NNX vs Linen: 13_scan_layers_false

Metric	Linen `574ad3fb9`	NNX `574ad3fb9`	Diff (NNX − Linen)
Parameters	1.104 billion	—	—
Final loss	8.1880	—	—
TFLOP/s	91.710	—	—
Tok/s	13823.5	—	—
Avg s/step	2.928	—	—
Memory %	2.62	—	—
JAX	0.8.1	0.8.1	—

Field	Linen	NNX
JAX	0.8.1	0.8.1
Jaxlib	0.8.1	0.8.1
Hardware	PJRT C API / TFRT TPU v6 lite	PJRT C API / TFRT TPU v6 lite
Devices	32	—

Field	Linen	NNX
Total	1.8 GB	—
Output	0.4 GB	—
Temp	1.4 GB	—
Argument	0.4 GB	—

Device	Used (GB)	Total (GB)	%
TPU_10(process=3,(2,2,0,0))	0.82	31.25	2.6%
TPU_11(process=3,(3,2,0,0))	0.82	31.25	2.6%
TPU_14(process=3,(2,3,0,0))	0.82	31.25	2.6%
TPU_15(process=3,(3,3,0,0))	0.82	31.25	2.6%

Step	Linen Loss	NNX Loss	Loss Δ	Linen TFLOP/s	NNX TFLOP/s	TFLOP/s Δ
0	10.877	—	—	0.221	—	—
1	10.877	—	—	5.623	—	—
2	10.268	—	—	673.965	—	—
3	9.741	—	—	30.547	—	—
4	9.285	—	—	95.245	—	—
5	8.900	—	—	98.975	—	—
6	8.602	—	—	48.800	—	—
7	8.393	—	—	0.600	—	—
8	8.264	—	—	116.578	—	—
9	8.188	—	—	91.710	—	—

Linen · 574ad3fb9 · test_pipeline_scan_nnx_20260419_085454 · full log

XPK Start: Sun Apr 19 09:38:20 UTC 2026
2026-04-19 09:38:24.404625: E external/local_xla/xla/stream_executor/cuda/cuda_fft.cc:467] Unable to register cuFFT factory: Attempting to register factory for plugin cuFFT when one has already been registered
WARNING: All log messages before absl::InitializeLog() is called are written to STDERR
E0000 00:00:1776591504.417004      10 cuda_dnn.cc:8579] Unable to register cuDNN factory: Attempting to register factory for plugin cuDNN when one has already been registered
E0000 00:00:1776591504.420790      10 cuda_blas.cc:1407] Unable to register cuBLAS factory: Attempting to register factory for plugin cuBLAS when one has already been registered
W0000 00:00:1776591504.431824      10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1776591504.431948      10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1776591504.431951      10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1776591504.431953      10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
2026-04-19 09:38:43.676000: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303)
I0419 09:38:44.182941 135856898008896 max_utils.py:273] Attempting to initialize the jax distributed system...
INFO:2026-04-19 09:38:53,221:jax._src.distributed:140: Starting JAX distributed service on [::]:8482
I0419 09:38:53.221732 135856898008896 distributed.py:140] Starting JAX distributed service on [::]:8482
INFO:2026-04-19 09:38:53,224:jax._src.distributed:157: Connecting to JAX distributed service on mt-13-scan-layers-false-enbyd-slice-job-0-0.mt-13-scan-layers-false-enbyd:8482
I0419 09:38:53.224110 135856898008896 distributed.py:157] Connecting to JAX distributed service on mt-13-scan-layers-false-enbyd-slice-job-0-0.mt-13-scan-layers-false-enbyd:8482
I0419 09:38:54.358783 135856898008896 max_utils.py:284] Jax distributed system initialized!
I0419 09:39:00.988522 135856898008896 max_utils.py:800] System Information: Jax Version: 0.8.1
I0419 09:39:00.988626 135856898008896 max_utils.py:801] System Information: Jaxlib Version: 0.8.1
I0419 09:39:00.988666 135856898008896 max_utils.py:802] System Information: Jax Backend: PJRT C API
TFRT TPU v6 lite
Built on Nov 12 2025 14:16:36 (1762985796) cl/831091709
I0419 09:39:00.988699 135856898008896 train_utils.py:347] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
I0419 09:39:01.602810 135856898008896 maxtext_utils.py:1398] Num_devices: 32, shape (1, 1, 1, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1)
I0419 09:39:01.603103 135856898008896 checkpointing.py:677] Setting up checkpoint logger...
