From TeraGrid Wiki
PI: P.K. Yeung
Field: CFD, Turbulence
Current Max Scaling: 32K cores on Ranger
Member of CUAC.
Current Status (in reverse chronological order):
Good scaling on ranger; going from 16K cores 32K cores, the efficiency was 98%.
However currently there are some issues with variability in timings. In some cases it can be as much as an order of magnitude.
Information that needs to be added:
What were the hurdles in scaling up and how they were overcome:
The code decomposition was changed from slab decomposition to pencil decomposition.