N=1600x0800L=8000zi000da=4.40E-04f0.000      
           a=  1.0000 step=       0 Nrow=    1600 Ngrid=    800
 NROW   =      1600
 Ngal   =4096000000
 Ngrid  =       800
 Box    =    8000.0
 Current Memory =   45.777Gb
 Current Memory =   91.554Gb
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