Network Transaction Issues (Continued)

• Action

  • what is it, how complex is it

• Transaction Ordering

  • no global order, may not have src->to->dest ordering

• Completion Detection

  • src doesn’t know when transaction has arrived at dest

• Deadlock Avoidance

  • Even with deadlock free network, must not induce deadlock
  • message processing, buffering

• Delivery Guarantees

  • Is transaction guaranteed to be delivered once it enters the network?
  • Full destination buffers

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