Returns the work-group id.
size_t get_group_id(uint dimindx);
Returns the work-group ID which is a number from 0 .. get_num_groups(3clc)(dimindx) - 1. Valid values of dimindx are 0 to get_work_dim(3clc)() - 1. For other values of dimindx, get_group_id() returns 0.
For clEnqueueTask(3clc), this returns 0.
\m[blue]OpenCL Specification\m[]\s-2\u[1]\d\s+2
workItemFunctions(3clc), clEnqueueNDRangeKernel(3clc), clEnqueueTask(3clc)
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OpenCL Specification
page 242, section 6.12.1 - Work-Item Functions