HELP! * YELLOW=global GREY=local Global HTML version of Foils prepared July 6 1996

Foil 12 Parallel Computer Architecture Issues

From HPCC Current Status: Hardware MPP Trip to China -- July 12-28,96. by Geoffrey Fox * See also color IMAGE
Two critical Issues are:
Memory Structure
  • Distributed
  • Shared
  • Cached
and Heterogeneous mixtures
Control and synchronization
SIMD -lockstep synchronization
MIMD -synchronization can take several forms
  • Simplest: program controlled message passing
  • "Flags" in memory - typical shared memory construct
  • Special hardware - as in cache and its coherency (coordination between nodes)
Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

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