My application uses a 2D kernel that is called several times on different data. Running the code builder profiler, I got a lot of the following perfromance hints (on Intel HD 4600, Windows 10, Intel SDK for OpenCL Applications 2016 R3 ):
Performance hint: Null local workgroup size detected (kernel name: cellRasterize); following sizes will be used for execution: { 20, 22, 1 }
Performance hint: Null local workgroup size detected (kernel name: cellRasterize); following sizes will be used for execution: { 26, 16, 1 }
Performance hint: Null local workgroup size detected (kernel name: cellRasterize); following sizes will be used for execution: { 12, 12, 1 }
...
What does it mean? Many Thanks in advance!
Matteo.
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