As a default all variables except local function variables and loop iterators are add to

When using OpenMP variables behave as follows:

How global variables usage affects?

To know what variables could be used inside the block, it is necessary to estimate:

May four different variables became components of the same vector after the vectorization?

What is loop parallelizing function in Intel compiler?

What is passed as an argument to loop parallelizing function in Intel compiler?

What is loop peeling?

Loop vectorization is

What is loop unrolling for?

Loop optimizations are: