Scalable Interconnects

• Problem is interconnect: cost (crossbar) or bandwidth (bus)

  • Hypercube was an attempt at compromise between these two

• Dance-hall: bandwidth still scalable, but lower cost than crossbar

  • latencies to memory uniform, but uniformly large

• Distributed memory or non-uniform memory access (NUMA)

  • Construct shared address space out of simple message transactions across a general-purpose network (e.g. read-request, read-response)

• Caching shared (particularly nonlocal) data?

Previous slide

Next slide

Back to first slide

View graphic version