.289310 137948336392000 nnx_wrappers.py:437] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0422 07:54:52.289431 137948336392000 nnx_wrappers.py:437] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 07:54:52.671364 137948336392000 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0422 07:54:52.671460 137948336392000 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 07:54:52.687880 137948336392000 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0422 07:54:52.687941 137948336392000 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 07:54:52.711562 137948336392000 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 07:54:52.711637 137948336392000 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 07:54:52.727935 137948336392000 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 07:54:52.727996 137948336392000 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 07:54:52.744332 137948336392000 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 07:54:52.744397 137948336392000 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 07:54:52.774186 137948336392000 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0422 07:54:52.774303 137948336392000 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 07:54:52.795945 137948336392000 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0422 07:54:52.796011 137948336392000 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0422 07:54:53.006311 137948336392000 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0422 07:54:53.006421 137948336392000 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0422 07:54:54.597636 137948336392000 maxtext_utils.py:1707] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0422 07:54:54.597763 137948336392000 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) I0422 07:54:54.597817 137948336392000 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) I0422 07:54:54.597875 137948336392000 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') I0422 07:54:54.597930 137948336392000 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) I0422 07:54:54.597969 137948336392000 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) I0422 07:54:54.598020 137948336392000 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) I0422 07:54:54.598072 137948336392000 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') I0422 07:54:54.598111 137948336392000 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) I0422 07:54:54.598148 137948336392000 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) I0422 07:54:54.598195 137948336392000 maxtext_utils.py:1707] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0422 07:54:54.598241 137948336392000 maxtext_utils.py:1707] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0422 07:54:55.087557 137948336392000 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0422 07:54:55.087649 137948336392000 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0422 07:54:55.103096 137948336392000 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0422 07:54:55.103157 137948336392000 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0422 07:55:05.989418 137948336392000 max_utils.py:791] Total memory size: 1.3 GB, Output size: 0.1 GB, Temp size: 1.1 GB, Argument size: 0.1 GB, Host temp size: 0.0 GB. I0422 07:55:05.990317 137948336392000 metric_logger.py:301] number parameters: 1.104 billion I0422 07:55:17.669755 137948336392000 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0422 07:55:17.838344 137948336392000 checkpointing.py:776] Waited 0.16853690147399902 seconds for step 0 to finish before starting checkpointing. I0422 07:55:17.840741 137948336392000 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 07:55:17.842523 137948336392000 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0422 07:55:17.844006 137948336392000 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_11_optimizer_offload_true/checkpoints/0. I0422 07:55:18.150923 137948336392000 signaling_client.py:364] Using JaxDistributedSignalingClient I0422 07:55:18.151973 137948336392000 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0422 07:55:18.152029 137948336392000 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 I0422 07:55:18.422970 137948336392000 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.272123s I0422 07:55:18.423151 137948336392000 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.538 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.27854108810424805 s) (per-host) I0422 07:55:18.423202 137948336392000 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.278609s (batch_requests_ready=0.002281s, total_serialization_initiated=0.276252s, others=0.000076s) I0422 07:55:18.423312 137948336392000 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.282653s (all_items=0.000018s, per_item={'items': '0.00001836'}, temp_paths=0.282634) I0422 07:55:18.424104 137948336392000 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.58 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_11_optimizer_offload_true/checkpoints/0. I0422 07:55:18.424473 137815727777536 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 08:15:18.424434 I0422 07:55:18.428472 137948336392000 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0422 07:55:18.428773 137815586113280 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0422 07:55:18.428929 137948336392000 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_11_optimizer_offload_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776844517.840723, 'wait_for_prev_duration_secs': 6.270408630371094e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776844517.842564, 'checkpointer_blocking_duration_secs': 0.5820703506469727, 'get_old_steps_start_time': 1776844518.42466, 'get_old_steps_duration_secs': 2.9325485229492188e-05, 'checkpoint_manager_blocking_start_time': 1776844517.8389087, 'checkpoint_manager_blocking_duration_secs': 0.5899815559387207} I0422 07:55:18.429037 137948336392000 checkpointing.py:408] Started an asynchronous checkpoint save for step 0 I0422 07:55:18.429096 137948336392000 max_utils.py:750] Memstats: After params initialized: I0422 07:55:18.429144 137948336392000 max_utils.py:756] Using (GB) 0.17 / 31.25 (0.544000%) on TPU_24(process=6,(0,6,0,0)) I0422 07:55:18.429178 137948336392000 max_utils.py:756] Using (GB) 0.17 / 31.25 (0.544000%) on TPU_25(process=6,(1,6,0,0)) I0422 07:55:18.429206 137948336392000 max_utils.py:756] Using (GB) 0.17 / 31.25 (0.544000%) on TPU_28(process=6,(0,7,0,0)) I0422 07:55:18.429234 137948336392000 max_utils.py:756] Using (GB) 0.17 / 31.25 (0.544000%) on TPU_29(process=6,(1,7,0,0)) I0422 07:55:18.742632 137948336392000 metric_logger.py:196] completed step: 0, seconds: 11.679, TFLOP/s/device: 1.163, Tokens/s/device: 175.352, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0422 07:55:18.929448 137948336392000 metric_logger.py:196] completed step: 1, seconds: 1.071, TFLOP/s/device: 12.682, Tokens/s/device: 1911.637, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0422 07:55:19.339333 137948336392000 metric_logger.py:196] completed step: 2, seconds: 0.024, TFLOP/s/device: 567.620, Tokens/s/device: 85557.923, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129 I0422 07:55:19.502312 137948336392000 metric_logger.py:196] completed step: 3, seconds: 0.410, TFLOP/s/device: 33.139, Tokens/s/device: 4995.049, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.047 I0422 07:55:19.828365 137948336392000 metric_logger.py:196] completed step: 4, seconds: 0.169, TFLOP/s/device: 80.539, Tokens/s/device: 12139.749, total_weights: 65536, loss: 9.278, lm_loss: 9.278, perplexity: 10694.968 I0422 07:55:19.834508 137948336392000 metric_logger.py:196] completed step: 5, seconds: 0.163, TFLOP/s/device: 83.374, Tokens/s/device: 12567.039, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.520 I0422 07:55:21.499222 2732 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0422 07:55:24.904046 137815594505984 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_11_optimizer_offload_true/checkpoints/0/items/array_metadatas/process_6 I0422 07:55:42.139524 137948336392000 metric_logger.py:196] completed step: 6, seconds: 0.327, TFLOP/s/device: 41.586, Tokens/s/device: 6268.288, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.688 I0422 07:55:42.302311 137948336392000 metric_logger.py:196] completed step: 7, seconds: 22.143, TFLOP/s/device: 0.614, Tokens/s/device: 92.490, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4377.010 I0422 07:55:42.465031 137948336392000 metric_logger.py:196] completed step: 8, seconds: 0.168, TFLOP/s/device: 81.039, Tokens/s/device: 12215.125, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3845.943 I0422 07:55:42.627360 137948336392000 checkpointing.py:772] Waiting for step 9 to finish before checkpoint... I0422 07:55:42.627936 137948336392000 checkpointing.py:776] Waited 0.0005986690521240234 seconds for step 9 to finish before starting checkpointing. I0422 07:55:42.630036 137948336392000 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 07:55:55.887483 137815727777536 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 41.850 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.74284219741821 s) (per-host) I0422 07:55:55.887603 137815727777536 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.463013s. I0422 07:56:04.708600 137815727777536 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 46.283994s. I0422 07:56:04.708891 137815586113280 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 07:56:04.709008 137815586113280 