WRF V2 12km CONUS Benchmark Results, May 15, 2006

NOTES:

1.      All results provided by vendors except some IBM results, indicated by (NCAR). The NCAR results were run on the NCAR Bluevista (IBM Power 5) system

a.       IBM (Vendor) Results

                                                               i.      OS: 64-bit AIX 5.3 Kernel, SMT and Large 64KB pages enabled

                                                             ii.      Compiler: XLF Fortran 10.1, Optimization level: -O3 –qhot

                                                            iii.      Processor: Power5 1.9 GHz

                                                           iv.      Interconnect: dual-link HPS (Federation)

b.      IBM (NCAR) Results

                                                               i.      OS: 64-bit AIX 5.2 Kernel

                                                             ii.      Compiler: XLF Fortran 9.1, Optimization level: -O2

                                                            iii.      Processor: Power5 1.9 GHz

                                                           iv.      Other attributes equivalent to above.

c.       SGI Results (original)

                                                               i.      OS: Linux

                                                             ii.      Compiler: Intel Fortran

                                                            iii.      Processor: Itanium2, 1.6 GHz, 6MB/9MB L3 Data Cache (best results) shown

                                                           iv.      NUMA link

d.      SGI Results (improved; same configuration as above but with vendor developed tuning that will be reviewed and, as appropriate, included in next release of WRF)

e.       Cray Results

                                                               i.      OS: Linux

                                                             ii.      Compiler: PGI 6.1.3

                                                            iii.      Processor: AMD Opteron (single core), 2.6 GHz

                                                           iv.      Interconnect: ??

f.        HP (Vendor) Superdome

                                                               i.      OS: Linux (RHEL 4.0 Update 5)

                                                             ii.      Compiler: ifort 10.0

                                                            iii.      Intel Montecito 1.6 GHz 12MB/L3

                                                           iv.      Results submitted by Logan Sankaran, Dec. 2007

2.      Model versions:

a.       WRFV2.1.1, November 8, 2005

b.      WRFV2.1.2+, April, 2006 (WRFV2.1.2 plus other mid-release updates)

3.      Physics options

a.       Microphysics: WSM5

b.      Cumulus: Grell/Devenyi

c.       Long-wave: RRTM (30 minute)

d.      Short-wave: Dudhia (30 minute)

e.       PBL: YSU

f.        Surface Layer: SLAB/SLAB