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Description
环境信息
- 设备:华为Mate 40(HarmonyOS)
- 模型:YOLO11n(导出ONNX后转MNN)
- 后端:华为NPU(HIAI DDK版本:100.522.020.100)
复现步骤
- 导出ONNX模型:
yolo export model=best.pt format=onnx - 转换为MNN模型:
mnnconvert -f ONNX --modelFile best.onnx --MNNModel best.mnn --bizCode biz
- NPU推理代码(核心片段):
g_net = std::unique_ptr<Module>(Module::load({}, {}, model_path, g_rtmgr)); // ... 图像预处理(resize、归一化等) ... auto input = _Unsqueeze(resized_var, {0}); // [1,3,640,640] input = _Convert(input, NC4HW4); // 格式转换为NC4HW4 auto outputs = g_net->onForward({input}); // ... 后续处理 ...
错误日志
MNNJNI mOutputOps : 1
HIAI_DDK_MSG graph_impl.cpp SetInputs(56)::"SetInputs failed: input operator size can not be 0."
HIAI_DDK_MSG graph.cpp SetInputs(44)::"SetInputs failed!"
HIAI_DDK_MSG graph_impl.cpp SetOutputs(65)::"Build Graph failed."
HIAI_DDK_MSG graph.cpp SetOutputs(51)::"SetOutputs failed!"
MNNJNI [NPU] Model save failed
AI_FMK hiai_c_version.cpp HIAI_GetVersion_Config(16)::"AI_GetVersion_Config ERROR __system_property_get <= 0"
HIAI_DDK_MSG hiai_ir_build.cpp CreateModelBuff(258)::"use createV2."
AI_FMK hiai_c_mem_buffer.cpp HIAI_MemBuffer_createV2(167)::"AI_MemBuffer_create_from_size [ok]"
MNNJNI [NPU] IR model build failed
问题分析
- MNN模型结构:通过
MNNConvert --JsonFile查看,模型是包含Input算子的(name: in0, dims: [1,3,640,640])。 - NPU后端构建OM模型时,原始
Input算子未被纳入计算图链路,导致input operator size can not be 0
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