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|Home > The kernel auto-vectorizer and unroller > Kernel unroller options > Kernel unroller command and parameters|
The format of the kernel unroller options is:
|dimension||This 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.