on rank 0: END of TEST A
on rank 0: numfiles       =      1 , -1
on rank 0: chunksize      =      100 , 100
on rank 0: globalrank     =      0 , 0
on rank 0: newfname       =      testB.out , testB.out
on rank 0: END of TEST B
on rank 0: numfiles       =      4 , 4
on rank 0: chunksize      =      100 , 100
on rank 0: globalrank     =      0 , 0
on rank 0: newfname       =      testC.out , testC.out
on rank 0: END of TEST C
