sub_group_reduce

Return result of reduction operation specified for workitems in a sub-group.

gentype sub_group_reduce< op > ( gentype x)

Description

Return result of reduction operation specified by < op > for all values of x specified by workitems in a sub-group.

We use the generic type name gentype to indicate the built-in data types half, int, uint, long, ulong, float or double as the type for the arguments. Type half requires the cl_khr_fp16 extension. Type double is optional.

Specification

OpenCL Specification

Also see

cl_khr_subgroups

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