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NCCL Common Utilities
Description
This directory contains shared utilities and helper functions used across all NCCL examples. These utilities provide common functionality for error handling, device management, and MPI integration.
Components
Headers (include/)
- utils.h: General utility functions
- nccl_utils.h: NCCL error checking macros
- mpi_utils.h: MPI error checking macros
Source Files (src/)
- utils.cc: General utility functions
Key Features
Error Checking Macros
#define NCCLCHECK(cmd) // NCCL error checking
#define CUDACHECK(cmd) // HIP error checking
#define MPICHECK(cmd) // MPI error checking
Usage in Examples
Include the headers in your example source files:
#include "utils.h"
#include "mpi_utils.h"
Notes
- All utilities include comprehensive error checking
- Functions are designed to be thread-safe
- Memory management functions handle null pointers safely
- MPI utilities are only needed for multi-process examples