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[FSDP] Make env var and dataclass flag consistent for cpu_ram_efficient_loading #3307

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[FSDP] Make env var and dataclass flag consistent for cpu_ram_efficient_loading #3307

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10 changes: 10 additions & 0 deletions src/accelerate/utils/dataclasses.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1678,6 +1678,16 @@ def __post_init__(self):
)
self.sync_module_states = True

if self.cpu_ram_efficient_loading != bool(
str_to_bool(os.environ.get(env_prefix + "CPU_RAM_EFFICIENT_LOADING", "False"))
):
env_var = env_prefix + "CPU_RAM_EFFICIENT_LOADING"
warnings.warn(
f"The `cpu_ram_efficient_loading` flag for `FullyShardedDataParallelPlugin` does not match the environment variable {env_var}. "
"Setting environment variable to match `cpu_ram_efficient_loading`."
)
os.environ[env_var] = str(self.cpu_ram_efficient_loading)

if isinstance(self.mixed_precision_policy, dict):
self.set_mixed_precision(self.mixed_precision_policy)

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