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Orbax Loading and Sharding Support feature#21903

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amitsrivastava78 wants to merge18 commits intokeras-team:master
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bc9060c
Added Load method for orbax
amitsrivastava78Dec 5, 2025
43d45d0
Added Sharding Support
amitsrivastava78Dec 8, 2025
4125ae0
Fix memory corruption in Model.load() by simplifying checkpoint loading
amitsrivastava78Dec 8, 2025
77689d9
Fix bare except clauses in orbax_checkpoint_test.py
amitsrivastava78Dec 8, 2025
ece275d
Refactor duplicated tensor-to-numpy conversion code
amitsrivastava78Dec 8, 2025
0464c3b
Multi-host feature support
amitsrivastava78Dec 8, 2025
d8a86e8
Fixed CI failure
amitsrivastava78Dec 8, 2025
43fbecd
Implement JAX-only multi-host checkpointing with proper Orbax APIs
amitsrivastava78Dec 10, 2025
82b345f
Re-run CI
amitsrivastava78Dec 11, 2025
9e35729
Re-run CI
amitsrivastava78Dec 11, 2025
5a5c810
Fixed review comments
amitsrivastava78Dec 12, 2025
b503b79
Fixed review comments
amitsrivastava78Dec 12, 2025
e45c186
Fixed review comments
amitsrivastava78Dec 12, 2025
f027ba9
Refactor Orbax integration to use LazyModule consistently
amitsrivastava78Dec 15, 2025
802d785
Fix Orbax checkpoint preservation policy and asset functionality
amitsrivastava78Dec 15, 2025
f98e27c
Fix Orbax checkpoint preservation policy and asset functionality
amitsrivastava78Dec 15, 2025
5ff095a
Integrate assets into Orbax pytree as checkpointables
amitsrivastava78Dec 17, 2025
1f28e74
Implement asset loading support in model.load_weights for Orbax check…
amitsrivastava78Dec 17, 2025
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Fixed review comments
  • Loading branch information
@amitsrivastava78
amitsrivastava78 committedDec 12, 2025
commite45c186b7963336fa5722d9092086957e7a0c716

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3 changes: 3 additions & 0 deletionskeras/src/saving/saving_api.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -130,6 +130,9 @@ def _load_model_from_orbax_checkpoint(

def _is_orbax_checkpoint(filepath):
"""Check if the given path is an Orbax checkpoint directory."""
if not os.path.exists(filepath):
return False

try:
from keras.src.utils.module_utils import ocp

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