This is a runtime which allows you to run computational graphs on different backends
Intialize operations for session
|node||Operation||operation chain to be used in session|
|op||Operation||operation to run|
|ctx||*||context of a run, passing the same context twice in a raw|
will use cached result
|output?||Tensor | HTMLCanvasElement||if passed, the output is put into it.|
Destroy all initialized operations, textures and other data connected to this session.