=== Tony's M2 Meeting Minutes ===

  * Blesscc++ keep track of injection of all nodes: scalability solutions
      * keep track of highest (how?)
      * random sampling
      * per region injection rate (hierarchically)
	
  * Michael: Inline feedback more ideal
      * give reflected packets dedicated virtual channel
      * Onur: feeling that it has limited effectiveness compared to backchannel
      * highest priorty might work
      * can eliminate starvation
      * must resend reflected flits
	
  * Link-monitoring
      * keep track of congestion over n>1 cycles 
      * at every cycle may be unfair
      * very local view of network
      * just looking at k is conservative, not efficient
      * investigate whether k can depend on MTTS values/deflection rates
          * case where every link in use but no deflections
          * k depends on network location, neighbors
          * k can be congestion predictor, large problem space to explore
	

== Other Points ==
  - duato regional congestion notification / bluegene
  - router knows local and onehop deflection rates
  - back network signaling: starvation response granularity
  - distinguish between starvation freedom and congestion control
      * target starvation freedom first
      * progress to congestion control for performance, fairness, latency, bandwidth
  - congestion: how to detect, when signal, who signaled
      * once detected: how to throttle, when, who to throttle, how long to throttle
  -feedback on throttling decisions? back back network?
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