I0419 09:39:01.603158 135856898008896 checkpointing.py:233] Creating checkpoint manager with ocdbt=True and zarr3=True
I0419 09:39:01.603202 135856898008896 pytree_checkpoint_handler.py:589] save_device_host_concurrent_bytes=None
I0419 09:39:01.603569 135856898008896 base_pytree_checkpoint_handler.py:415] 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 0x7b8f249a2ba0>, enable_pinned_host_transfer=False, save_concurrent_bytes: 96000000000 (89.4 GiB), restore_concurrent_bytes: 96000000000 (89.4 GiB)
I0419 09:39:04.540147 135856898008896 checkpointing.py:265] Enabling policy for fixed interval checkpointing.
I0419 09:39:04.540344 135856898008896 checkpoint_manager.py:709] [process=3][thread=MainThread] CheckpointManager init: checkpointers=None, item_names=('items',), item_handlers={'items': <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b8ddc6cd4c0>}, handler_registry=None
I0419 09:39:04.540571 135856898008896 composite_checkpoint_handler.py:237] Deferred registration for item: "items". Adding handler `<orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b8ddc6cd4c0>` for item "items" and save args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>` to `_handler_registry`.
I0419 09:39:04.540619 135856898008896 composite_checkpoint_handler.py:237] Deferred registration for item: "metrics". Adding handler `<orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b7b0c383380>` for item "metrics" and save args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>` and restore args `<class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>` to `_handler_registry`.
I0419 09:39:04.540655 135856898008896 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 0x7b8ddc6cd4c0>, ('items', <class 'orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeRestoreArgs'>): <orbax.checkpoint._src.handlers.pytree_checkpoint_handler.PyTreeCheckpointHandler object at 0x7b8ddc6cd4c0>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonSaveArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b7b0c383380>, ('metrics', <class 'orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonRestoreArgs'>): <orbax.checkpoint._src.handlers.json_checkpoint_handler.JsonCheckpointHandler object at 0x7b7b0c383380>}).
I0419 09:39:04.541171 135856898008896 abstract_checkpointer.py:35] orbax-checkpoint version: 0.11.33
I0419 09:39:04.541259 135856898008896 async_checkpointer.py:177] [process=3][thread=MainThread] Using barrier_sync_fn: <function get_barrier_sync_fn.<locals>._fn at 0x7b7a7c174040> timeout: 600 secs and primary_host=0 for async checkpoint writes
I0419 09:39:05.644007 135856898008896 checkpoint_manager.py:1818] Found 0 checkpoint steps in gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260419_085454/linen_xpk_test_pipeline_scan_nnx_20260419_085454_13_scan_layers_false/checkpoints
I0419 09:39:05.651482 135856898008896 checkpoint_manager.py:929] [process=3][thread=MainThread] CheckpointManager created,  primary_host=0, CheckpointManagerOptions=CheckpointManagerOptions(save_interval_steps=1, max_to_keep=None, keep_time_interval=None, keep_period=None, should_keep_fn=None, best_fn=None, best_mode='max', keep_checkpoints_without_metrics=True, step_prefix=None, step_format_fixed_length=None, step_name_format=None, create=True, cleanup_tmp_directories=False, save_on_steps=frozenset(), single_host_load_and_broadcast=False, todelete_subdir=None, todelete_full_path=None, enable_background_delete=False, read_only=False, enable_async_checkpointing=True, async_options=None, multiprocessing_options=MultiprocessingOptions(primary_host=0, active_processes=None, barrier_sync_key_prefix=None), should_save_fn=None, file_options=FileOptions(path_permission_mode=None), save_root_metadata=True, temporary_path_class=None, save_decision_policy=FixedIntervalPolicy(interval=10), preservation_policy=LatestN(n=None), prevent_write_metrics=False, enable_should_save_is_saving_in_progress_check=True, enable_per_process_directory_creation=False, lightweight_initialize=False), root_directory=gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260419_085454/linen_xpk_test_pipeline_scan_nnx_20260419_085454_13_scan_layers_false/checkpoints: <orbax.checkpoint.checkpoint_manager.CheckpointManager object at 0x7b7b0c37e930>
I0419 09:39:05.651598 135856898008896 checkpointing.py:301] Checkpoint manager created!
I0419 09:39:06.580175 135856898008896 nnx_wrappers.py:453] Unknown Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_norm_length', 'activation_embed').
