dma: handle quantization effects on multi-hop hdf5 copies better
dma: handle quantization effects on multi-hop hdf5 copies better

StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion