Könyv User Modeling of Parallel Workloads David Talby

User Modeling of Parallel Workloads

Predicting and Optimizing the Use of Parallel Computers

Szerző: David Talby
Nyelv: Angol
Kötés: Puha kötésű
Kiadó: VDM Verlag
Elérhetőség: Beszállítói készleten
Küldés 9-15 napon belül
22 703 Ft
The goal of workload modeling is to predict a §computer s workload well enough to design it §correct...

Információk a könyvről

Szerző
Nyelv
Angol
Kötés
Könyv - Puha kötésű
Kiadva
2009
oldal
132
EAN
9783639142952
ISBN
3639142950
Enbook ID
06822906
Kiadó
Súly
204
Méretek
152 x 229 x 8

Teljes leírás

The goal of workload modeling is to predict a §computer s workload well enough to design it §correctly. A poor model will lead to degraded §performance and user satisfaction. Analyzing logs §from multiple real parallel computers uncovers §several statistical features locality of sampling, §daily cycles, weekly cycles, self similarity and §flurries that are missing from current workload §models. Their practical importance is demonstrated §by two new kinds of scheduling algorithms adaptive §scheduling and shortest job backfill first §scheduling which achieve an average 10% bottom-§line performance gain and 35% stability gain on the §production workloads.§§The second part of this book presents a user based §workload model. It identifies four stable user types §and five stable session types. It then deduces model §parameters, the distributions of the arrival and §activity patterns for both users and sessions, their §dependencies and temporal structure. The methodology §and statistical toolset is explained to make it §easier to reuse in other domains.§§The insights and practical advice provided will be §of use to anyone building or operating a large-scale §parallel computer.

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