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Update tfprocess.py for TensorFlow 2.4+ #57

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Update tfprocess.py for TensorFlow 2.4+ #57

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4 changes: 2 additions & 2 deletions move_prediction/maia_chess_backend/maia/tfprocess.py
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Original file line number Diff line number Diff line change
Expand Up @@ -120,7 +120,7 @@ def __init__(self, cfg, name, collection_name):
tf.config.experimental.set_visible_devices(gpus[self.cfg['gpu']], 'GPU')
tf.config.experimental.set_memory_growth(gpus[self.cfg['gpu']], True)
if self.model_dtype == tf.float16:
tf.keras.mixed_precision.experimental.set_policy('mixed_float16')
tf.keras.mixed_precision.set_global_policy('mixed_float16')

self.global_step = tf.Variable(0, name='global_step', trainable=False, dtype=tf.int64)

Expand All @@ -147,7 +147,7 @@ def init_net_v2(self):
self.optimizer = tf.keras.optimizers.SGD(learning_rate=lambda: self.active_lr, momentum=0.9, nesterov=True)
self.orig_optimizer = self.optimizer
if self.loss_scale != 1:
self.optimizer = tf.keras.mixed_precision.experimental.LossScaleOptimizer(self.optimizer, self.loss_scale)
self.optimizer = tf.keras.mixed_precision.LossScaleOptimizer(self.optimizer)
def correct_policy(target, output):
output = tf.cast(output, tf.float32)
# Calculate loss on policy head
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