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cunumeric is currently missing np.flipupd, np.fliplr, and np.select and falls back to CPU numpy for these operations resulting in copies from GPU to CPU for each operation. 

Additionally this loop is problematic for cunumeric performance: https://github.com/slac-lcls/lcls2/blob/cunumeric/psana/psana/detector/UtilsAreaDetector.py#L98

Default Corrections 7 ranks

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