ITS: GPU: overlap memcpy with compute kernels #14596
Merged
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This overlaps loading the data on the device for the first iteration for both trackleting and cell finding, almost optimally.

The idea is to start loading the data for the next layer down but compute meanwhile the tracklets for the current layer and one layer above. This just changes the scheduling but not the output. I did not measure the speedup yet but the effect should be clear.