TensorFlow Lite's memory arena has been optimized to improve performance by reducing initialization overhead, making it more efficient for running models on smaller edge devices. Profiling with Simpleperf identified inefficiencies, such as the high runtime cost of the ArenaPlanner::ExecuteAllocations function, which accounted for 54.3% of the runtime. By caching constant values, optimizing tensor allocation processes, and reducing the complexity of deallocation operations, the runtime overhead was significantly decreased. These optimizations resulted in the memory allocator's overhead being halved and the overall runtime reduced by 25%, enhancing the efficiency of TensorFlow Lite's deployment on-device. This matters because it enables faster and more efficient machine learning inference on resource-constrained devices.
