Presentation Jonker - Clouds and Computing
- 1. Challenge the future Delft University of Technology Clouds and Computing Harm Jonker Department GeoScience and Remote Sensing
- 2. Clouds in Weather and Climate • Hydrological cycle • Radiation balance
- 3. Landsat 65km LES 10km ~mm ~100m~1µm-100µm Earth 107 m
- 4. Landsat 5 satellite picture 65km; resolution 30m
- 5. ~ 100km LES 10km ~mm ~100m~1µm-100µm Earth 107 m
- 6. ~ 100km LES 10km ~mm ~100m~1µm-100µm Earth 107 m DALES: Dutch Atmospheric Large Eddy Simulation TUD, KNMI, WUR, IMAU, ...
- 7. Local workflow! Editing simulation settings Interaction while simulating! High-Performance Simulations of Turbulent Clouds on a Desktop PC: Exploiting the GPU Schalkwijk, Griffith, Post & Jonker March 2012
- 8. GCM-scale cloud-scale large scale forcings. parameterised -warmer sea, -subsidence
- 10. Schalkwijk, Jonker, Siebesma, JAS 2013 (under review) subsidence: (large scale circulation) Cloud Response (in these particular settings) EUCLIPSE project
- 11. subsidence: (large scale circulation) Schalkwijk, Jonker, Siebesma, JAS 2013 (under review) Cloud Response (in these particular settings)
- 13. The KNMI Testbed Embedded in a Large-Scale Weather model GALES icw Neggers, Siebesma, v. Meijgaard Cabauw
- 16. The KNMI Testbed Preliminary comparison with observations 0 12 24 Cloud cover Average diurnal cycle over 22 ‘cumulus days’ Hour of day 30% 20% 10% 0% Promising results for cumulus days…. Observations Simulated observations
- 17. Increasing the problem size Multi-GPU simulations
- 18. Satellite image
- 19. 256 coupled GPUs (130 000 CUDA cores), 400x400x12km (40962x190 grid boxes) GALES: MULTI-GPU PRACE: CURIE courtesy: Jerome Schalkwijk
- 20. HD(CP)2: High Definition Clouds and Precipitation for Climate Prediction 16 German institutes, 50 pd/PhDs
- 21. 0.25 1 4 16 64 256 1024 4096 16384 65536 0.25 1 4 16 64 256 1024 4096 16384 65536 #GPUs "speedup" Weak scaling properties Oak Ridge 5000x5000km Curie 409x409km Curie 204x204km Perfect Scaling CURIE Oak Ridge? Dream on …. (we have the technology) What if we just had the facilities …
- 22. Combine with Radiation calculations courtesy Johan vd Dussen, Jerome Schalkwijk
- 23. Sustainable Energy Prediction and Management Tool courtesy Stephan de Roode
- 24. accurate observations (remote sensing) e.g. Russchenberg et al. e.g. Hanssen et al. humidity fields from InSAR (100kmx100km) High resolution Data Assimilation
- 25. Schalkwijk et al, BAMS 2012. Boing et al. JAS 2012
- 26. geo-engineering