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WP5 High-Performance Computing Overview

WP5 High-Performance Computing Overview. Helmut Neukirchen (UICE), Shuting Yang (DMI), Thomas Zwinger (CSC). WP5 Subtasks. Workflows/Coupling (UICE), Focus on ESM (DMI), Porting/Optimization (CSC). 2. WP5 General approach. Most WP5 work is rather service on demand:

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WP5 High-Performance Computing Overview

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  1. WP5 High-Performance ComputingOverview Helmut Neukirchen (UICE), Shuting Yang (DMI), Thomas Zwinger (CSC)

  2. WP5 Subtasks • Workflows/Coupling (UICE), • Focus on ESM (DMI), • Porting/Optimization (CSC). 2

  3. WP5 General approach • Most WP5 work is rather service on demand: • Many partners using HPC/eScience in different aspects. • Consulting and collaborating role. • We are not aware of your HPC/eScience problems in your WPs: please contact us! • Transfer of know-how: visits, training (WP6), • Synergies, for instance across ESM’s (WP4), • Build on existing concepts. 3

  4. Need to improve collaboration between WPs • For porting/optimisation of code,visualisation: • Contact Thomas Zwinger @ CSC. • If you have use cases for scientific workflow tools • (=couple existing tools together, start and monitor remote jobs, restarts crashed jobs, join results/copy results between different HPC clusters): • Contact Helmut Neukirchen @ Uni Iceland. 4

  5. UICE in WP5: Workflows/Coupling • Continuing research on coupling Glaciology models. • Based on 2016 presentation in Stockholm: continuation of SVALI work by Dorotheé Vallot (Uni Uppsala) and Thomas Zwinger (CSC). • More in presentation by Shahbaz Memon to follow. • Outlook: • Intended to apply for Dellingr resources for Glacialogy workflow. • See following NeIC presentation for Dellingr and more. • eSTICC use case presented at NeIC meeting next week. • FLEXPART workflows? • Machine learning workflows together with Hannele Korhonen and Antti Lipponen from Finnish Meteorological Institute? 5

  6. UICE in WP5: Publications with eSTICC attribution • Shahbaz Memon, Dorothée Vallot, Thomas Zwinger, and Helmut Neukirchen: Coupling of a continuum ice sheet model and a discrete element calving model using a scientific workflow system, Geophysical Research Abstracts, Vol. 19, EGU2017-8499, EGU General Assembly 2017. • Shahbaz Memon, Gabriele Cavallaro, Morris Riedel, Helmut Neukirchen: Facilitating efficient data analysis of remotely sensed images using standards-based parameter sweep models, 2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), IEEE 2017. • Shahbaz Memon, Morris Riedel, Andrew Grimshaw, Helmut Neukirchen, Matthias Book, Peter Kascuk, Márton István, Ákos Hajnal and Daniel Dougherty: Enabling Scientific Workflow and Gateways using the standards-based XSEDE Architecture, 7th IEEE International Conference on Information & Communication Technologies (ICICT) 2017, IEEE 2017 6

  7. CSC in WP5: Optimization • Started to plan for cooperation with MetNor/Bergen for optimizations in NorESM2/CAM: • CSC earlier managed to significantly increase the speed of idealized lookup tables (Alf Grini). • CSC involved in Intel Parallel Computing Center: • Porting and Optimization work done for Elmer on MICs (Many Integrated Core). • First hands on new CPU generation.

  8. CSC in WP5: Publications • 5 peer reviewed publications including eSTICC acknowledgments since last year: • Gong, Y., T. Zwinger, S. Cornford, R. Gladstone, M. Schäfer, and J.C. Moore, 2016. Importance of basal boundary conditions in transient simulations: case study of a surging marine-terminating glacier on Austfonna, Svalbard, Journal of Glaciology, pp. 1–12, doi:10.1017/jog.2016.121. • Einarsson, B., T. Jóhannesson, T. Thorsteinsson, E. Gaidos, and T. Zwinger, 2017. Subglacial flood path development during a rapidly rising jökulhlaup from the western Skaftá cauldron, Vatnajökull, Iceland, Journal of Glaciology, 1-13, doi:10.1017/jog.2017.33. • Välisuo, I., T. Zwinger and J. Kohler, 2017. Inverse solution of surface mass balance of Midtre Lovénbreen, Svalbard, Journal of Glaciology, 1-10, doi:10.1017/jog.2017.26. • Benn, D.I., J. Åström, T. Zwinger, J. Todd, F.M. Nick, S. Cook, N.R.J. Hulton, and A. Luckman, 2017. Melt-under-cutting and buoyancy-driven calving from tidewater glaciers: new insights from discrete element and continuum model simulations, Journal of Glaciology, 1-12, doi:10.1017/jog.2017.41. • Byckling, M., J. Kataja, M. Klemm and T. Zwinger, 2017. OpenMP SIMD Vectorization and Threading of the Elmer Finite Element Software, Proceedings 13th International Workshop on OpenMP, Springer Lecture Notes,123-137, doi:10.1007/978-3-319-65578-9_9 • 3 more papers in review at peer review journals

  9. WP5 Highlights • Key contribution of WP5: • Enabled resource-intensive climate modelling that would not have been possible without WP5’s HPC porting & optimisation! 9

  10. Presentations in this WP5 session (10:40-12:20) • Shahbaz Memon (UICE/Jülich Supercomputing Centre): Scientific workflows for different data analysis models (20 mins) • Thomas Zwinger (CSC): Code optimization and application support in numerical glaciology (30 mins) • Tomasz Malkiewicz (NeIC): Current and future NEIC project activities (30 mins) • Note: WP5-related presentation of Shuting Yang (DMI) already given in WP4. 10

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