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Add offloading checkpoint policy #51

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Add offloading checkpoint policy #51

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5 changes: 5 additions & 0 deletions praxis/layers/checkpoint_policy.py
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@ class AutodiffCheckpointType(str, enum.Enum):
SAVE_CONTEXT = 'save_context'
SAVE_CONTEXT_AND_OUT_PROJ = 'save_encoded_and_out_proj'
SAVE_DOT_ONLY = 'save_dot_only'
OFFLOAD_DOT_WITH_NO_BATCH_DIM = 'offload_dot_with_no_batch_dims'
SAVE_DOT_WITH_NO_BATCH_DIM = 'save_dot_with_no_batch_dims'
SAVE_DOT_FOR_MLPERF_200B = 'save_dot_for_mlperf_200b'
SAVE_ITERATION_INPUT = 'save_iteration_input'
Expand All @@ -50,6 +51,10 @@ def custom_policy(checkpoint_policy: AutodiffCheckpointType):
return jax.checkpoint_policies.everything_saveable
if checkpoint_policy == AutodiffCheckpointType.SAVE_DOT_ONLY:
return jax.checkpoint_policies.checkpoint_dots
if checkpoint_policy == AutodiffCheckpointType.OFFLOAD_DOT_WITH_NO_BATCH_DIM:
return jax.checkpoint_policies.offload_dot_with_no_batch_dims(
'device', 'pinned_host'
)
if checkpoint_policy == AutodiffCheckpointType.SAVE_DOT_WITH_NO_BATCH_DIM:
return jax.checkpoint_policies.checkpoint_dots_with_no_batch_dims
if checkpoint_policy == AutodiffCheckpointType.SAVE_QKV_OUT_PROJ:
Expand Down