get_global_size
Returns the number of global work-items specified for dimension identified by dimindx.
Description
This value is given by the global_work_size argument to
clEnqueueNDRangeKernel. Valid
values of dimindx are 0 to
get_work_dim() - 1. For
other values of dimindx, get_global_size()
returns 1.
For clEnqueueTask, this
always returns 1.
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