m04v OHC diagnostics failed

Diagnostics ohc fails for first chunk on experiment m04v by @vsicardi :

Starting Heat content Startdate: 19600101 Member: 0 Chunk: 1 Mixed layer: 0 Box: 0-10 Basin: Global_Ocean Operating system error: Cannot allocate memory Allocation would exceed memory limit Reading 6 values : imin imax jmin jmax kmin kmax npiglo = 1442 npjglo = 1021 npk = 75 npt = 12 nvpk = 75 Allocate TMASK Allocate temp Allocate e1t Allocate gdepw TIME : 40191.4961
e3t_0 has 2 dimensions MESH_ZGR V3 detected

[ERROR] Job Heat content Startdate: 19600101 Member: 0 Chunk: 1 Mixed layer: 0 Box: 0-10 Basin: Global_Ocean failed: ('Error executing {0}\n Return code: {1}', 'cdfheatc /scratch/Earth/jvegas/diags/m04v/tempoxptp4.nc 0 0 0 0 0 10', 1)