[ Thanks to Nobody for this link.
]
“Does the advent of high-performance, low-latency,
standards-based interconnects put Linux clusters on a more equal
footing with supercomputers?“Paul Terry: Commercial interconnect speeds are
improving, but the fundamental cluster architecture and the PCI
bottleneck still remain. To compete with supercomputers, systems
need to be highly efficient on a broad spectrum of HPC
applications, not just a narrow range of codes with minimal
communications requirements. They need to employ an architecture
that provides high bandwidth, low-latency connections between
processors and memory, across the complete system…”