[JAVA] Ability to construct a Tensor from a GPU memory pointer about onnxruntime HOT 5 OPEN

If we expose direct creation of GPU tensors we'd have to have a data copy somewhere. I'm currently not sure where is the best place for that copy, and if the GPU tensors should be different in the type system somehow to make it clear that they don't have direct access to the memory.

Is the use case in a pipeline of models all resident on the GPU?

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Yup, the models are on the GPU. In my case, it's not a direction creation of GPU tensor, but rather wrapping a raw resource, a D3D11 texture, converted into a CUDA resource with CUDA's Direct3D 11 Interoperability. CreateTensorWithDataAsOrtValue is used for this. I don't think the CSharp API has any distinction between an OrtValue that is backed by a GPU buffer or a CPU buffer. In fact, calling GetTensorMutableRawData on a GPU backed OrtValue gives a System.AccessViolationException. I personally think having a distinction in the type system would be nice.

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Ok, so if you've made the tensor elsewhere via JNI what kind of type would it be to allow wrapping in an OrtValue? Is it a bare pointer/long?

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Do not forget about disposing native resources.

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