The Caltech Exemplar

• 256 processors

  • HP PA8000 RISC, running at 180MHz with 1 MByte data cache, 1 MByte instruction cache
  • Grouped into 16 “hypernodes”
  • 720 Mflops peak

• 64 GB of total shared RAM

• Fast communication

  • hypernodes connected by Coherent Toroidal Interconnect (CTI)
  • dedicated ATM link to HEP department
  • dedicated HiPPI link to HPSS

One cabinet = 2 Hypernodes = 32 CPUs

Purchased by Caltech/JPL/NASA

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