9: AI Model Inference Optimization

This episode explores optimizing AI model inference for speed and cost, recognizing that a model's real-world utility depends on its efficient deployment rather than just its quality. It covers essential performance metrics like latency (breaking down into Time to First Token and Time Per Output Token), throughput (related to cost), and hardware utilization (MFU and MBU), highlighting the trade-offs involved. The material also provides an overview of AI accelerators, explaining how specialized hardware like GPUs and TPUs are crucial for efficient inference and detailing key hardware characteristics like computational capabilities, memory, and power consumption. Finally, it discusses inference optimization techniques at the model level (like compression and attention mechanism adjustments) and service level (such as different batching strategies and parallelism), emphasizing that understanding these methods is valuable even when using pre-optimized services.

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