TPU Pods enable large-scale parallelism by distributing model and data across multiple TPU cores, accelerating BERT training significantly.
Here is the code snippet you can refer to:

In the above code, we are using the following key points:
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TPUClusterResolver: Detects and connects to the TPU Pod. 
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TPUStrategy: Distributes training across all TPU cores in the pod. 
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HuggingFace's TFBertForPreTraining: Loads pretrained BERT for fine-tuning or large-scale training. 
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Tokenization with padding/truncation: Prepares inputs for uniform TPU batch processing. 
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Model compilation and training inside strategy scope ensures it runs on TPU. 
Hence, TPU Pods scale BERT training efficiently by leveraging distributed computation across multiple cores.