I0419 09:39:06.580343 135856898008896 nnx_wrappers.py:453] Unknown Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0419 09:39:07.412655 135856898008896 attentions.py:1084] attentions/inputs_q Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0419 09:39:07.412778 135856898008896 attentions.py:1084] attentions/inputs_q Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0419 09:39:07.428514 135856898008896 attentions.py:1085] attentions/inputs_kv Logical: bfloat16[32,2048,2048]...................................... ('activation_batch', 'activation_attn_length', 'activation_attn_embed').
I0419 09:39:07.428602 135856898008896 attentions.py:1085] attentions/inputs_kv Physical: bfloat16[32,2048,2048]...................................... ('fsdp', None, None).
I0419 09:39:07.454356 135856898008896 attentions.py:1150] attentions/query Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0419 09:39:07.454544 135856898008896 attentions.py:1150] attentions/query Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0419 09:39:07.470610 135856898008896 attentions.py:1151] attentions/key Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0419 09:39:07.470703 135856898008896 attentions.py:1151] attentions/key Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0419 09:39:07.486618 135856898008896 attentions.py:1152] attentions/value Logical: bfloat16[32,2048,16,128].................................... ('activation_kv_batch', 'activation_attn_length', 'activation_kv_heads', 'activation_kv_head_dim').
I0419 09:39:07.486706 135856898008896 attentions.py:1152] attentions/value Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0419 09:39:07.512147 135856898008896 attentions.py:1193] attentions/out Logical: bfloat16[32,2048,16,128].................................... ('activation_batch', 'activation_attn_length', 'activation_heads', 'activation_kv').
I0419 09:39:07.512269 135856898008896 attentions.py:1193] attentions/out Physical: bfloat16[32,2048,16,128].................................... ('fsdp', None, None, None).
I0419 09:39:07.534160 135856898008896 linears.py:525] linears/x Logical: bfloat16[32,2048,7168]...................................... ('activation_batch', 'activation_length', 'activation_mlp').
I0419 09:39:07.534274 135856898008896 linears.py:525] linears/x Physical: bfloat16[32,2048,7168]...................................... ('fsdp', None, None).
I0419 09:39:10.599483 135856898008896 checkpointing.py:577] checkpoint manager exists so trying to load this run's existing checkpoint
I0419 09:39:10.599617 135856898008896 checkpointing.py:665] No existing checkpoints found, not restoring checkpoint.
fsdp: 32
I0419 09:39:19.391114 135856898008896 maxtext_utils.py:1501]  params/params/decoder/decoder_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.391267 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_0/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.391322 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_0/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.391379 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_0/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.391418 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_0/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.391453 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_0/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.391502 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_0/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.391551 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_0/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.391589 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_0/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.391623 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_0/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.391657 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_1/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.391690 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_1/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.391723 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_1/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.391756 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_1/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.391787 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_1/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.391819 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_1/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.391858 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_1/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.391891 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_1/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.391922 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_1/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.391954 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_10/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.391985 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_10/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.392015 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_10/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.392043 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_10/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.392071 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_10/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.392101 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_10/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.392132 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_10/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.392162 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_10/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.392192 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_10/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.392221 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_11/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.392262 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_11/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.392293 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_11/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.392321 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_11/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.392348 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_11/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.392380 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_11/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.392429 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_11/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.392477 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_11/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.392519 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_11/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.392550 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_12/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.392580 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_12/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.392611 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_12/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.392640 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_12/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.392668 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_12/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.392697 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_12/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.392726 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_12/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.392755 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_12/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.392783 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_12/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.392812 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_13/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.392845 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_13/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.392875 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_13/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.392902 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_13/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.392929 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_13/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.392958 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_13/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.392987 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_13/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.393015 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_13/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.393043 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_13/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.393072 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_14/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.393100 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_14/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.393129 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_14/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.393156 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_14/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.393182 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_14/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.393211 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_14/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.393268 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_14/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.393305 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_14/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.393336 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_14/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.393365 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_15/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.393394 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_15/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.393424 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_15/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.393451 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_15/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.393478 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_15/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.393507 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_15/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.393536 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_15/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.393564 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_15/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.393593 