Tutorial 11, Final Review - ECSE 425 â Computer Organization and ...

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Virtual memory●●●●Each program gets a very large virtual addressspace which is then mapped to memory.Move pages in <strong>and</strong> out of memory as you needthem, depending on RAM sizeGood for multitasking: isolation, memorysharing because virtual memory is relocatableThe sum of all the memory needed by allprograms can be larger than RAM. Use disk asextra memory space.
Virtual memory●●●●●●Virtual memory requires a mapping to physicalmemoryBlock placement: Fully associativeBlock identification: page tableBlock replacement: LRU to minimize page faultsWrite strategy: write-back because disk is slowTranslation look-aside buffer (TLB) used to storerecent translations
Page 1 and 2: Tutorial 11Final Exam Review
Page 3 and 4: Trends in technology●●●Bandwi
Page 5 and 6: Trends in IC cost●Four equations
Page 7 and 8: Locality●A processor spends most
Page 9 and 10: Pipelining●●●Split an instruc
Page 11 and 12: Pipeline hazards●●●Structural
Page 14 and 15: Multicycle operations●The FP pipe
Page 16 and 17: Instruction-level parallelism●●
Page 18 and 19: Loop unrolling●●●●We want t
Page 20 and 21: Dynamic scheduling●Hardware rearr
Page 22 and 23: Tomasulo's algorithm
Page 24 and 25: Speculative Tomasulo(C) 2003 Elsevi
Page 26 and 27: Memory hierarchy●●●●●Memo
Page 28 and 29: Caches●●●●●Block placemen
Page 30 and 31: Caches●●●●Miss rateMulti-le
Page 32 and 33: Cache coherence protocols●●●
Page 36: Final exam● December 9 th at 9am

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Tutorial 11, Final Review - ECSE 425 â Computer Organization and ...