Kevin, In regard to asynchronous I/O, you said: > This applies equally to the request model. Nothing prevents the submission > (but not necessarily resolution) of a later I/O request during resolution > of an earlier request if those requests are independent (and the request > stream is hyper-strict). Isn't the resolution of an I/O request essential? If we cannot get the result of an I/O request out of the response stream, does that not indicate that the stream model is inadequate for allowing the kind of parallelism I mentioned? _______________________________________________________________________________ [EMAIL PROTECTED] Evan Ireland, Department of Computer Science, +64-6-3569099 x8541 Massey University, Palmerston North, New Zealand.