To set a performance baseline for the improvements that follow in this tutorial, build your project with these settings:
Select Project > Properties. The project property pages window appears.
Select Configuration Properties> C/C++> Optimization .
For Optimization, select Minimum Size(/O1) from the dropdown list.
For Interprocedural Optimization, select No.
Select Configuration Properties > C/C++ > Language [Intel C++].
For Enable C99 Support, select Yes.
This example uses a variable length array (VLA), and therefore, must be compiled with the /Qstd=c99 option.
Select Configuration Properties > C/C++ > Code Generation.
For Floating Point Model, select Fast (/fp:fast).
The /fp:precise option sets the compiler to aggressively optimize floating point arithmetic operations. Using the /fp:precise or /fp:strict options may limit opportunities for auto vectorization.
Rebuild the project, then run the executable (Debug > Start Without Debugging). Record the execution time reported in the output. This is the baseline against which subsequent improvements will be measured.
