The weather vertical needs a tremendous amount of compute capabilities to accurately predict weather all over the world, including the formation of tornados, the direction of a hurricane, and rain fall predictions. Weather Research and Forecasting (WRF) is one of the more frequently used weather simulation packages.
Intel measured as of May 2014
Hardware: Two-socket server with Intel® Xeon® processor E5-2697 v2 (12C, 2.7 GHz, 130 W), each node equipped with one Intel® Xeon Phi™ coprocessor (7120 c0, 61 core, 1.238 GHz, 16 GB at 5.5 GT/s) in a four-node Fourteen Data Rate (FDR) cluster.
WRF is available from the US National Center for Atmospheric Research in Boulder, Colorado; it is available from http://www.wrf-model.org/.
Intel® Manycore Platform Software Stack (Intel® MPSS) 6720-16, Compiler rev 192, Intel® MPI Library rev 3.6
WRF CONUS2.5km workload available from http://www.mmm.ucar.edu/wrf/WG2/bench/.
Performance comparison is based upon average timestep. We ignore initialization and post simulation file operations.
Conus2.5km run ATS KNC "Profit" % 4x12x2-20+0x0x0-0 2.224642 4x12x2-20+4x8x30-30 1.425497 56.06079844
Modifications: -DINTEL_ALIGN64 - removed from AVX version; -fp-model fast=1 -> fast=2
1 2 3 4 5 6 7 8
For the equation above, 1 corresponds to the first number in the equation, 2 corresponds to the second, etc. Below is the legend for what each number represents.
1 number of nodes
2 number of ranks on the host
3 number of OMP threads/rank
4 number of tiles
5 number of KNC cards
6 number of MPI ranks/card
7 number of OMP threads/rank
8 number of tiles
Source: Intel Internal Testing TR2054
Additional information: 1 2 3 4 5
Software and workloads used in performance tests may have been optimized for performance only on Intel® microprocessors. Performance tests, such as SYSmark and MobileMark, are measured using specific computer systems, components, software, operations, and functions. Any change to any of those factors may cause the results to vary. You should consult other information and performance tests to assist you in fully evaluating your contemplated purchases, including the performance of that product when combined with other products. For more information, go to www.intel.com/performance.
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Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel® microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product user and reference guides for more information regarding the specific instruction sets covered by this notice.
Notice revision #20110804
Different hardware architectures may require different source code. Results are based on Intel’s best efforts to use code optimized to run on all architectures and perform the same work. Future code optimizations may result in different results.
Microprocessor-dependent optimizations in this product are intended for use with Intel® microprocessors. Certain optimizations not specific to Intel® microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product user and reference guides for more information regarding the specific instruction sets covered by this notice.
Notice revision #20110804