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intel-xeon-phi-sw-ecosystem-guide-2h-2015-public3

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Relative Performance<br />

Leverage Code Resources<br />

Code Modernization benefits both the Processor & the Coprocessor<br />

2S Xeon E5-2697 v2 (Original Parallel) 2S Xeon E5-2697 v2 (Optimized) 2S Xeon E5-2697 v2 + 1 Xeon Phi 7120A (Optimized)<br />

5<br />

4<br />

3<br />

2<br />

1<br />

0<br />

Code Modernization results in<br />

significant improvements for both the<br />

processor and the coprocessor<br />

Original<br />

Parallel Code<br />

(Xeon Only)<br />

1.7X 2.22<br />

3.43X<br />

1.70<br />

Optimized<br />

1 Optimized<br />

Code<br />

1<br />

Code<br />

(Xeon +<br />

(Xeon Only)<br />

Xeon Phi)<br />

Amber 14 Cellulose NPT<br />

Original<br />

Parallel Code<br />

(Xeon Only)<br />

3.43<br />

Optimized<br />

Code<br />

(Xeon Only)<br />

LAMMPS Liquid Crystal<br />

5.07<br />

Optimized<br />

Code<br />

(Xeon +<br />

Xeon Phi)<br />

Xeon = Intel® Xeon® processor<br />

Xeon Phi = Intel® Xeon Phi coprocessor<br />

Code Optimizations<br />

- Reduce host data xfer<br />

- Better data decomp. between CPU & Card<br />

- Better parallellization<br />

- Better OpenMP sched.<br />

Code Optimizations<br />

- Better Vectorization<br />

- Mixed Precision support<br />

- Misc changes for better<br />

parallelization<br />

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,<br />

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<br />

purchases, including the performance of that product when combined with other products. For more information go to http://www.intel.com/performance *Other names and brands may be claimed as the property of others.<br />

12

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