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Edit; View history; Tools. Tools. ... Download as PDF; Printable version; In other projects ... the MSI protocol - a basic cache-coherence protocol - operates in ...
Protocol MOESI type – Data stored in M (D) or in O (SD) and the other caches in S (V) – Data is sent to the requesting cache from the "owner" M (D) or O (SD). The requesting cache is set S (V) while M (D) is changed in O (SD). – The MM is not updated. Protocols MESI type and MEI – Data stored in M (D) and the other caches in S (V) state
The MOSI protocol is an extension of the basic MSI cache coherency protocol. It adds the O wned state, which indicates that the current processor owns this block, and will service requests from other processors for the block.
The MESI protocol is an invalidate-based cache coherence protocol, and is one of the most common protocols that support write-back caches. It is also known as the Illinois protocol due to its development at the University of Illinois at Urbana-Champaign. [1] Write back caches can save considerable bandwidth generally wasted on a write through ...
In computing, MOESI ("Modified Owned Exclusive Shared Invalid") is a full cache coherency protocol that encompasses all of the possible states commonly used in other protocols. In addition to the four common MESI protocol states, there is a fifth "Owned" state representing data that is both modified and shared. This avoids the need to write ...
The MESIF protocol is a cache coherency and memory coherence protocol developed by Intel for cache coherent non-uniform memory architectures. [1] The protocol consists of five states, Modified (M), Exclusive (E), Shared (S), Invalid (I) and Forward (F). [2] The M, E, S and I states are the same as in the MESI protocol. The F state is a ...
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