2011 IEEE International Symposium on Parallel and Distributed Processing Workshops and Phd Forum (2011)
Anchorage, Alaska USA
May 16, 2011 to May 20, 2011
Cielo, a Cray XE6, is the Department of Energy NNSA Advanced Simulation and Computing (ASC) campaign's newest capability machine. Rated at 1.37 PFLOPS, it consists of 8,944 dual-socket oct-core AMD Magny-Cours compute nodes, linked using Cray's Gemini interconnect. Its primary mission objective is to enable a suite of the ASC applications implemented using MPI to scale to tens of thousands of cores. Cielo is an evolutionary improvement to a successful architecture previously available to many of our codes, thus enabling a basis for understanding the capabilities of this new architecture. Using three codes strategically important to the ASC campaign, and supplemented with some micro-benchmarks that expose the fundamental capabilities of the XE6, we report on the performance characteristics and capabilities of Cielo.
M. Rajan, D. Doerfler, K. Pedretti, R. Barrett and C. Vaughan, "Investigating the Impact of the Cielo Cray XE6 Architecture on Scientific Application Codes," 2011 IEEE International Symposium on Parallel and Distributed Processing Workshops and Phd Forum(IPDPSW), Anchorage, Alaska USA, 2011, pp. 1831-1837.