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Please predict whether this patent is acceptable.PATENT ABSTRACT: Training large neural network models by providing training input to model training machines organized as multiple replicas that asynchronously update a shared model via a global parameter server is described herein. In at least one embodiment, a system including a model module storing a portion of a model and a deep learning training module that communicates with the model module are configured for asynchronously sending updates to shared parameters associated with the model. The techniques herein describe receiving and processing a batch of data items to calculate updates. Replicas of training machines communicate asynchronously with a global parameter server to provide updates to a shared model and return updated weight values. The model may be modified to reflect the updated weight values. The techniques described herein include computation and communication optimizations that improve system efficiency and scaling of large neural networks.