Much ado about shared-nothing

  • Authors:
  • Michael G. Norman;Thomas Zurek;Peter Thanisch

  • Affiliations:
  • Bloor Research, Bletchley, England,UK;Edinburgh Univ., Scotland,UK;Edinburgh Univ., Scotland,UK

  • Venue:
  • ACM SIGMOD Record
  • Year:
  • 1996

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Abstract

In a 'shared-nothing' parallel computer, each processor has its own memory and disks and processors communicate by passing messages through an interconnect. Many academic researchers, and some vendors, assert that shared-nothingness is the 'consensus' architecture for parallel DBMSs. This alleged consensus is used as a justification for simulation models, algorithms, research prototypes and even marketing campaigns.We argue that shared-nothingness is no longer the consensus hardware architecture and that hardware resource sharing is a poor basis for categorising parallel DBMS software architectures if one wishes to compare the performance characteristics of parallel DBMS products.