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- W2125536704 abstract "Future supercomputers with millions of processors would pose significant challenges in their interconnection networks due to difficulty in design constraints such as space, cable length, cost, power consumption, etc. Instead of huge switches or bisection bandwidth restricted topologies such as a torus, we propose a network which utilizes both fully-connected lower-bandwidth electronic packet switching (EPS) network and low-power optical circuit switching (OCS) network. Optical circuits, connected sparingly to only a limited set of nodes to conserve power and cost, are used in a supplemental fashion as shortcut routes only when a node communicates substantially across EPS switches, while short latency communication is handled by EPS only. Our MPI inter-node communication algorithm accommodates for such a network by appropriate scheduling of nodes according to application communication patterns, in particular utilizing relatively high EPS local switch bandwidth to forward messages to nodes with optical connections for shortcutting in order to maximize overall throughput. Simulation studies confirm that our proposal effectively avoids contentions in the network in high-bandwidth applications with nominal additions of optical circuitry to existing machines." @default.
- W2125536704 created "2016-06-24" @default.
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- W2125536704 date "2008-04-01" @default.
- W2125536704 modified "2023-09-24" @default.
- W2125536704 title "Locality aware MPI communication on a commodity opto-electronic hybrid network" @default.
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- W2125536704 doi "https://doi.org/10.1109/ipdps.2008.4536343" @default.
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