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_15/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.393621 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_2/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.393650 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_2/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.393678 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_2/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.393706 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_2/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.393732 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_2/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.393762 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_2/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.393791 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_2/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.393821 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_2/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.393854 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_2/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.393883 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_3/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.393912 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_3/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.393940 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_3/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.393967 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_3/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.393994 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_3/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.394022 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_3/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.394050 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_3/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.394079 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_3/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.394108 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_3/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.394137 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_4/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.394165 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_4/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.394193 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_4/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.394220 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_4/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.394257 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_4/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.394287 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_4/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.394315 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_4/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.394345 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_4/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.394373 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_4/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.394401 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_5/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.394430 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_5/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.394459 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_5/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.394486 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_5/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.394513 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_5/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.394541 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_5/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.394570 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_5/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.394598 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_5/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.394627 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_5/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.394655 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_6/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.394683 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_6/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.394711 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_6/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.394738 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_6/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.394764 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_6/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.394793 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_6/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.394821 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_6/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.394853 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_6/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.394882 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_6/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.394910 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_7/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.394939 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_7/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.394967 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_7/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.394994 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_7/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.395021 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_7/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.395049 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_7/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.395077 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_7/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.395106 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_7/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.395134 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_7/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.395163 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_8/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.395192 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_8/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.395220 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_8/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.395259 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_8/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.395287 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_8/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.395315 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_8/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.395343 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_8/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.395371 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_8/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.395399 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_8/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.395427 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_9/mlp/wi_0/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.395456 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_9/mlp/wi_1/kernel
    Shape:     float32[2048,7168]
    Logical:   PartitionSpec('embed', 'mlp')
    Physical:  ('fsdp', None)
I0419 09:39:19.395483 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_9/mlp/wo/kernel
    Shape:     float32[7168,2048]
    Logical:   PartitionSpec('mlp', 'embed')
    Physical:  (None, 'fsdp')
I0419 09:39:19.395510 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_9/post_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.395536 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_9/pre_self_attention_layer_norm/scale
    Shape:     float32[2048]
    Logical:   PartitionSpec('norm',)
    Physical:  (None,)
I0419 09:39:19.395565 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_9/self_attention/key/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.395593 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_9/self_attention/out/kernel
    Shape:     float32[16,128,2048]
    Logical:   PartitionSpec('heads', 'kv', 'embed')
    Physical:  (None, None, 'fsdp')
I0419 09:39:19.395621 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_9/self_attention/query/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'q_heads', 'kv')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.395649 135856898008896 maxtext_utils.py:1501]  params/params/decoder/layers_9/self_attention/value/kernel
    Shape:     float32[2048,16,128]
    Logical:   PartitionSpec('embed', 'kv_heads', 'kv_head_dim')
    Physical:  ('fsdp', None, None)
I0419 09:39:19.395697 135856898008896 maxtext_utils.py:1501]  params/params/decoder/logits_dense/kernel
    Shape:     float32[2048,32000]
    Logical:   PartitionSpec('embed', 'vocab')
    Physical:  ('fsdp', None)
I0419 09:39:19.395741 135856898008896 maxtext_utils.py:1501]  params/params/token_embedder/embedding
    Shape:     float32[32000,2048]
    Logical:   PartitionSpec('vocab', 'embed')
    Physical:  (None, 'fsdp')

I0419 09:39:23.147619 135856898008896 train.py:156] train/xent Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0419 09:39:23.147712 135856898008896 train.py:156] train/xent Physical: float32[32,2048]............................................ ('fsdp', None).
I0419 09:39:23.162736 135856898008896 train.py:163] train/z_loss Logical: float32[32,2048]............................................ ('activation_embed_and_logits_batch', 'activation_length').
I0419 09:39:23.162798 135856898008896 train.py:163] train/z_loss Physical: float32[32,2048]............................................ ('fsdp', None).
I0419 09:40:19.688819 135856898008896 max_utils.py:791] Total memory size: 1.8 GB, Output size: 0.4 GB, Temp size: 1.4 GB, Argument size: 0.4 GB, Host temp size: 0.0 GB.
I0419 09:40:19.692264 135856898008896 metric_logger.py:289] number parameters: 1.104 billion
I0419 09:41:21.198108 135856898008896 checkpointing.py:772] Waiting for step 0 to finish before checkpoint...
I0419 09:41:21.485510 135856898008896 checkpointing.py:776] Waited 0.2873826026916504 seconds for step 0 to finish before starting checkpointing.
I0419 09:41:21.491747 135856898008896 checkpoint_manager.py:2013] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0419 09:41:21.493658 135856898008896 checkpoint_manager.py:1518] [process=3] Saving checkpoint at step 0
I0419 09:41:21.496425 135856898008896 async_checkpointer.py:452] [process=3] Started async saving checkpoint to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260419_085454/linen_xpk_test_pipeline_scan_nnx_20260419_085454_13_scan_layers_false/checkpoints/0.
