10.3.1 Kernel unroller command and parameters

The format of the kernel unroller command is:

-fkernel-unroller= <dimension><factor>

The parameters are:

dimensionThis selects the dimension along which to unroll.

This is the number of neighboring work-items that are merged.

The performance gain from unrolling depends on your kernel and the unrolling factor, so experiment to see what suits your kernel. It is typically best to keep the unroll factor at eight or below.

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