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Chapter 5 (Memory technology (SRAM (expensive but fast), DRAM (cheap but…
Chapter 5
Memory technology
SRAM
expensive but fast
DRAM
cheap but slow
Flash memory
EEPROM
Magnetic disk
Virtual Memory
Physical Address / Virtual Address
address translation
Q. 각 프로세스마다 translation 하는 방법? 함수?를 가지고 있는 건가요?
page fault
TLB
Caches
ex) library -> desk
Accessing
Handling misses
Handling writes
Impoving Cache Performance
Reducing Misses
Flexible placement of blocks
Locating a block in the cache
Choosing which block to replace
Reducing the miss penalty using multilevel caches
Software Optimization via blocking
Dependable Memory Hierarchy
Failure
Service accomplishment, where the service is delivered as specied
Service interruption, where the delivered service is di erent from the specied service
SEC / DED
Virtual Machines
Isolation and Security
Sharing
Using a Finite-State Machine to Control a
Simple Cache
Parallelism and Memory Hierarchy: Cache Coherence