Support for multiple classes of traffic in multicomputer routers

Rexford, Jennifer; Shin, Kang G.

doi:10.1007/3-540-58429-3_32

Cited by 27 publications

(12 citation statements)

References 22 publications

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“…For example, Fig. 2 specifies an 8-ary 2-cube (8 × 8 torus) network that carries a mixture of time-constrained and besteffort traffic, with different traffic patterns, performance metrics, and network policies [12], [34]. The input specification file includes "task" blocks to define the communication workload, routing-switching algorithm, and performance metric for each traffic class.…”

Section: Input Specificationmentioning

confidence: 99%

“…As a result, several studies have used pp-mess-sim to evaluate the PRC and the v-router models under various routingswitching schemes, network topologies, and application workloads [3], [4], [12], [31], [34], [42], [43], [44]. This section presents the results of sample pp-mess-sim experiments that consider the interaction of routing-switching algorithms and communication patterns.…”

Section: Simulation Experimentsmentioning

confidence: 99%

See 1 more Smart Citation

pp-mess-sim: a flexible and extensible simulator for evaluating multicomputer networks

Rexford

Feng

Dolter

et al. 1997

IEEE Trans. Parallel Distrib. Syst.

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Abstract-This paper presents pp-mess-sim, an object-oriented discrete-event simulation environment for evaluating interconnection networks in message-passing systems. The simulator provides a toolbox of various network topologies, communication workloads, routing-switching algorithms, and router models. By carefully defining the boundaries between these modules, pp-mess-sim creates a flexible and extensible environment for evaluating different aspects of network design. The simulator models emerging multicomputer networks that can support multiple routing and switching schemes simultaneously; ppmess-sim achieves this flexibility by associating routing-switching policies, traffic patterns, and performance metrics with collections of packets, instead of the underlying router model. Besides providing a general framework for evaluating router architectures, ppmess-sim includes a cycle-level model of the PRC, a programmable router for point-to-point distributed systems. The PRC model captures low-level implementation details, while another high-level model facilitates experimentation with general router design issues. Sample simulation experiments capitalize on this flexibility to compare network architectures under various application workloads.

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Section: Input Specificationmentioning

confidence: 99%

Section: Simulation Experimentsmentioning

confidence: 99%

pp-mess-sim: a flexible and extensible simulator for evaluating multicomputer networks

Rexford

Feng

Dolter

et al. 1997

IEEE Trans. Parallel Distrib. Syst.

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show abstract

“…Fundamentally, sharing resources and giving guarantees are conflicting, and effi ciently combining guaranteed throughput (GT) traffi c with best-effort (BE) traffi c is hard [10]. By using dedicated techniques for both types of traffi c we try to reduce the total area and power consumption.…”

Section: Network-on-chip Architecturementioning

confidence: 99%

Energy-efficient NoC for best effort communication

Wolkotte

Smit

Becker³

International Conference on Field Programmable Logic and Applications, 2005.

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A Network-on-Chip (NoC) is an energy-efficient on-chip communication architecture for Multi-Processor System-onChip (MPSoC) architectures. In an earlier paper we proposed a energy-efficient reconfigurable circuit-switched NoC to reduce the energy consumption compared to a packetswitched NoC. In this paper we investigate a chordal slotted ring and a bus architecture that can be used to handle the best-effort traffic in the system and configure the circuitswitched network. Both architectures are compared on their latency behavior and power consumption. At the same clock frequency, the chordal ring has the major benefit of a lower latency and higher throughput. But the bus has a lower overall power consumption at the same frequency. However, if we tune the frequency of the network to meet the throughput requirements of control network, we see that the ring consumes less energy per transported bit.

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“…Several researchers compared the performance of virtual cut-through and wormhole switching, assuming the simplest configuration for each router: deterministic routing and no virtual channels [1,17]. Assuming that clock frequency is the same for both routers, the results show that both switching techniques achieve the same latency for low loads.…”

Section: Introductionmentioning

confidence: 99%

“…However, wormhole switching quickly saturates as load increases due to blocked packets remaining in the network and keeping the resources previously reserved. Virtual cut-through achieves a much higher throughput at the cost of increased buffer capacity [17].…”

Section: Introductionmentioning

confidence: 99%