Fix mv read loop hardcoding 4 instead of nnode #4625

Job	Run time
Lint Gate	1m 20s
Detect File Changes	9s
Github (macos, mpi, no-debug, false)	1h 30m 18s
Github (ubuntu, mpi, debug, true)	1h 29m 42s
Georgia Tech \| Phoenix (cpu)	1s
Github (ubuntu, mpi, no-debug, true)	1h 34m 22s
Github (ubuntu, mpi, debug, false)	2h 50m 0s
Georgia Tech \| Phoenix (gpu-acc)	3h 47m 23s
Oak Ridge \| Frontier (gpu-omp)	1s
Github (ubuntu, mpi, no-debug, false)	2h 18m 11s
Github (macos, mpi, debug, false)	1h 18m 45s
Oak Ridge \| Frontier (gpu-acc)	1s
Georgia Tech \| Phoenix (gpu-omp)	1s
Github (ubuntu, no-mpi, single, no-debug, false)	28m 42s
Oak Ridge \| Frontier (AMD) (gpu-omp)	1s
Oak Ridge \| Frontier (AMD) (cpu)	4h 33m 38s
Oak Ridge \| Frontier (cpu)	4h 33m 38s
Oak Ridge \| Frontier (gpu-acc)	1s
Oak Ridge \| Frontier (AMD) (cpu)	1s
Oak Ridge \| Frontier (gpu-omp)	1s
Oak Ridge \| Frontier (cpu)	40m 20s
Georgia Tech \| Phoenix (cpu)	40m 20s
Oak Ridge \| Frontier (AMD) (gpu-omp)	1s
Georgia Tech \| Phoenix (gpu-omp)	1s
Georgia Tech \| Phoenix (gpu-acc)	1s
Lint Gate	1m 20s
Github (ubuntu, mpi, debug, false)	2h 50m 0s
Github (ubuntu, mpi, no-debug, true)	1h 34m 22s
Github (ubuntu, mpi, debug, true)	1h 29m 42s
Github (ubuntu, mpi, no-debug, false)	2h 18m 11s
Github (macos, mpi, debug, false)	1h 18m 45s
Github (macos, mpi, no-debug, false)	1h 30m 18s
Github (ubuntu, no-mpi, single, no-debug, false)	28m 42s
Detect File Changes	9s
	1d 13h 18m 28s

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