Error correction methods for computational ssd supporting rapid file semantic search

Abstract

Devices and methods to implement semantic searching on SSD through a computational SSD system that distributes computing to each NAND flash die of the SSD while the SSD controller handles the results aggregation with new on-die computation logic circuits to provide on device file semantic search are disclosed herein. The computational SSD system can read file feature vectors from multiple dies to the SSD controller, and if needed, these feature vectors may be buffered in DRAM and controller handles distance computing. Local, on-die AI/ML processing units may perform, for example, computation and comparison operations and pass the processing scores and results to the SSD controller. The SSD controller aggregates results from all dies and returns the result to the host. The feature vector store size, circuitry and number of on-die AI/ML processing units may be configured as needed to adapt to different tasks, system constraints, and/or feature vector sizes.