I0419 09:41:22.543451 135856898008896 signaling_client.py:364] Using JaxDistributedSignalingClient
I0419 09:41:22.544656 135856898008896 jax_array_handlers.py:358] Scheduling D2H of 444 prioritized jax.Array.
I0419 09:41:22.544776 135856898008896 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0419 09:41:22.844924 135856898008896 base_pytree_checkpoint_handler.py:153] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.301971s
I0419 09:41:22.845085 135856898008896 base_pytree_checkpoint_handler.py:129] [process=3] /jax/checkpoint/write/blocking_gbytes_per_sec: 2.604 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.5924656391143799 s) (per-host)
I0419 09:41:22.845135 135856898008896 base_pytree_checkpoint_handler.py:737] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.592525s (batch_requests_ready=0.271750s, total_serialization_initiated=0.320708s, others=0.000067s)
I0419 09:41:22.845425 135856898008896 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.597258s (all_items=0.000020s, per_item={'items': '0.00001979'}, temp_paths=0.597238)
I0419 09:41:22.846406 135736217016064 async_checkpointer.py:79] [process=3][thread=async_save] Background save thread started.
I0419 09:41:22.846575 135856898008896 async_checkpointer.py:561] Finished blocking save. Time taken: 1.352847s. Continuing background save to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260419_085454/linen_xpk_test_pipeline_scan_nnx_20260419_085454_13_scan_layers_false/checkpoints/0.
I0419 09:41:23.308428 135856898008896 checkpoint_manager.py:1566] [process=3][thread=MainThread][step=0] Starting CheckpointManager Save Finalize thread=save_finalize
I0419 09:41:23.308821 135731435534080 async_checkpointer.py:265] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0419 09:41:23.309002 135856898008896 standard_logger.py:34] {'step': 0, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260419_085454/linen_xpk_test_pipeline_scan_nnx_20260419_085454_13_scan_layers_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776591681.4917293, 'wait_for_prev_duration_secs': 6.628036499023438e-05, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776591681.4936957, 'checkpointer_blocking_duration_secs': 1.3529853820800781, 'get_old_steps_start_time': 1776591682.8467011, 'get_old_steps_duration_secs': 2.574920654296875e-05, 'checkpoint_manager_blocking_start_time': 1776591681.488987, 'checkpoint_manager_blocking_duration_secs': 1.819972038269043}
I0419 09:41:23.309200 135856898008896 checkpointing.py:408] Started an asynchronous checkpoint save for step 0
I0419 09:41:23.309265 135856898008896 max_utils.py:750] 
Memstats: After params initialized:
I0419 09:41:23.309321 135856898008896 max_utils.py:756] 	Using (GB) 0.82 / 31.25 (2.624000%) on TPU_10(process=3,(2,2,0,0))
I0419 09:41:23.309354 135856898008896 max_utils.py:756] 	Using (GB) 0.82 / 31.25 (2.624000%) on TPU_11(process=3,(3,2,0,0))
I0419 09:41:23.309381 135856898008896 max_utils.py:756] 	Using (GB) 0.82 / 31.25 (2.624000%) on TPU_14(process=3,(2,3,0,0))
I0419 09:41:23.309405 135856898008896 max_utils.py:756] 	Using (GB) 0.82 / 31.25 (2.624000%) on TPU_15(process=3,(3,3,0,0))
I0419 09:41:23.626764 135856898008896 metric_logger.py:185] completed step: 0, seconds: 61.506, TFLOP/s/device: 0.221, Tokens/s/device: 33.298, total_weights: 65536, loss: 10.877
I0419 09:41:23.763295 135856898008896 metric_logger.py:185] completed step: 1, seconds: 2.417, TFLOP/s/device: 5.623, Tokens/s/device: 847.492, total_weights: 65536, loss: 10.877
I0419 09:41:24.214971 135856898008896 metric_logger.py:185] completed step: 2, seconds: 0.020, TFLOP/s/device: 673.965, Tokens/s/device: 101587.302, total_weights: 65536, loss: 10.268
I0419 09:41:24.351527 135856898008896 metric_logger.py:185] completed step: 3, seconds: 0.445, TFLOP/s/device: 30.547, Tokens/s/device: 4604.348, total_weights: 65536, loss: 9.741
I0419 09:41:24.629149 135856898008896 metric_logger.py:185] completed step: 4, seconds: 0.143, TFLOP/s/device: 95.245, Tokens/s/device: 14356.415, total_weights: 65536, loss: 9.285
I0419 09:41:24.642124 135856898008896 metric_logger.py:185] completed step: 5, seconds: 0.137, TFLOP/s/device: 98.975, Tokens/s/device: 14918.524, total_weights: 65536, loss: 8.900
I0419 09:41:47.272903    2658 google_auth_provider.cc:181] Running on GCE, using service account 562977990677-compute@developer.gserviceaccount.com
I0419 09:41:47.390178 135856898008896 metric_logger.py:185] completed step: 6, seconds: 0.278, TFLOP/s/device: 48.800, Tokens/s/device: 7355.635, total_weights: 65536, loss: 8.602
I0419 09:41:47.537139 135856898008896 metric_logger.py:185] completed step: 7, seconds: 22.644, TFLOP/s/device: 0.600, Tokens/s/device: 90.443, total_weights: 65536, loss: 8.393
I0419 09:41:47.675053 135856898008896 metric_logger.py:185] completed step: 8, seconds: 0.117, TFLOP/s/device: 116.578, Tokens/s/device: 17571.858, total_weights: 65536, loss: 8.264
I0419 09:41:47.811206 135856898008896 checkpointing.py:772] Waiting for step 9 to finish before checkpoint...
