Wait-free consensus in “in-phase”
multiprocessor systems
Papatriantafilou, M.
Tsigas, P.
Abstract:
In the consensus problem in a system with n
processes, each process starts with a private input value and has to choose
irrevocably a decision value, which was the input value of some process of the
system; moreover, all processes have to decide on the same value. This work
deals with the problem of wait-free-fully resilient to processor crash and
napping failures-consensus of n processes in an “in-phase” multiprocessor
system. It proves the existence of a solution to the problem, in this system by
presenting a protocol which ensures that each process will reach decision within
at most n(n-3)/2+3 steps of its own in the worst case, or within n steps if no
process fails