Hi,
When compared with other cache coherence protocols, we will find
that there exists many transient states in Ruby which complicate state
transition. For example, state IS is a transient state in MESI protocol when
we transform state I to state S. In other implementation, the state
transitions are atomic so that state IS is no longer existed. Thus I wonder
whether state IS is valid or not in standard MESI protocol.
--Yongbing Huang
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