I0419 09:41:47.814733 135856898008896 checkpointing.py:776] Waited 0.0035474300384521484 seconds for step 9 to finish before starting checkpointing.
I0419 09:41:47.817631 135856898008896 checkpoint_manager.py:2024] [process=3][thread=MainThread][step=0][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0419 09:41:49.261856 135736225408768 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 444 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260419_085454/linen_xpk_test_pipeline_scan_nnx_20260419_085454_13_scan_layers_false/checkpoints/0/items/array_metadatas/process_3
I0419 09:42:17.327480 135736217016064 base_pytree_checkpoint_handler.py:129] [process=3] /jax/checkpoint/write/gbytes_per_sec: 28.681 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 55.07481598854065 s) (per-host)
I0419 09:42:17.327585 135736217016064 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 54.481069s.
I0419 09:42:26.102135 135736217016064 async_checkpointer.py:144] [process=3][thread=async_save] Background save thread done. Time taken: 63.255602s.
I0419 09:42:26.102438 135731435534080 async_checkpointer.py:273] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0419 09:42:26.102590 135731435534080 async_checkpointer.py:283] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0419 09:42:26.102650 135731435534080 checkpoint_manager.py:2133] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is syncing with other hosts...
I0419 09:42:26.104364 135731435534080 checkpoint_manager.py:2142] [process=3][thread=save_finalize][step=0] CheckpointManager Save Finalize is done on all hosts.
I0419 09:42:26.104544 135856898008896 checkpoint_manager.py:2036] [process=3][thread=MainThread][step=0][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=0.
W0419 09:42:26.104692 135856898008896 checkpoint_manager.py:1458] Waiting for previous save to complete took 38.287068 seconds. If this number is high, consider checkpointing less frequently.
I0419 09:42:26.106932 135856898008896 checkpoint_manager.py:1518] [process=3] Saving checkpoint at step 9
I0419 09:42:26.110350 135856898008896 async_checkpointer.py:452] [process=3] Started async saving checkpoint to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260419_085454/linen_xpk_test_pipeline_scan_nnx_20260419_085454_13_scan_layers_false/checkpoints/9.
I0419 09:42:26.659342 135856898008896 jax_array_handlers.py:358] Scheduling D2H of 444 prioritized jax.Array.
I0419 09:42:26.659500 135856898008896 replica_slices.py:424] Transferring arrays to host memory with options: use_replica_parallel=True, min_slice_bytes_for_replica_parallel=None, max_replicas_for_replica_parallel=None, enable_pinned_host_transfer=False
I0419 09:42:26.800338 135856898008896 base_pytree_checkpoint_handler.py:153] [process=3][thread=MainThread] Initiated "orbax.checkpoint._src.serialization.jax_array_handlers.ArrayHandler".serialize. Time taken: 0.142694s
I0419 09:42:26.800491 135856898008896 base_pytree_checkpoint_handler.py:129] [process=3] /jax/checkpoint/write/blocking_gbytes_per_sec: 3.713 GiB/s (total gbytes: 1.5 GiB) (time elapsed: 0.41549134254455566 s) (per-host)
I0419 09:42:26.800541 135856898008896 base_pytree_checkpoint_handler.py:737] [process=3][thread=MainThread] Initiated Pytree async_save. Time taken: 0.415550s (batch_requests_ready=0.255850s, total_serialization_initiated=0.159634s, others=0.000067s)
I0419 09:42:26.800824 135856898008896 composite_checkpoint_handler.py:715] [process=3][thread=MainThread] Initiated CompositeCheckpointHandler.async_save. Time taken: 0.419859s (all_items=0.000016s, per_item={'items': '0.00001621'}, temp_paths=0.419842)
I0419 09:42:26.801722 135733557839616 async_checkpointer.py:79] [process=3][thread=async_save] Background save thread started.
