importtorchfromprevious_chaptersimportGPTModelGPT_CONFIG_124M={"vocab_size":50257,# Vocabulary size"context_length":256,# Shortened context length (orig: 1024)"emb_dim":768,# Embedding dimension"n_heads":12,# Number of attention heads"n_layers":12,# Number of layers"drop_rate":0.1,# Drop...