oneCCL API

Note

This document describes the legacy C++ API. Documentation for the new C API that closely follows the NVIDIA Collective Communications Library (NCCL)* API standard can be found here.

The existing C++ API will remain the default API for the 2021.17 release.

• Initialization
• oneCCL Concepts
  • Communicator
  • Context
  • Device
  • Event
  • Key-value Store
  • Stream
• Communication Operations
  • Datatypes
  • Collective Operations
  • Point-To-Point Operations

Generic workflow

Refer to oneCCL specification for more details about generic workflow with oneCCL API.

Error Handling

Refer to oneCCL specification for more details about error handling.