Data Types

oneCCL specification defines the following data types that can be used for collective communication operations:

C version of API:

typedef enum
{
    ccl_dtype_char   = 0,
    ccl_dtype_int    = 1,
    ccl_dtype_bfp16  = 2,
    ccl_dtype_float  = 3,
    ccl_dtype_double = 4,
    ccl_dtype_int64  = 5,
    ccl_dtype_uint64 = 6,
} ccl _datatype_t;

C++ version of API:

enum class data_type
{
    dt_char = ccl_dtype_char,
    dt_int = ccl_dtype_int,
    dt_bfp16 = ccl_dtype_bfp16,
    dt_float = ccl_dtype_float,
    dt_double = ccl_dtype_double,
    dt_int64 = ccl_dtype_int64,
    dt_uint64 = ccl_dtype_uint64,
};

ccl_dtype_char

Corresponds to char in C language

ccl_dtype_int

Corresponds to signed int in C language

ccl_dtype_bfp16

BFloat16 datatype

ccl_dtype_float

Corresponds to float in C language

ccl_dtype_double

Corresponds to double in C language

ccl_dtype_int64

Corresponds to int64_t in C language

ccl_dtype_uint64

Corresponds to uint64_t in C language