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SUMMARY:Jekyll & Hyde: a heterogeneous key-value store. 
DTSTART:20120619T100000
DTEND:20120619T110000
DTSTAMP:20260407T101137Z
UID:d511d5fbd584347d45928886be6c1ae50ee293768de57904288e8ace
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Dushyanth Narayanan\, Microsoft Research Cambridge\nAbstra
 ct:\nData center hardware is about to get very heterogeneous in terms of C
 PUs\, interconnects\, and memory because of developments like ARM-based mi
 croservers\, custom network fabrics\, and hybrid memory cubes all on the h
 orizon. What does this imply for systems design especially for cloud infra
 structures?\nIn this talk I will describe our recent work on “Jekyll and
  Hyde”: an in-memory key-value store for asymmetric clusters. The store 
 consists of two in-memory replicas: Jekyll and Hyde. “Jekyll” is a sin
 gle big memory  server (192 GB in our prototype) that holds one of the re
 plicas.  “Hyde” is a larger number of lower-power machines across whi
 ch the second replica is sharded. In our prototype we use a cluster of old
 er-generation Intel processors but these could also  be ARM or Atom-based
  microservers.   By directing transactions and random-access queries to 
 the Jekyll and parallelizable scan-based analytics to the Hyde\, we levera
 ge the strengths of each. The transactional workload benefits from the cac
 he coherence and fast interconnect of the Jekyll\, while the analytics ben
 efit from the high aggregate bandwidth of the Hyde. An additional benefit 
 is that the scan workloads do not compete for memory bandwidth or pollute 
 the cache of the transactional workloads.\nIf time permits I’ll then tal
 k briefly about our ongoing work on locality-preserving partitioning.\n\nB
 io:\nDushyanth Narayanan is a researcher in the Systems and Networking gro
 up at Microsoft Research Cambridge. He has worked on mobile computing\, st
 orage\, energy-efficiency\, and most recently in data center and cloud arc
 hitectures.
LOCATION:BC 01 https://plan.epfl.ch/?room==BC%2001
STATUS:CONFIRMED
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