Tight bounds for k-set agreement

  title={Tight bounds for k-set agreement},
  author={Soma Chaudhuri and Maurice Herlihy and Nancy A. Lynch and Mark R. Tuttle},
  journal={J. ACM},
We prove tight bounds on the time needed to solve <?Pub Fmt italic>k-set agreement<?Pub Fmt /italic>. In this problem, each processor starts with an arbitrary input value taken from a fixed set, and halts after choosing an output value. In every execution, at most <?Pub Fmt italic>k<?Pub Fmt /italic> distinct output values may be chosen, and every processor's output value must be some processor's input value. We analyze this problem in a synchronous, message-passing model where processors fail… CONTINUE READING
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