2015 Geodynamo Benchmarking Workshop
Meeting Goals:
I. Present the results of the CIG community dynamo benchmark exercise. From the results of this community exercise, seek to determine how best to develop state-of-the-art community dynamo codes and numerical/theoretical tools that allow for more realistic simulations of dynamo action under core-like conditions.
II. Start community-wide discussion of INCITE project and the numerical simulations to be carried out.
I. Benchmark results
- Typically, 2D decompositions scaled up to 4096 cores, the max available in this study
- Spectrally accurate codes perform well in simplistic benchmark tests, such as the ones carried out here
- For best scaling codes (Calypso, LSD, RaC, SFEMaNS), we need to extend tests to max cores on Stampede (~16k cores),
- Port codes to Mira and see how they scale up to 100k cores and beyond
- Repeat standard benchmark tests
- Weak scaling tests with problem complexity increasing in proportion to resolution
II. INCITE Award
1. Year 1
i. Optimize Rayleigh Code
ii. Carry out Weak scaling performance tests on Mira/CETUS up to 100k+ cores
iii. Survey / performance testing of all three cases (Jovian, Solar, Geo)
iv. Jovian Case: Simultaneous Shallow vortices-Jets/Deep jets/Dynamo
2. Year 2
i. Finish Jovian Hero Case
ii. Solar hero: heat transfer in multi-scale compressible convection
3. Year 3
i. Finish Solar Hero Case
ii. Geodynamo case: large-scale structures in turbulent metal dynamos
4. Output data:
i. Time series
ii. CMB output file
iii. Axisymmetric
iv. Spectral Information:
v. Checkpointing