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0422 07:56:04.709072 137815586113280 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0422 07:56:04.710690 137815586113280 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0422 07:56:04.710876 137948336392000 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0422 07:56:04.711010 137948336392000 checkpoint_manager.py:1452] Waiting for previous save to complete took 22.080975 seconds. If this number is high, consider checkpointing less frequently. I0422 07:56:04.712853 137948336392000 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0422 07:56:04.714958 137948336392000 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_11_optimizer_offload_true/checkpoints/9. I0422 07:56:05.426498 137948336392000 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0422 07:56:05.426595 137948336392000 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 I0422 07:56:05.460991 137948336392000 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.035435s I0422 07:56:05.461162 137948336392000 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 39.678 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.038875579833984375 s) (per-host) I0422 07:56:05.461212 137948336392000 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.038938s (batch_requests_ready=0.001829s, total_serialization_initiated=0.037039s, others=0.000070s) I0422 07:56:05.461316 137948336392000 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.043830s (all_items=0.000015s, per_item={'items': '0.00001478'}, temp_paths=0.043815) I0422 07:56:05.462079 137948336392000 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.75 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_11_optimizer_offload_true/checkpoints/9. I0422 07:56:05.462411 137815586113280 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 08:16:05.462377 I0422 07:56:05.464407 137948336392000 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0422 07:56:05.464686 137794013832960 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0422 07:56:05.464846 137948336392000 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_11_optimizer_offload_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776844542.6300058, 'wait_for_prev_duration_secs': 22.080974817276, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776844564.712894, 'checkpointer_blocking_duration_secs': 0.7496590614318848, 'get_old_steps_start_time': 1776844565.4625773, 'get_old_steps_duration_secs': 3.0279159545898438e-05, 'checkpoint_manager_blocking_start_time': 1776844542.6281776, 'checkpoint_manager_blocking_duration_secs': 22.83663582801819} I0422 07:56:05.464952 137948336392000 checkpointing.py:408] Started an asynchronous checkpoint save for step 9 I0422 07:56:05.464997 137948336392000 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 07:56:10.476979 137815594505984 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_main_20260422_071422/linen_xpk_main_20260422_071422_11_optimizer_offload_true/checkpoints/9/items/array_metadatas/process_6 I0422 07:56:48.469789 137815586113280 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 36.693 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 43.047465085983276 s) (per-host) I0422 07:56:48.469914 137815586113280 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 43.007388s. I0422 07:56:58.032939 137815586113280 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 52.570397s. I0422 07:56:58.033242 137794013832960 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 07:56:58.033404 137794013832960 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0422 07:56:58.033454 137794013832960 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0422 07:56:58.035804 137794013832960 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0422 07:56:58.036001 137948336392000 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9. I0422 07:56:58.036169 137948336392000 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 07:56:58.037316 137948336392000 metric_logger.py:196] completed step: 9, seconds: 0.162, TFLOP/s/device: 83.626, Tokens/s/device: 12605.094, total_weights: 65536, loss: 8.179, lm_loss: 8.179, perplexity: 3564.739 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Wed Apr 22 07:57:09 UTC 2026 EXIT_CODE=0
