feat(hipep): add hipep-backend selected via profile=llm#23
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apwojcik
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Jun 18, 2026
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Can you please change hipep* to hipdnn* in the source directory name and the backend name as well? The backend name should not reveal that it is a standalone execution provider.
apwojcik
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Jun 18, 2026
| if(USE_AMDGPU) | ||
| set(CACHE{USE_DML} TYPE BOOL FORCE VALUE ON) | ||
| set(CACHE{USE_MIGRAPHX} TYPE BOOL FORCE VALUE ON) | ||
| set(CACHE{USE_HIPEP} TYPE BOOL FORCE VALUE ON) |
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Please do not include it in AMDGPU EP automatically yet. The HIPDNN backend has to be built on demand for now. Please reflect that in the source code. One has to be able to build AMDGPU EP without the HIP backend.
Add the hipep backend to the AMD GPU umbrella EP: load the pre-built hipep-backend plugin EP DLL as a third backend (alongside DirectML and MIGraphX) and route to it when the user selects profile=llm. - Profile::Llm parses "llm" / "3"; gpu_ep.cc routes profile=llm to ProviderFactory::CreateHipepBackend. - ProviderFactory loads hipep-backend and forwards CreateEp / ReleaseEp to it, mirroring the DirectML/MIGraphX backend pattern. hipep is a pre-built plugin EP DLL loaded at runtime, so no ROCm SDK is required to build amdgpu-ep. - CreateEp forwards the ORT-selected hardware device(s) + ep_metadata to the backend's CreateEp. Unlike DirectML/MIGraphX, hipep's CreateEp rejects num_devices == 0, so the umbrella must pass the selected device. DirectML and MIGraphX paths are unchanged. Co-authored-by: Cursor <cursoragent@cursor.com>
…ctML/MIGraphX The hipep backend no longer requires the umbrella to forward the ORT-selected device: its CreateEp now tolerates a null device array / num_devices == 0 (ROCm/MorphiZen#234). Drop the devices/ep_metadata parameters from ProviderFactory::CreateHipepBackend and the ExecutionProvider constructor and pass nullptr/nullptr/0, so the hipep path matches the DirectML and MIGraphX backends and the EP constructor keeps the same signature as the sibling EPs. Co-authored-by: Cursor <cursoragent@cursor.com>
Add src/hipep parallel to directml/migraphx. It builds hipep-backend.dll, a thin pass-through OrtEpFactory that loads hipep.dll, forwards CreateEpFactories, and returns the HIP EP's factory unchanged so the AMD GPU umbrella forwards to it directly. ReleaseEpFactory forwards to the HIP EP and unloads the DLL. Only a single factory is supported. Wired via a new USE_HIPEP option (forced on by USE_AMDGPU) and add_subdirectory(hipep). Co-authored-by: Cursor <cursoragent@cursor.com>
CreateEpFactories can be invoked more than once (e.g. a real session plus the device-init session in OGA). The previous single-handle logic reloaded the DLL on each call (leaking the earlier handle) and unloaded it on the first ReleaseEpFactory while later factories were still live. Load on the first factory and unload only after the last is released; roll back the refcount if the load fails so a retry re-attempts it. Co-authored-by: Cursor <cursoragent@cursor.com> Co-authored-by: Cursor <cursoragent@cursor.com>
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Address PR review: the backend name must not contain "ep". Rename the umbrella backend shim from hipep to hip (src/hip/, hip-ep target, hip-backend.dll, USE_HIP option, and all C++ identifiers). The shim now loads the HIP EP DLL as hipgpu (hipgpu.dll / libhipgpu.so), to be renamed on the onnx-hipdnn-ep side in a follow-up. Co-authored-by: Cursor <cursoragent@cursor.com>
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Add a
hipepbackend to the AMD GPU umbrella EP, selected via theprofile=llmprovider option.src/hipep/buildshipep-backend.dll, a thinOrtEpFactoryshim (parallel todirectml/migraphx) that loads the HIP EP DLL (hipep.dll), forwardsCreateEpFactories, and returns its factory unchanged. Single factory only.hipep-backendalongside the other backends and routesprofile=llmto it, passing no device (matching the DirectML/MIGraphX backends).related OGA PR: microsoft/onnxruntime-genai#2194