Turn on netcdf4 per https://github.com/COSIMA/access-om3/issues/81

The new build uses openmpi4.1.7, which fixes some bugs preventing parallel reads over symlinks. This allows use of parallelio netcdf4 option, even though at this resolution for most components we will still only use one PE for IO.

Author: anton-seaice

nuopc.runconfig

@@ -311,24 +311,24 @@ MED_modelio::
      diro = ./log
      logfile = med.log
      pio_async_interface = .false.
-     pio_netcdf_format = 64bit_offset
-     pio_numiotasks = -99
+     pio_netcdf_format = nothing
+     pio_numiotasks = 4
      pio_rearranger = 2
      pio_root = 1
-     pio_stride = 48
-     pio_typename = netcdf
+     pio_stride = 1
+     pio_typename = netcdf4p
 ::
 
 ATM_modelio::
      diro = ./log
      logfile = atm.log
      pio_async_interface = .false.
-     pio_netcdf_format = 64bit_offset
-     pio_numiotasks = -99
+     pio_netcdf_format = nothing
+     pio_numiotasks = 1
      pio_rearranger = 1
      pio_root = 1
-     pio_stride = 48
-     pio_typename = netcdf
+     pio_stride = 1
+     pio_typename = netcdf4p
 ::
 
 ICE_modelio::
@@ -338,8 +338,8 @@ ICE_modelio::
      pio_netcdf_format = nothing
      pio_numiotasks = 1
      pio_rearranger = 1
-     pio_root = 0
-     pio_stride = 48
+     pio_root = 1
+     pio_stride = 1
      pio_typename = netcdf4p
 ::
 
@@ -358,13 +358,13 @@ OCN_modelio::
 ROF_modelio::
      diro = ./log
      logfile = rof.log
-     pio_async_interface = .false. #not used
-     pio_netcdf_format = 64bit_offset #not used
-     pio_numiotasks = -99 #not used
-     pio_rearranger = 2 #not used
-     pio_root = 1 #not used
-     pio_stride = 48 #not used
-     pio_typename = netcdf #not used
+     pio_async_interface = .false. 
+     pio_netcdf_format = nothing 
+     pio_numiotasks = 1 
+     pio_rearranger = 2 
+     pio_root = 1 
+     pio_stride = 1
+     pio_typename = netcdf4p 
 ::
 
 DRV_modelio::