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Open AccessProceedings ArticleDOI

In-Datacenter Performance Analysis of a Tensor Processing Unit

TLDR
The Tensor Processing Unit (TPU) as discussed by the authors is a custom ASIC deployed in datacenters since 2015 that accelerates the inference phase of neural networks (NN) using a 65,536 8-bit MAC matrix multiply unit that offers a peak throughput of 92 TeraOps/second (TOPS).
Abstract
Many architects believe that major improvements in cost-energy-performance must now come from domain-specific hardware. This paper evaluates a custom ASIC---called a Tensor Processing Unit (TPU) --- deployed in datacenters since 2015 that accelerates the inference phase of neural networks (NN). The heart of the TPU is a 65,536 8-bit MAC matrix multiply unit that offers a peak throughput of 92 TeraOps/second (TOPS) and a large (28 MiB) software-managed on-chip memory. The TPU's deterministic execution model is a better match to the 99th-percentile response-time requirement of our NN applications than are the time-varying optimizations of CPUs and GPUs that help average throughput more than guaranteed latency. The lack of such features helps explain why, despite having myriad MACs and a big memory, the TPU is relatively small and low power. We compare the TPU to a server-class Intel Haswell CPU and an Nvidia K80 GPU, which are contemporaries deployed in the same datacenters. Our workload, written in the high-level TensorFlow framework, uses production NN applications (MLPs, CNNs, and LSTMs) that represent 95% of our datacenters' NN inference demand. Despite low utilization for some applications, the TPU is on average about 15X -- 30X faster than its contemporary GPU or CPU, with TOPS/Watt about 30X -- 80X higher. Moreover, using the CPU's GDDR5 memory in the TPU would triple achieved TOPS and raise TOPS/Watt to nearly 70X the GPU and 200X the CPU.

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PointAcc: Efficient Point Cloud Accelerator

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TensorFlow on State-of-the-Art HPC Clusters: A Machine Learning use Case

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Software-Defined Design Space Exploration for an Efficient DNN Accelerator Architecture

TL;DR: In this article, an application-driven framework for architectural design space exploration of DNN accelerators is proposed, which is based on a hardware analytical model of individual DNN operations.
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ITT-RNA: Imperfection Tolerable Training for RRAM-Crossbar-Based Deep Neural-Network Accelerator

TL;DR: An accelerator-friendly neural-network training method, by leveraging the inherent self-healing capability of the neural network, to prevent the large-weight synapses from being mapped to the imperfect memristor cells, and a dynamic adjustment mechanism to extend the above method for DNNs, such as multilayer perceptrons (MLPs).
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An Efficient Parallel Secure Machine Learning Framework on GPUs

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