hipDNN backend heuristic type C API

hipDNN backend heuristic type C API#

2026-03-31

2 min read time

Applies to Linux and Windows

Heuristic mode types for engine selection.

This file defines the heuristic modes used when querying available engines for an operation graph. Different modes provide different trade-offs between search time and result quality.

Enums

enum hipdnnBackendHeurMode_t#

Heuristic modes for engine discovery.

When creating an engine heuristic descriptor, specify a mode to control how engines are discovered and ranked. The mode affects both the search algorithm and the quality of performance estimates.

See also

HIPDNN_ATTR_ENGINEHEUR_MODE

See also

hipdnnBackendSetAttribute()

Values:

enumerator HIPDNN_HEUR_MODE_FALLBACK#

Fallback mode - functional support only.

Returns engines that are functionally correct for the given operation graph. No performance tuning or optimization is performed. This is the most reliable mode for finding a working configuration.

Use this mode when:

  • You need guaranteed functional correctness

  • Performance is not critical

  • You want the fastest engine discovery