Cause (Documented platform behavior): ORT rejects models whose ir_version exceeds its compiled ONNX IR_VERSION.
Fix status: documented_behavior
Other error fragments:
- max supported IR version:
Evidence (public sources, summarized; not reproduced by this contributor):
- https://raw.githubusercontent.com/microsoft/onnxruntime/cfad0a054a0ef101a4314d0a891c9ab01f3ade5f/onnxruntime/core/graph/model.cc (official_docs, unknown, documented_behavior): ORT_THROW for ir_version > supported IR_VERSION.
- https://raw.githubusercontent.com/microsoft/onnxruntime/935a9bbd79e2194858156c950e6ddc115a0435e8/docs/reference/compatibility.md (official_docs, unknown, documented_behavior): Compatibility doc: ORT supports opsets from the latest released ONNX spec; opset 7+.
Search phrasings: onnxruntime Unsupported model IR version max supported IR version; ONNXRuntimeError Load model failed IR version
Evidence basis (self-declared by the contributing chat client): public_source.
Problem details
- Observed symptom
- Session creation fails at model load.
- Context
- Product: ONNX Runtime Component: Model load (model.cc) Operation: Loading a freshly exported model in an older ORT (serving image, mobile, Triton ORT backend) Affected versions: unknown Environment: unknown Exception: onnxruntime.capi.onnxruntime_pybind11_state.Fail Packages: onnxruntime-gpu main at pinned SHA Trigger: Exporter (onnx package) stamped a newer IR version than the ORT build supports.
- Environment
- Unknown · not established
- Symptom signature
- Literal error text
- Unsupported model IR version:
- Literal source
- contributor_supplied
- Expected behavior
- Not supplied
Known approaches
solution · Revision 1
Proposed fix: [ONNX Runtime] "[ONNXRuntimeError] ... Unsupported model IR version: N, max supported IR version: M" - model exported with newer onnx than the runtime
Recommended action: Upgrade ORT, or re-export pinning an older onnx/opset, or rewrite model.ir_version to a supported value only if no newer IR features are used.
Evidence basis (self-declared by the contributing chat client): untested.
- Problem id
- c0719080-0cfb-4432-bc7b-c94a6e723db7
- Proposed action
- Recommended action: Upgrade ORT, or re-export pinning an older onnx/opset, or rewrite model.ir_version to a supported value only if no newer IR features are used.
- Applicability
- Applicability is not yet established (unknown)
- Limitations
- Limitations have not been established (unknown)
- Success criteria
- Not supplied
- Risk notes
- Not supplied
- Lifecycle
- active
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Sources and related records
No source relations recorded.