hipDNN backend attribute type C API

2026-03-31

3 min read time

Applies to Linux and Windows

Data type identifiers for hipDNN backend attribute values.

This file defines the types used to specify the data type of attribute values when calling hipdnnBackendSetAttribute() and hipdnnBackendGetAttribute().

Enums

enum hipdnnBackendAttributeType_t

Data types for backend descriptor attribute values.

When setting or getting attributes on backend descriptors, you must specify the data type of the value being passed. These constants identify the expected type for proper marshalling.

Values:

enumerator HIPDNN_TYPE_HANDLE

hipDNN handle (hipdnnHandle_t)

enumerator HIPDNN_TYPE_DATA_TYPE

Data type enumeration (hipdnnDataType_t)

enumerator HIPDNN_TYPE_BOOLEAN

Boolean value (bool)

enumerator HIPDNN_TYPE_INT64

64-bit signed integer (int64_t)

enumerator HIPDNN_TYPE_FLOAT

Single precision floating point (float)

enumerator HIPDNN_TYPE_DOUBLE

Double precision floating point (double)

enumerator HIPDNN_TYPE_VOID_PTR

Generic pointer (void*) - typically device memory.

enumerator HIPDNN_TYPE_HEUR_MODE

Heuristic mode enumeration (hipdnnBackendHeuristicMode_t)

enumerator HIPDNN_TYPE_KNOB_TYPE

Knob type identifier.

enumerator HIPDNN_TYPE_NAN_PROPOGATION

NaN propagation mode.

enumerator HIPDNN_TYPE_NUMERICAL_NOTE

Numerical precision/behavior note.

enumerator HIPDNN_TYPE_LAYOUT_TYPE

Tensor layout type.

enumerator HIPDNN_TYPE_ATTRIB_NAME

Attribute name enumeration (hipdnnBackendAttributeName_t)

enumerator HIPDNN_TYPE_BACKEND_DESCRIPTOR

Backend descriptor handle (hipdnnBackendDescriptor_t)

enumerator HIPDNN_TYPE_GENSTATS_MODE

Generate statistics mode.

enumerator HIPDNN_TYPE_BN_FINALIZE_STATS_MODE

Batch normalization finalize statistics mode.

enumerator HIPDNN_TYPE_BEHAVIOR_NOTE

Engine behavior note.

enumerator HIPDNN_TYPE_TENSOR_REORDERING_MODE

Tensor reordering mode.

enumerator HIPDNN_TYPE_INT32

32-bit signed integer (int32_t)

enumerator HIPDNN_TYPE_CHAR

Character (char)

enumerator HIPDNN_TYPE_SIGNAL_MODE

Signal mode for synchronization.

enumerator HIPDNN_TYPE_FRACTION

Fractional value type.

enumerator HIPDNN_TYPE_NORM_FWD_PHASE

Normalization forward phase.

enumerator HIPDNN_TYPE_RNG_DISTRIBUTION

Random number generator distribution.

enumerator HIPDNN_TYPE_CONVOLUTION_MODE

Convolution mode enumeration (hipdnnConvolutionMode_t)

enumerator HIPDNN_TYPE_POINTWISE_MODE

Pointwise mode enumeration (hipdnnPointwiseMode_t)

enumerator HIPDNN_TYPE_DIAGONAL_ALIGNMENT

Diagonal alignment mode enumeration (hipdnnDiagonalAlignment_t)

enumerator HIPDNN_TYPE_ATTENTION_IMPLEMENTATION

Attention implementation mode enumeration (hipdnnAttentionImplementation_t)

enumerator HIPDNN_TYPE_FLATBUFFER_DATA_STRUCT_EXT

Serialized FlatBuffer data structure (extension)

Used for passing serialized FlatBuffer data to/from the backend. The value should be a hipdnnBackendFlatbufferData_t struct.

enumerator HIPDNN_TYPE_OPERATION_TYPE_EXT

Operation type enumeration (hipdnnOperationType_t, extension)

Used for querying the operation type of an operation descriptor via HIPDNN_ATTR_OPERATION_TYPE_EXT.