XPK Start: Wed Apr 22 22:06:03 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. 2026-04-22 22:06:28.402304: 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) I0422 22:06:28.615382 135125265119040 max_utils.py:273] Attempting to initialize the jax distributed system... I0422 22:06:37.657827 135125265119040 distributed.py:149] Starting JAX distributed service on [::]:8482 I0422 22:06:37.660207 135125265119040 distributed.py:172] Connecting to JAX distributed service on mt-11-optimizer-offload-hzuls-slice-job-0-0.mt-11-optimizer-offload-hzuls:8482 I0422 22:06:38.810470 135125265119040 max_utils.py:284] Jax distributed system initialized! I0422 22:06:45.422882 135125265119040 max_utils.py:800] System Information: Jax Version: 0.9.2 I0422 22:06:45.422987 135125265119040 max_utils.py:801] System Information: Jaxlib Version: 0.9.2 I0422 22:06:45.423027 135125265119040 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 I0422 22:06:45.423062 135125265119040 train_utils.py:361] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing. I0422 22:06:46.121821 135125265119040 maxtext_utils.py:1565] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1) I0422 22:06:46.122117 135125265119040 checkpointing.py:677] Setting up checkpoint logger... I0422 22:06:46.122172 135125265119040 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True I0422 22:06:46.122217 135125265119040 pytree_checkpoint_handler.py:592] save_device_host_concurrent_bytes=None I0422 22:06:46.122565 135125265119040 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 0x7ae495c7de50>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB) I0422 22:06:49.047062 135125265119040 checkpointing.py:265] Enabling policy for fixed interval checkpointing. I0422 22:06:49.047327 135125265119040 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 0x7ad201b27950>}, handler_registry=None I0422 22:06:49.047571 135125265119040 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ad201b27950>` 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`. I0422 22:06:49.047620 135125265119040 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ad201b297f0>` 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`. I0422 22:06:49.047657 135125265119040 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 0x7ad201b27950>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7ad201b27950>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ad201b297f0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7ad201b297f0>}). I0422 22:06:49.047984 135125265119040 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.34 I0422 22:06:49.048056 135125265119040 async_checkpointer.py:192] [process=6][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7ad200feb420> timeout: 1200 secs and primary_host=0 for async checkpoint writes I0422 22:06:50.818998 135125265119040 checkpoint_manager.py:1812] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_11_optimizer_offload_true/checkpoints I0422 22:06:50.842408 135125265119040 checkpoint_manager.py:929] [process=6][thread=MainThread] CheckpointManager created, primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=True, async_options=None, multiprocessing_options=MultiprocessingOptions(primary_host=0, active_processes=None, barrier_sync_key_prefix=None), should_save_fn=None, file_options=FileOptions(path_permission_mode=None), save_root_metadata=True, temporary_path_class=None, save_decision_policy=FixedIntervalPolicy(interval=10), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False, lightweight_initialize=False), root_directory=gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_11_optimizer_offload_true/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7ad201b25fa0> I0422 22:06:50.842546 135125265119040 checkpointing.py:301] Checkpoint manager created! I0422 22:06:51.778682 135125265119040 nnx_wrappers.py:453] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed'). I0422 22:06:51.778805 135125265119040 nnx_wrappers.py:453] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 22:06:52.160436 135125265119040 attentions.py:1088] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0422 22:06:52.160530 135125265119040 attentions.py:1088] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 22:06:52.177234 135125265119040 attentions.py:1089] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed'). I0422 22:06:52.177301 135125265119040 attentions.py:1089] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None). I0422 22:06:52.201180 135125265119040 attentions.py:1154] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 22:06:52.201249 135125265119040 attentions.py:1154] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 22:06:52.218055 135125265119040 attentions.py:1155] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 22:06:52.218142 135125265119040 attentions.py:1155] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 22:06:52.234699 135125265119040 attentions.py:1156] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim'). I0422 22:06:52.234758 135125265119040 attentions.py:1156] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 22:06:52.259763 135125265119040 attentions.py:1198] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv'). I0422 22:06:52.259843 135125265119040 