1. 按比例
config = tf.ConfigProto()
config.gpu_options.per_process_gpu_memory_fraction = 0.4
session = tf.Session(config=config, ...)
or
session_bundle_config.mutable_session_config()
->mutable_gpu_options()
->set_per_process_gpu_memory_fraction(0.4);
2.按需求增长
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
session = tf.Session(config=config, ...)
or
session_bundle_config.mutable_session_config()
->mutable_gpu_options()
->set_allow_growth(true);