Accelerating Leaderboard-Topping ASR Models 10x with NVIDIA NeMo
Summary NVIDIA NeMo has made significant strides in accelerating automatic speech recognition (ASR) models, achieving up to 10x speed improvements. This article delves into the key enhancements that enabled these advancements, including autocasting tensors to bfloat16, the innovative label-looping algorithm, and the introduction of CUDA Graphs available with NeMo 2.0.0. Overcoming Speed Performance Bottlenecks NVIDIA NeMo ASR models faced several speed performance bottlenecks, including casting overheads, low compute intensity, and divergence performance issues....