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Different performance between Intel C++ Compiler 11 and Intel C++ Compiler 14

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Hi all,

I have some problems with my source code, when I build it with Intel C++ Compiler 11 and Intel C++ Compiler 14. The difference is showed at the table below:


  Intel Compiler 11 Intel Compiler 14 Original source (ms) 120 110 Optimized source (ms) 100 110

With:

+ Original source: I use many variables to store data and calculate on it.

+ Optimized source: I use a struct to store variables on original source and vectorize my calculations. Moreover, I have removed some redundant calculations.

I don't know the reason for this difference between two sources above.

Please help me explain this difference ?

Tam Nguyen

 


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