I0419 09:42:26.801900 135856898008896 async_checkpointer.py:561] Finished blocking save. Time taken: 0.694889s. Continuing background save to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260419_085454/linen_xpk_test_pipeline_scan_nnx_20260419_085454_13_scan_layers_false/checkpoints/9.
I0419 09:42:27.256590 135856898008896 checkpoint_manager.py:1566] [process=3][thread=MainThread][step=9] Starting CheckpointManager Save Finalize thread=save_finalize
I0419 09:42:27.256968 135731435534080 async_checkpointer.py:265] [process=3][thread=save_finalize] Waiting for background save thread=async_save.
I0419 09:42:27.257142 135856898008896 standard_logger.py:34] {'step': 9, 'event_type': 'save', 'directory': 'gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260419_085454/linen_xpk_test_pipeline_scan_nnx_20260419_085454_13_scan_layers_false/checkpoints', 'reached_preemption': False, 'preemption_received_at': None, 'synchronous': False, 'wait_for_prev_start_time': 1776591707.8176003, 'wait_for_prev_duration_secs': 38.287068367004395, 'time_between_consecutive_saves_sec': None, 'checkpointer_blocking_start_time': 1776591746.1069725, 'checkpointer_blocking_duration_secs': 0.6950387954711914, 'get_old_steps_start_time': 1776591746.8020303, 'get_old_steps_duration_secs': 2.5510787963867188e-05, 'checkpoint_manager_blocking_start_time': 1776591707.815617, 'checkpoint_manager_blocking_duration_secs': 39.441487550735474}
I0419 09:42:27.257365 135856898008896 checkpointing.py:408] Started an asynchronous checkpoint save for step 9
I0419 09:42:27.257413 135856898008896 checkpoint_manager.py:2024] [process=3][thread=MainThread][step=9][wait_until_finished] Waiting for Save Finalize thread (save_finalize) to complete.
I0419 09:42:33.296744 135736225408768 array_metadata_store.py:203] [process=3][thread=array_type_handler] Wrote 444 array_metadata.ArrayMetadata to gs://lance-maxtext/linen_ckpt_xpk_test_pipeline_scan_nnx_20260419_085454/linen_xpk_test_pipeline_scan_nnx_20260419_085454_13_scan_layers_false/checkpoints/9/items/array_metadatas/process_3
I0419 09:43:09.550030 135733557839616 base_pytree_checkpoint_handler.py:129] [process=3] /jax/checkpoint/write/gbytes_per_sec: 36.594 MiB/s (total gbytes: 1.5 GiB) (time elapsed: 43.164990186691284 s) (per-host)
I0419 09:43:09.550132 135733557839616 async_checkpointer.py:90] [process=3][thread=async_save] 3 Handler Commit operations completed. Time taken: 42.748294s.
I0419 09:43:18.995742 135733557839616 async_checkpointer.py:144] [process=3][thread=async_save] Background save thread done. Time taken: 52.193887s.
I0419 09:43:18.995964 135731435534080 async_checkpointer.py:273] [process=3][thread=save_finalize] Done with waiting for background save thread=async_save.
I0419 09:43:18.996027 135731435534080 async_checkpointer.py:283] [process=3][thread=save_finalize] No errors found in background save thread=async_save.
I0419 09:43:18.996092 135731435534080 checkpoint_manager.py:2133] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is syncing with other hosts...
I0419 09:43:18.997959 135731435534080 checkpoint_manager.py:2142] [process=3][thread=save_finalize][step=9] CheckpointManager Save Finalize is done on all hosts.
I0419 09:43:18.998151 135856898008896 checkpoint_manager.py:2036] [process=3][thread=MainThread][step=9][wait_until_finished] Done waiting for Save Finalize thread (save_finalize) running at step=9.
I0419 09:43:18.998313 135856898008896 checkpoint_manager.py:2013] [process=3][thread=MainThread][wait_until_finished] No Save Finalize thread to wait for. Returning.