attentions.py:1198] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None). I0422 22:06:52.281192 135125265119040 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp'). I0422 22:06:52.281261 135125265119040 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None). I0422 22:06:52.494989 135125265119040 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint I0422 22:06:52.495127 135125265119040 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint. fsdp: 32 I0422 22:06:54.145451 135125265119040 maxtext_utils.py:1668] params/params/decoder/decoder_norm/scale Shape: float32[2048] Logical: P('norm',) Physical: (None,) I0422 22:06:54.145580 135125265119040 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) I0422 22:06:54.145634 135125265119040 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) I0422 22:06:54.145692 135125265119040 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') I0422 22:06:54.145745 135125265119040 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) I0422 22:06:54.145784 135125265119040 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) I0422 22:06:54.145835 135125265119040 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) I0422 22:06:54.145886 135125265119040 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') I0422 22:06:54.145926 135125265119040 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) I0422 22:06:54.145964 135125265119040 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) I0422 22:06:54.146013 135125265119040 maxtext_utils.py:1668] params/params/decoder/logits_dense/kernel Shape: float32[2048,32000] Logical: P('embed_vocab', 'vocab') Physical: ('fsdp', None) I0422 22:06:54.146059 135125265119040 maxtext_utils.py:1668] params/params/token_embedder/embedding Shape: float32[32000,2048] Logical: P('vocab', 'embed_vocab') Physical: (None, 'fsdp') I0422 22:06:54.646841 135125265119040 train.py:155] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0422 22:06:54.646936 135125265119040 train.py:155] train/xent Physical: float32[32,2048]............................................ ('fsdp', None). I0422 22:06:54.662425 135125265119040 train.py:162] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length'). I0422 22:06:54.662483 135125265119040 train.py:162] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None). I0422 22:07:05.447960 135125265119040 max_utils.py:791] Total memory size: 1.3 GB, Output size: 0.1 GB, Temp size: 1.1 GB, Argument size: 0.1 GB, Host temp size: 0.0 GB. I0422 22:07:05.448804 135125265119040 metric_logger.py:301] number parameters: 1.104 billion I0422 22:07:17.171070 135125265119040 checkpointing.py:772] Waiting for step 0 to finish before checkpoint... I0422 22:07:17.340019 135125265119040 checkpointing.py:776] Waited 0.1689302921295166 seconds for step 0 to finish before starting checkpointing. I0422 22:07:17.342782 135125265119040 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 22:07:17.344464 135125265119040 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 0 I0422 22:07:17.345844 135125265119040 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_11_optimizer_offload_true/checkpoints/0. I0422 22:07:18.107462 135125265119040 signaling_client.py:364] Using JaxDistributedSignalingClient I0422 22:07:18.108418 135125265119040 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0422 22:07:18.108475 135125265119040 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 I0422 22:07:18.385073 135125265119040 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.277683s I0422 22:07:18.385260 135125265119040 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 5.432 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.283982515335083 s) (per-host) I0422 22:07:18.385315 135125265119040 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.284047s (batch_requests_ready=0.002228s, total_serialization_initiated=0.281747s, others=0.000072s) I0422 22:07:18.385419 135125265119040 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.288088s (all_items=0.000017s, per_item={'items': '0.00001693'}, temp_paths=0.288071) I0422 22:07:18.386266 135125265119040 event_tracking.py:125] [process=6] [async] Finished blocking save in 1.04 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_11_optimizer_offload_true/checkpoints/0. I0422 22:07:18.386548 134991090546432 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:27:18.386515 I0422 22:07:18.388566 135125265119040 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize I0422 22:07:18.388846 134990687893248 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0422 22:07:18.388998 135125265119040 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_11_optimizer_offload_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776895637.3427627, 'wait_for_prev_duration_secs': 