· assume an instruction cache miss rate for gcc is 2% and a data cache ... a 92% hit rate and a...

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Page 1: · Assume an instruction cache miss rate for gcc is 2% and a data cache ... a 92% hit rate and a 2-cycle hit latency, calculate the average memory access latency

Page 2: · Assume an instruction cache miss rate for gcc is 2% and a data cache ... a 92% hit rate and a 2-cycle hit latency, calculate the average memory access latency

Page 3: · Assume an instruction cache miss rate for gcc is 2% and a data cache ... a 92% hit rate and a 2-cycle hit latency, calculate the average memory access latency

Reducing Cache Misses 5.1 Introduction 5.2 The ABCs of Caches 5.3 Reducing Cache Misses 5.4 Reducing Cache Miss Penalty 5.5 Reducing Hit Time 5.6 Main

A Mostly-Clean DRAM Cache for Effective Hit …comparch.gatech.edu/hparch/papers/sim_micro12.pdfA Mostly-Clean DRAM Cache for Effective Hit Speculation and Self-Balancing Dispatch

Cache Opmizaon - Swiss National Supercomputing Centre · D2 cache hit ratio 99.1% L2 cache hit ratio 98.7% Memory to D1 refill 0.666M/sec 2 lines Memory to D1 bandwidth 40.669MB/sec

Suricata Extreme Performance Tuning...miss latency Latency, not a cache misses are a problem for NUMA Local L3 -+ 20ns - Remote L3 - >80ns Local RAM - 96ns, remote 140ns

EVCache: Lowering Costs for a Low Latency Cache … Lowering Costs for a Low Latency Cache ... AWS and tuned for Netflix use ... Access patterns are heavily region-oriented

Bi-Modal DRAM Cache: Improving Hit Rate, Hit Latency and …serc.iisc.ernet.in/~govind/papers/Micro14-NagendraEtAl.pdf · 2017-06-22 · [email protected], [email protected]

Architectures for Wafer-Scale Integration · • Cache stashing to allow accelerators or IO devices to stash critical data within a CPU cache for low latency access. • Far atomic

Fighting latency - events.static.linuxfound.org · L1-dcache-prefetches [Hardware cache event] L1-dcache-prefetch-misses [Hardware cache event] L1-icache-loads [Hardware cache event]

The Locality-Aware Adaptive Cache Coherence …people.csail.mit.edu/devadas/pubs/adaptive-isca.pdfchip cache utilization, exploiting locality using low-latency private caching becomes

Understanding Disk I/O€¦ · Interesting with high cache hit ratio when PEND is significant Avoids delay due to PEND time • Service time for cache hit determined only by CONN

Bi-Modal DRAM Cache: Improving Hit Rate, Hit Latency and ...hpc.serc.iisc.ernet.in/papers/2014/micro14-nagendra.pdf · that stacked DRAM organizations provide, the Bi-Modal Cache

CS 580: Algorithm Design and Analysis · Cache with capacity to store k items. Sequence of m item requests d 1, d 2, …, d m. Cache hit: item already in cache when requested. Cache

Achieving high cache hit ratios for CDN memory …reports-archive.adm.cs.cmu.edu/anon/2016/CMU-CS-16-120.pdfAchieving high cache hit ratios for CDN memory caches with size-aware admission

EC-Cache: Load-Balanced, Low-Latency Cluster Caching with

Caches & Memory - Cornell University · 2020. 1. 8. · L3 Cache. Main Memory. Disk. 16 Some Terminology Cache hit • data is in the Cache • t hit: time it takes to access the

Measuring Cache Performance - Oregon State University · 2012-09-22 · Measuring Cache Performance ! Components of CPU time ! Program execution cycles ! Includes cache hit time !

YEE VANG WEB CACHE. INTRODUCTION Internet has many user Issues with access latency (lag) Server crashing How to solve? One solution, Web Cache

I-sim: An Instruction Cache Simulator · cache (and thus readily available for subsequent accesses), and the update latency is the additional time needed to write the rest ofthe line

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Register Cache System not for Latency Reduction Purpose

Improving database performance with Dell Fluid Cache for SAN€¦ · Oracle Database 12c performance (higher numbers are better) Lower latency with Fluid Cache for SAN means less

Memory Hierarchy - Colorado State Universitycs270/.Spring16/slides/... · 2016-04-17 · Fast: Exploiting Memory Hierarchy — 15 Cache Misses On cache hit, CPU proceeds normally

Cache Performance Metrics Miss Rate Fraction of memory references not found in cache (misses / accesses) = 1 – hit rate Typical numbers (in percentages):

Intel® Celeron® Processor-Based Platforms for Intelligent ...cpop/Documentatie_SMP/Intel...Intel® Smart Cache Technology Large on-die shared last-level cache reduces latency to

COMP303 - Computer Architecturehome.ku.edu.tr/comp303/public_html/Lecture15.pdf · Cache Performance Measures Hit rate: fraction found in the cache So high that we usually talk about

Memory Hierarchy: Cache - Wellesley Collegecs240/s16/slides/cache.pdfAnother puzzle: Cache starts empty, uses LRU. Access (address, hit/miss) stream (10, miss); (12, miss); (10, miss)

Parallel Numerical Simulation€¦ · 7 Cache Memory cache memory: aim: reduce memory access time / latency (CPU performance increased faster than memory access speed) cache memory:

DNS Shotgun - realistic DNS benchmarking€¦ · DNS resolving recap Client Resolver Auth 1 Auth 2 Cache Auth 3? ? cache hit cache miss $ man resperf

EC-Cache Load-balanced, Low-latency Cluster Caching with ... · EC-Cache: Load-balanced, Low-latency Cluster Caching with Online Erasure Coding Joint work with Mosharaf Chowdhury,

Unblindingthe+OS+to+Optimize+ … · Cache+hit Cache+miss Predictable Predictable Small+W Buffer+hit Buffer+miss Predictable ... Actual+Completion (Flag+update:No+IRQ) h Completion#Side

Performance Characteristics of the POWER8 Processor...L3: 96 MB (12 x 8 MB 8 way Bank) •“NUCA” Cache policy (Non-Uniform Cache Architecture) –Scalable bandwidth and latency

Cache performance and memory access patterns · 2020-04-29 · Memory L2 cache. A miss on one level becomes an access at the next level CPU L1 cache Main Memory L2 cache Hit Miss

SmokeBomb: Effective Mitigation Against Cache Side-channel Attacks … · 2020. 7. 10. · Cache side-channel attacks exploit time differences between a cache hit and a cache miss

Cache memory principles - Victor Murray · 2013-06-24 · • Relationship between block size and hit ratio is complex. ... • 80386 – no on chip cache • 80486 – 8k using 16

LHD: Improving Cache Hit Rate by Maximizing Hit Densityhxchen/papers/2018-nsdi-lhd.pdfLeast hit density (LHD) is an eviction policy based on hit density. LHD monitors objects online