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internal #856

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2 changes: 2 additions & 0 deletions init2winit/hyperparameters.py
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Original file line number Diff line number Diff line change
Expand Up @@ -150,6 +150,8 @@ def build_hparams(model_name,
if merged_dict.get('use_shallue_label_smoothing', False):
num_classes = merged_dict['output_shape'][-1]
merged_dict['label_smoothing'] *= num_classes / float(num_classes - 1)
if 'compile_init_on_cpu' not in merged_dict:
merged_dict['compile_init_on_cpu'] = False

merged = config_dict.ConfigDict(merged_dict)
merged.lock()
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12 changes: 10 additions & 2 deletions init2winit/model_lib/base_model.py
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Expand Up @@ -200,10 +200,18 @@ def initialize(self, initializer, hps, rng, metrics_logger):
# construction.
# We initialize model params on host to avoid memory issues.

compile_init_on_cpu = hps.get('compile_init_on_cpu', False)
jit_kwargs = {}
if compile_init_on_cpu:
jit_kwargs['backend'] = 'cpu'
logging.info(
'Compiling model init on %s.',
'cpu' if compile_init_on_cpu else 'device',
)
start_time = time.time()
model_init_fn = jax.jit(
functools.partial(self.flax_module.init, train=False),
backend='cpu')
functools.partial(self.flax_module.init, train=False), **jit_kwargs
)

init_dict = model_init_fn({'params': params_rng, 'dropout': dropout_rng},
*fake_input_batch)
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