Caching look up table (LUT) in work-group local memory #4
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Harpocrates SYCL kernels can now process input
because often accessed (inverse) look up table (LUT) is first explicitly cached in work-group local memory, which makes it cheaper to access for all work-items of certain work-group. Work-group leader takes up the responsibility of explicitly copying look up table ( of 256 -bytes ) to faster work-group local memory & until that operation is finished all other work-items wait for work-group leader.