'Row buffer' diaporamas de présentation

Memory Hierarchy

Memory Hierarchy. Outline. Random-Access Memory (RAM) Nonvolatile Memory Disk Storage Locality Memory hierarchy Suggested Reading: 6.1, 6.2, 6.3. Nonvolatile: ????. 6.1 Storage Technologies. 6.1.1 Random-Access Memory. Random-Access Memory (RAM). Key features

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Exploiting Locality in DRAM

Exploiting Locality in DRAM. Xiaodong Zhang Ohio State University Collaborations with Zhao Zhang (Iowa State University) Zhichun Zhu (University of Illinois at Chicago). Where is Locality in DRAM?. DRAM is the center of memory hierarchy: High density and high capacity

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Exploiting Locality in DRAM

Exploiting Locality in DRAM. Xiaodong Zhang College of William and Mary. Where is Locality in DRAM?. DRAM is the center of memory hierarchy: High density and high capacity Low cost but slow access (compared to SRAM)

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Achieving High Performance and Fairness at Low Cost

The Blacklisting Memory Scheduler. Achieving High Performance and Fairness at Low Cost. Lavanya Subramanian , Donghyuk Lee, Vivek Seshadri , Harsha Rastogi , Onur Mutlu. Main Memory Interference Problem. Core. Core. Main Memory. Core. Core.

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IA32 Floating Point

IA32 Floating Point. History 8086: first computer to implement IEEE FP separate 8087 FPU (floating point unit) 486: merged FPU and Integer Unit onto one chip Summary Hardware to add, multiply, and divide Floating point data registers Various control & status registers

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A Case for Subarray -Level Parallelism (SALP) in DRAM

A Case for Subarray -Level Parallelism (SALP) in DRAM. Yoongu Kim , Vivek Seshadri , Donghyuk Lee, Jamie Liu, Onur Mutlu. Executive Summary. Problem : Requests to same DRAM bank are serialized Our Goal : P arallelize requests to same DRAM bank at a low cost

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Application-Aware Memory Channel Partitioning

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The Memory Hierarchy Feb. 20, 2003

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The Memory Hierarchy

The Memory Hierarchy. Today Storage technologies and trends Locality of reference Caching in the memory hierarchy Next time Cache memory. Random-Access Memory (RAM). Key features RAM is packaged as a chip. Basic storage unit is a cell (one bit per cell).

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Trading Cache Hit Rate for Memory Performance

Trading Cache Hit Rate for Memory Performance. Wei Ding, Mahmut Kandemir , Diana Guttman , Adwait Jog, Chita R. Das, Praveen Yedlapalli The Pennsylvania State University. Summary. Problem

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CSE 502: Computer Architecture

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CSE 502: Computer Architecture

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Lecture 7: Caching in Row-Buffer of DRAM

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Lecture: DRAM Main Memory

Lecture: DRAM Main Memory. Topics: virtual memory wrap-up, DRAM intro and basics (Section 2.3). TLB and Cache. Virtually Indexed Caches. 24-bit virtual address, 4KB page size ? 12 bits offset and 12 bits virtual page number

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A Row Buffer Locality-Aware Caching Policy for Hybrid Memories

A Row Buffer Locality-Aware Caching Policy for Hybrid Memories. HanBin Yoon Justin Meza Rachata Ausavarungnirun Rachael Harding Onur Mutlu. Overview. Emerging memories such as PCM offer higher density than DRAM, but have drawbacks Hybrid memories aim to achieve best of both

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Evaluating STT-RAM as an Energy-Efficient Main Memory Alternative

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Lecture: DRAM Main Memory

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Lecture 4: Memory Scheduling, Refresh

Lecture 4: Memory Scheduling, Refresh. Topics: scheduling policies, refresh basics. Scheduling Policies Basics. Must honor several timing constraints for each bank/rank Commands: PRE, ACT, COL-RD, COL-WR, REF, Power-Up/Dn Must handle reads and writes on the same DDR3 bus

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Lecture 15: DRAM Main Memory Systems

Lecture 15: DRAM Main Memory Systems. Today: DRAM basics and innovations (Section 2.3). Memory Architecture. Processor. Bank. Row Buffer. Memory Controller. Address/Cmd. DIMM. Data. DIMM: a PCB with DRAM chips on the back and front

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Lecture 23: Cache, Memory, Security

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