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A fundamental problem in distributed computing and multi-agent systems is to achieve overall system reliability in the presence of a number of faulty processes. use this tag for consensus kind of problem.

2 votes
1 answer
238 views

Consensus anomaly about read-write registers and test&set

Why is the consensus number for test-and-set, 2? I also read that read/write registers have consensus number 1. … The protocol in the accepted answer of the link is as mentioned below Suppose that we have two threads 0 and 1 that need to reach consensus. …
ultimate cause's user avatar
1 vote
0 answers
141 views

Behaviour of Regular Registers for Multiple Writer Case ( in context of Safe, Regular and At...

From the link below I understand the behaviour of different kinds of registers. However that raises few more queries in my mind. https://stackoverflow.com/questions/8871633/whats-the-difference-betwe …
ultimate cause's user avatar
3 votes
1 answer
292 views

Is it possible to write a wait free leader election algorithm?

Finally I want to know how to derive the consensus number of this algorithm. Googling did not work. …
ultimate cause's user avatar
6 votes
1 answer
533 views

Why $e(C_i) = D_i$ is correct assumption? (FLP Impossibility 1985 - Lemma 3)

My question is regarding well known FLP paper Impossibility of Distributed Consensus with One Faulty Process by Fischer, Lynch and Patterson While discussing Lemma 3, in 4th paragraph, authors make an … In other way, question would be, how to prove that all three points mentioned above can actually arise in some consensus protocol with assumptions given in lemma. …
ultimate cause's user avatar