COMPUTER ARCHITECTURE
MEMORY SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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no remote mapping access
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network operation of remote memory access
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no remote memory access
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network remote memory access
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Detailed explanation-1: -No Remote Memory Access (abbreviated as NoRMA) is a computer memory architecture for multiprocessor systems, given its name by Rashid (1987). In a NoRMA architecture, the address space globally is not unique and the memory is not globally accessible by the processors.
Detailed explanation-2: -This difference in the address space of the memory is also reflected at the software level: distributed memory multicomputer is programmed based on the message-passing paradigm, while NUMA machines are programmed based on the global address space principle.
Detailed explanation-3: -Definition. A Cache-Only Memory Architecture (COMA) is a type of cache-coherent nonuniform memory access (CC-NUMA) architecture. Unlike in a conventional CC-NUMA architecture, in a COMA, every shared-memory module in the machine is a cache, where each memory line has a tag with the line’s address and state.