Fat-trees: universal networks for hardware-efficient supercomputing
IEEE Transactions on Computers
Deadlock-Free Routing in InfiniBand through Destination Renaming
ICPP '02 Proceedings of the 2001 International Conference on Parallel Processing
Supporting Fully Adaptive Routing in InfiniBand Networks
IPDPS '03 Proceedings of the 17th International Symposium on Parallel and Distributed Processing
IEEE Transactions on Parallel and Distributed Systems
Analyzing the impact of supporting out-of-order communication on in-order performance with iWARP
Proceedings of the 2007 ACM/IEEE conference on Supercomputing
Supporting OFED over Non-InfiniBand SANs
CCGRID '10 Proceedings of the 2010 10th IEEE/ACM International Conference on Cluster, Cloud and Grid Computing
Designing energy efficient communication runtime systems: a view from PGAS models
The Journal of Supercomputing
Using simulation to explore distributed key-value stores for extreme-scale system services
SC '13 Proceedings of the International Conference on High Performance Computing, Networking, Storage and Analysis
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InfiniBand is becoming increasingly popular in the area of cluster computing due to its open standard and high performance. Fat Tree is a primary interconnection topology for building large scale InfiniBand clusters. Instead of using a shared bus approach, InfiniBand employs an arbitrary switched point-to-point topology. In order to manage the subnet, InfiniBand specifies a basic management infrastructure responsible for discovery, configuration and maintaining the active state of the network. In the literature, simulation studies have been done on irregular topologies to characterize the subnet management mechanism. However, there is no study to model subnet management mechanism on regular topologies using actual implementations. In this paper, we take up the challenge of modeling subnet management mechanism for Fat Tree InfiniBand networks using a popular subnet manager OpenSM. We present the timings for various subnet management phases namely topology discovery, path computation and path distribution for large scale fat tree InfiniBand subnets and present basic performance evaluation on small scale InfiniBand cluster. We verify our model with the basic set of results obtained, and present the results for the model by varying different parameters on Fat Trees.