6.318092346191406e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776895637.344505, 'checkpointer_blocking_duration_secs': 1.0421898365020752, 'get_old_steps_start_time': 1776895638.3867218, 'get_old_steps_duration_secs': 2.956390380859375e-05, 'checkpoint_manager_blocking_start_time': 1776895637.3406038, 'checkpoint_manager_blocking_duration_secs': 1.0483558177947998} I0422 22:07:18.389128 135125265119040 checkpointing.py:408] Started an asynchronous checkpoint save for step 0 I0422 22:07:18.389180 135125265119040 max_utils.py:750] Memstats: After params initialized: I0422 22:07:18.389229 135125265119040 max_utils.py:756] Using (GB) 0.17 / 31.25 (0.544000%) on TPU_24(process=6,(0,6,0,0)) I0422 22:07:18.389265 135125265119040 max_utils.py:756] Using (GB) 0.17 / 31.25 (0.544000%) on TPU_25(process=6,(1,6,0,0)) I0422 22:07:18.389292 135125265119040 max_utils.py:756] Using (GB) 0.17 / 31.25 (0.544000%) on TPU_28(process=6,(0,7,0,0)) I0422 22:07:18.389318 135125265119040 max_utils.py:756] Using (GB) 0.17 / 31.25 (0.544000%) on TPU_29(process=6,(1,7,0,0)) I0422 22:07:18.703782 135125265119040 metric_logger.py:196] completed step: 0, seconds: 11.722, TFLOP/s/device: 1.159, Tokens/s/device: 174.712, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0422 22:07:18.885351 135125265119040 metric_logger.py:196] completed step: 1, seconds: 1.531, TFLOP/s/device: 8.874, Tokens/s/device: 1337.600, total_weights: 65536, loss: 10.874, lm_loss: 10.874, perplexity: 52779.875 I0422 22:07:19.299392 135125265119040 metric_logger.py:196] completed step: 2, seconds: 0.019, TFLOP/s/device: 709.325, Tokens/s/device: 106917.254, total_weights: 65536, loss: 10.262, lm_loss: 10.262, perplexity: 28637.129 I0422 22:07:19.462176 135125265119040 metric_logger.py:196] completed step: 3, seconds: 0.414, TFLOP/s/device: 32.833, Tokens/s/device: 4948.964, total_weights: 65536, loss: 9.734, lm_loss: 9.734, perplexity: 16889.047 I0422 22:07:19.788579 135125265119040 metric_logger.py:196] completed step: 4, seconds: 0.169, TFLOP/s/device: 80.553, Tokens/s/device: 12141.765, total_weights: 65536, loss: 9.278, lm_loss: 9.278, perplexity: 10694.968 I0422 22:07:19.794378 135125265119040 metric_logger.py:196] completed step: 5, seconds: 0.163, TFLOP/s/device: 83.440, Tokens/s/device: 12576.994, total_weights: 65536, loss: 8.892, lm_loss: 8.892, perplexity: 7270.520 I0422 22:07:21.503779 2784 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com I0422 22:07:23.484245 134991040190208 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_11_optimizer_offload_true/checkpoints/0/items/array_metadatas/process_6 I0422 22:07:41.915838 135125265119040 metric_logger.py:196] completed step: 6, seconds: 0.327, TFLOP/s/device: 41.584, Tokens/s/device: 6268.019, total_weights: 65536, loss: 8.592, lm_loss: 8.592, perplexity: 5390.688 I0422 22:07:42.078686 135125265119040 metric_logger.py:196] completed step: 7, seconds: 21.959, TFLOP/s/device: 0.619, Tokens/s/device: 93.264, total_weights: 65536, loss: 8.384, lm_loss: 8.384, perplexity: 4377.010 I0422 22:07:42.241207 135125265119040 metric_logger.py:196] completed step: 8, seconds: 0.168, TFLOP/s/device: 80.886, Tokens/s/device: 12192.000, total_weights: 65536, loss: 8.255, lm_loss: 8.255, perplexity: 3845.943 I0422 22:07:42.403466 135125265119040 checkpointing.py:772] Waiting for step 9 to finish before checkpoint... I0422 22:07:42.404168 135125265119040 checkpointing.py:776] Waited 0.0007243156433105469 seconds for step 9 to finish before starting checkpointing. I0422 22:07:42.406321 135125265119040 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 22:07:55.878917 134991090546432 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 41.811 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 37.777602672576904 s) (per-host) I0422 22:07:55.879046 134991090546432 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 37.492387s. I0422 22:08:03.812993 134991090546432 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 45.426316s. I0422 22:08:03.813317 134990687893248 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 22:08:03.813442 134990687893248 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0422 22:08:03.813499 134990687893248 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts... I0422 22:08:03.815773 134990687893248 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts. I0422 22:08:03.815957 135125265119040 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0. W0422 22:08:03.816113 135125265119040 checkpoint_manager.py:1452] Waiting for previous save to complete took 21.409776 seconds. If this number is high, consider checkpointing less frequently. I0422 22:08:03.818020 135125265119040 checkpoint_manager.py:1512] [process=6] Saving checkpoint at step 9 I0422 