Benchmarks at CyberInfrastructure Partnership

• What is CIP Benchmarks?
• Application Benchmarks
  • GAMESS
  • MILC
  • NAMD
  • PARATEC
  • WRF
• Synthetic Benchmarks
  • HPCC
  • IOR
• Computing Resources

WRF

“WRF (Weather Research and Forecast) is a weather modeling system developed at NCAR. WRF is an MPI code with optional OpenMP capabilities for some platforms. It uses an underlying communication layer, called RSL or RSL Lite, to perform the domain decomposition. “ [TI-06]

WRF Version 2 was used for the benchmarks. The two problems considered are those in the TI-06 benchmark set.

Standard:	48-hour CONUS (Continental US) simulation, 12-km spatial resolution in the horizontal dimensions, 425 x 300 horizontal grid with 34 vertical levels.
Large:	48-hour CONUS (Continental US) simulation, 5-km spatial resolution in the horizontal dimensions, 1010 x 720 horizontal grid with 38 vertical levels.

The table lists run times on the various computers for both problem sizes. The plots show the same results converted to relative speeds per processor in strong scaling scans.

Cobalt is the fastest computer at all of the processor counts shown. However, DataStar exhibits the best scaling because of its high-performance, custom switch. Thus DataStar is faster than Mercury and T2 at high processor counts, even though it is slower at low processor counts.