const char* filepath = "resnet18.se";
	//Shape engine is very light
	//Each binding should have its unique shape engine
	auto engine = onnx_tool::shape_engine::ShapeEngine();
	engine.deserializeFile(filepath);

	//Avoid to copy this instance
	//Graph contains all weights, you dont want multiple copies
	const char* cfilepath = "resnet18.cg";
	auto ptr = onnx_tool::Graph::deserializeFile(cfilepath);

    //Contruct inference context with compute graph and shape engine
	auto ctx = InferenceContext(ptr, engine);

	//Create one dynamic bindings. bindings means a group of dynamic tensors,
	//bindings can be parallelly executed on multiple CPU cores.
	auto dbindings = ctx.createDynamicBindings();
	auto maxshape = variable_pairs_t{ {"w",224},{"h",224} };
	dbindings->updateMemory(maxshape);//memory allocation for Maxmimum input shapes

	//Runtime Engine=Op Kernels+static weights
	//one runtime Engine can only execute one bindings at the same time
	auto runtime = ctx.createRuntimeEngine();

	auto inputidx=ctx.mDynamicIndexMap["data"];//input tensor
	auto inputptr = (float*)dbindings->mPtrs[inputidx];//input tensor buffer
	auto in_shape = dbindings->mShapePtr[inputidx];//input shape pointer
	auto size = std::accumulate(in_shape.ptr, in_shape.ptr + in_shape.n, 1,std::multiplies<int>());
	for (int i = 0; i < size; i++)
	{
		inputptr[i] = 0.5f;
	}

	printf("\n1x3x224x224\n");
	runtime->forward_dynamic(dbindings);//inference with this bindings

    auto newshape = variable_pairs_t{ {"w",112},{"h",122} };
	dbindings->reshape(newshape);//all shapes in this bindings will be updated, less than 1us.
	printf("\n1x3x112x122\n");
	runtime->forward();//reuse last dynamic bindings

    auto outputidx = ctx.mDynamicIndexMap["resnetv15_dense0_fwd"];//output tensor
	auto outputptr = (float*)dbindings->mPtrs[outputidx];
	auto out_shape = dbindings->mShapePtr[outputidx];//output shape pointer
	auto osize = std::accumulate(out_shape.ptr, out_shape.ptr + out_shape.n, 1, std::multiplies<int>());
	for (int i = 0; i < osize; i++)
	{
		printf("%f ", outputptr[i]);
	}
	printf("\n");