I0419 09:43:18.998976 135856898008896 metric_logger.py:185] completed step: 9, seconds: 0.148, TFLOP/s/device: 91.710, Tokens/s/device: 13823.547, total_weights: 65536, loss: 8.188
Per train step:
 Total TFLOPs: 13.59 
 split as 93.93% learnable weight flops and 6.07% attention flops
XPK End: Sun Apr 19 09:43:30 UTC 2026
EXIT_CODE=0

NNX · 574ad3fb9 · test_pipeline_scan_nnx_20260419_085454 · full log

XPK Start: Sun Apr 19 11:44:18 UTC 2026
2026-04-19 11:44:22.620290: E external/local_xla/xla/stream_executor/cuda/cuda_fft.cc:467] Unable to register cuFFT factory: Attempting to register factory for plugin cuFFT when one has already been registered
WARNING: All log messages before absl::InitializeLog() is called are written to STDERR
E0000 00:00:1776599062.632903      10 cuda_dnn.cc:8579] Unable to register cuDNN factory: Attempting to register factory for plugin cuDNN when one has already been registered
E0000 00:00:1776599062.636564      10 cuda_blas.cc:1407] Unable to register cuBLAS factory: Attempting to register factory for plugin cuBLAS when one has already been registered
W0000 00:00:1776599062.647685      10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1776599062.647702      10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1776599062.647704      10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
W0000 00:00:1776599062.647707      10 computation_placer.cc:177] computation placer already registered. Please check linkage and avoid linking the same target more than once.
2026-04-19 11:44:41.927866: E external/local_xla/xla/stream_executor/cuda/cuda_platform.cc:51] failed call to cuInit: INTERNAL: CUDA error: Failed call to cuInit: UNKNOWN ERROR (303)
I0419 11:44:42.445060 135690700040000 max_utils.py:273] Attempting to initialize the jax distributed system...
INFO:2026-04-19 11:44:51,486:jax._src.distributed:140: Starting JAX distributed service on [::]:8482
I0419 11:44:51.486109 135690700040000 distributed.py:140] Starting JAX distributed service on [::]:8482
INFO:2026-04-19 11:44:51,488:jax._src.distributed:157: Connecting to JAX distributed service on mt-13-scan-layers-false-i000b-slice-job-0-0.mt-13-scan-layers-false-i000b:8482
I0419 11:44:51.488530 135690700040000 distributed.py:157] Connecting to JAX distributed service on mt-13-scan-layers-false-i000b-slice-job-0-0.mt-13-scan-layers-false-i000b:8482
I0419 11:44:52.524397 135690700040000 max_utils.py:284] Jax distributed system initialized!
I0419 11:44:59.447973 135690700040000 max_utils.py:800] System Information: Jax Version: 0.8.1
I0419 11:44:59.448081 135690700040000 max_utils.py:801] System Information: Jaxlib Version: 0.8.1
I0419 11:44:59.448125 135690700040000 max_utils.py:802] System Information: Jax Backend: PJRT C API
TFRT TPU v6 lite
Built on Nov 12 2025 14:16:36 (1762985796) cl/831091709
I0419 11:44:59.448159 135690700040000 train_utils.py:347] WARNING: Sequence packing is essentially ignored for synthetic data. Please use a real dataset to use sequence packing.
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/deps/src/maxtext/trainers/pre_train/train.py", line 727, in <module>
    app.run(main)
  File "/usr/local/lib/python3.12/site-packages/absl/app.py", line 316, in run
    _run_main(main, args)
  File "/usr/local/lib/python3.12/site-packages/absl/app.py", line 261, in _run_main
    sys.exit(main(argv))
             ^^^^^^^^^^
  File "/deps/src/maxtext/trainers/pre_train/train.py", line 723, in main
    train_func()
  File "/deps/src/maxtext/trainers/pre_train/train.py", line 713, in train_func
    run(config, recorder, diagnostic_config)
  File "/deps/src/maxtext/trainers/pre_train/train.py", line 692, in run
    train_loop(config, recorder)
  File "/deps/src/maxtext/trainers/pre_train/train.py", line 517, in train_loop
    ) = train_utils.setup_train_loop(config, recorder)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/deps/src/maxtext/utils/train_utils.py", line 217, in setup_train_loop
    raise NotImplementedError("Pure NNX support has not been implemented yet.")
NotImplementedError: Pure NNX support has not been implemented yet.
XPK End: Sun Apr 19 11:45:09 UTC 2026
EXIT_CODE=1

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Metrics: Linen vs NNX · `test/pipeline-scan-nnx`

Metrics: Linen vs NNX · test/pipeline-scan-nnx

Metrics: Linen vs NNX · `test/pipeline-scan-nnx`