Clarification on the definition of max_num_sub_groups

[AD2605]

The SYCL specification defines the info::kernel_device_specific::max_num_sub_groups as -

Returns the maximum number of sub-groups for this kernel

Is this the maximum possible number of subgroups in a workgroup ?

Would it be possible to clarify this is a bit further, as from my understanding, it's not immediately clear what max_num_sub_groups would be returning

[gmlueck]

I believe this corresponds to the OpenCL query CL_KERNEL_MAX_NUM_SUB_GROUPS. The description there is longer, but I'm not sure it is more clear.

I think this query returns the number of sub-groups you would get if you launched the kernel with the largest possible work-group size, as determined by info::kernel_device_specific::work_group_size / CL_KERNEL_WORK_GROUP_SIZE.