22:08:03.820048 135125265119040 event_tracking.py:70] [process=6] [async] Started save checkpoint @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_11_optimizer_offload_true/checkpoints/9. I0422 22:08:04.523631 135125265119040 jax_array_handlers.py:360] Scheduling D2H of 39 prioritized jax.Array. I0422 22:08:04.523727 135125265119040 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 I0422 22:08:04.562172 135125265119040 base_pytree_checkpoint_handler.py:154] [process=6][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.039505s I0422 22:08:04.562335 135125265119040 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/blocking_gbytes_per_sec: 35.974 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.04287910461425781 s) (per-host) I0422 22:08:04.562384 135125265119040 base_pytree_checkpoint_handler.py:768] [process=6][thread=MainThread] Initiated Pytree async_save. Time taken: 0.042938s (batch_requests_ready=0.001797s, total_serialization_initiated=0.041075s, others=0.000065s) I0422 22:08:04.562471 135125265119040 composite_checkpoint_handler.py:715] [process=6][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.046898s (all_items=0.000016s, per_item={'items': '0.00001574'}, temp_paths=0.046882) I0422 22:08:04.563203 135125265119040 event_tracking.py:125] [process=6] [async] Finished blocking save in 0.75 seconds. Continuing save @ gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_11_optimizer_offload_true/checkpoints/9. I0422 22:08:04.563518 134990687893248 async_checkpointer.py:76] [process=6][thread=async_save] Background save thread started. Deadline for this save operation is 2026-04-22 22:28:04.563484 I0422 22:08:04.565534 135125265119040 checkpoint_manager.py:1560] [process=6][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize I0422 22:08:04.565776 134990151022336 async_checkpointer.py:280] [process=6][thread=save_finalize] Waiting for background save thread=async_save. I0422 22:08:04.565901 135125265119040 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_11_optimizer_offload_true/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776895662.4062886, 'wait_for_prev_duration_secs': 21.409775733947754, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776895683.8180587, 'checkpointer_blocking_duration_secs': 0.7456018924713135, 'get_old_steps_start_time': 1776895684.563685, 'get_old_steps_duration_secs': 3.147125244140625e-05, 'checkpoint_manager_blocking_start_time': 1776895662.404415, 'checkpoint_manager_blocking_duration_secs': 22.161450386047363} I0422 22:08:04.566010 135125265119040 checkpointing.py:408] Started an asynchronous checkpoint save for step 9 I0422 22:08:04.566056 135125265119040 checkpoint_manager.py:2020] [process=6][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete. I0422 22:08:09.697480 134991040190208 array_metadata_store.py:203] [process=6][thread=array_type_handler] Wrote 39 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260422_212603/linen_xpk_test_pipeline_scan_nnx_20260422_212603_11_optimizer_offload_true/checkpoints/9/items/array_metadatas/process_6 I0422 22:08:46.679862 134990687893248 base_pytree_checkpoint_handler.py:130] [process=6] /jax/orbax/write/gbytes_per_sec: 37.465 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 42.16036558151245 s) (per-host) I0422 22:08:46.679997 134990687893248 async_checkpointer.py:90] [process=6][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.116367s. I0422 22:08:55.423032 134990687893248 async_checkpointer.py:160] [process=6][thread=async_save] Background save thread done. Time taken: 50.859389s. I0422 22:08:55.423333 134990151022336 async_checkpointer.py:288] [process=6][thread=save_finalize] Done with waiting for background save thread=async_save. I0422 22:08:55.423454 134990151022336 async_checkpointer.py:298] [process=6][thread=save_finalize] No errors found in background save thread=async_save. I0422 22:08:55.423501 134990151022336 checkpoint_manager.py:2137] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts... I0422 22:08:55.425221 134990151022336 checkpoint_manager.py:2146] [process=6][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts. I0422 22:08:55.425409 135125265119040 checkpoint_manager.py:2032] [process=6][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9. I0422 22:08:55.425561 135125265119040 checkpoint_manager.py:2009] [process=6][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning. I0422 22:08:55.426521 135125265119040 metric_logger.py:196] completed step: 9, seconds: 0.163, TFLOP/s/device: 83.583, Tokens/s/device: 12598.503, total_weights: 65536, loss: 8.179, lm_loss: 8.179, perplexity: 3564.739 Per train step: Total TFLOPs: 13.59 split as 93.93% learnable weight flops and 6.07% attention flops XPK End: Wed Apr 22 22:09:08 UTC 2026 EXIT_CODE=0