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Marco Realacci 2025-03-31 09:40:43 +02:00
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Concurrent Systems/notes/9 - Consensus.md
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@ -160,4 +160,8 @@ If the specifications of Z’s operations are non-deterministic, then 𝛿 does
How to force every process to run the very same sequence of operations on their local simulations? How to force every process to run the very same sequence of operations on their local simulations?
Three possible ways! Three possible ways!
1. Brute forc 1. **Brute force solution:** for every pair ⟨s , op(args)⟩, fix a priori one element of 𝛿(⟨s , op(args)⟩) to be chosen
- literally cancelling non-determinism, but this is not something we want...
2. additional consensus objects, one for every element of every list
3. reuse the same consensus object: for all k, `CONS[k]` not only chooses the list of invocations, but also the final state of every invocation
- the proposals should also pre-calculate the next state and propose one