Abstract
Multicore processors have not only reintroduced Non-Uniform Memory Access (NUMA) architectures in nowadays parallel computers, but they are also responsible for non-uniform access times with respect to Input/Output devices (NUIOA). In clusters of multicore machines equipped with several network interfaces, performance of communication between processes thus depends on which cores these processes are scheduled on, and on their distance to the Network Interface Cards involved. We propose a technique allowing multirail communication between processes to carefully distribute data among the network interfaces so as to counterbalance NUIOA effects. We demonstrate the relevance of our approach by evaluating its implementation within Open MPI on a Myri-10G + InfiniBand cluster.
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References
Moreaud, S., Goglin, B.: Impact of NUMA Effects on High-Speed Networking with Multi-Opteron Machines. In: The 19th IASTED International Conference on Parallel and Distributed Computing and Systems (PDCS 2007), Cambridge, Massachussetts (2007)
Buntinas, D., Goglin, B., Goodell, D., Mercier, G., Moreaud, S.: Cache-Efficient, Intranode Large-Message MPI Communication with MPICH2-Nemesis. In: Proceedings of the 38th International Conference on Parallel Processing (ICPP-2009), Vienna, Austria, pp. 462–469. IEEE Computer Society Press, Los Alamitos (2009)
Narayanaswamy, G., Balaji, P., Feng, W.: Impact of Network Sharing in Multi-core Architectures. In: Proceedings of the IEEE International Conference on Computer Communication and Networks (ICCCN), St. Thomas, U.S. Virgin Islands (2008)
Jang, H.C., Jin, H.W.: MiAMI: Multi-core Aware Processor Affinity for TCP/IP over Multiple Network Interfaces. In: Proceedings of the 17th Annual Symposium on High-Performance Interconnects (HotI 2009), New York, NJ, pp. 73–82 (2009)
Rabenseifner, R., Hager, G., Jost, G.: Hybrid MPI/OpenMP Parallel Programming on Clusters of Multi-Core SMP Nodes. In: Proceedings of the 17th Euromicro International Conference on Parallel, Distributed, and Network-Based Processing (PDP 2009), Weimar, Germany, pp. 427–436 (2009)
Mercier, G., Clet-Ortega, J.: Towards an Efficient Process Placement Policy for MPI Applications in Multicore Environments. In: Ropo, M., Westerholm, J., Dongarra, J. (eds.) Recent Advances in Parallel Virtual Machine and Message Passing Interface. LNCS, vol. 5759, pp. 104–115. Springer, Heidelberg (2009)
Gabriel, E., Fagg, G.E., Bosilca, G., Angskun, T., Dongarra, J.J., Squyres, J.M., Sahay, V., Kambadur, P., Barrett, B., Lumsdaine, A., Castain, R.H., Daniel, D.J., Graham, R.L., Woodall, T.S.: Open MPI: Goals, concept, and design of a next generation MPI implementation. In: Proceedings of 11th European PVM/MPI Users’ Group Meeting, Budapest, Hungary, pp. 97–104 (2004)
Mercier, G., Trahay, F., Buntinas, D., Brunet, É.: NewMadeleine: An Efficient Support for High-Performance Networks in MPICH2. In: Proceedings of 23rd IEEE International Parallel and Distributed Processing Symposium (IPDPS 2009), Rome, Italy. IEEE Computer Society Press, Los Alamitos (2009)
Broquedis, F., Clet-Ortega, J., Moreaud, S., Furmento, N., Goglin, B., Mercier, G., Thibault, S., Namyst, R.: hwloc: a Generic Framework for Managing Hardware Affinities in HPC Applications. In: Proceedings of the 18th Euromicro International Conference on Parallel, Distributed and Network-Based Processing (PDP 2010), Pisa, Italia. IEEE Computer Society Press, Los Alamitos (2010)
Aumage, O., Brunet, E., Mercier, G., Namyst, R.: High-Performance Multi-Rail Support with the NewMadeleine Communication Library. In: Proceedings of the Sixteenth International Heterogeneity in Computing Workshop (HCW 2007), held in conjunction with IPDPS 2007, Long Beach, CA (2007)
Pellegrini, S., Wang, J., Fahringer, T., Moritsch, H.: Optimizing MPI Runtime Parameter Settings by Using Machine Learning. In: Ropo, M., Westerholm, J., Dongarra, J. (eds.) Recent Advances in Parallel Virtual Machine and Message Passing Interface. LNCS, vol. 5759, pp. 196–206. Springer, Heidelberg (2009)
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Moreaud, S., Goglin, B., Namyst, R. (2010). Adaptive MPI Multirail Tuning for Non-uniform Input/Output Access. In: Keller, R., Gabriel, E., Resch, M., Dongarra, J. (eds) Recent Advances in the Message Passing Interface. EuroMPI 2010. Lecture Notes in Computer Science, vol 6305. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-15646-5_25
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DOI: https://doi.org/10.1007/978-3-642-15646-5_25
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