Overview

The DataCopy APIs provide comprehensive data transfer capabilities. They support various data transfer scenarios, and can perform real-time format conversion, quantization, and activation during the transfer. These APIs enable data transfer between the local memory and global memory, as well as data transfer within the local memory.

The following table lists DataCopy functions and their support for each transfer path.

Function	Description	Local Memory -> Global Memory	Global Memory -> Local Memory	Local Memory -> Local Memory
Basic Data Transfer	Provides basic data transfer capabilities. The original format and content of data remain unchanged during transfer. Both continuous and discontinuous data transfer are supported.	√	√	√
Enhanced Data Transfer	Enhances the data transfer capability. Compared with basic data transfer APIs, the enhanced data transfer API adds real-time computation over the CO1 -> CO2 path.	√	√	√
Slice Data Transfer	Supports slice data transfer, which extracts subsets of multi-dimensional tensor data for transfer.	√	√	×
Real-time ND2NZ Conversion During Data Transfer	Supports ND-to-NZ format conversion during data transfer.	×	√	√
Real-time NZ2ND Conversion During Data Transfer	Supports NZ-to-ND format conversion during data transfer.	√	×	×
Real-time DN2NZ Conversion During Data Transfer	Supports DN-to-NZ format conversion during data transfer.	×	√	×
Real-time Quantization and Activation During Data Transfer	Supports quantization and ReLU activation during data transfer, as well as NZ-to-ND format conversion on the path from the local memory to global memory.	√	×	√
Multi-dimensional Data Transfer	Supports more flexible configuration of the dimensions and strides for data transfer.	×	√	×

Parent topic: Mask Operations