issue with high resolution CAM4 set-up

[murali@uni_no]

I am trying to configure CAM4 at a horizontal resolution of ~25 km. The problem is that if the "-ice" flag is set to "cice", the configuration fails with a message "set_horiz_grid: no match for hgrid 0.23x0.31". But when I repeat the same with CAM5, it works fine. If I configure CAM4 with other ice options (csim4, sice and none), then also the configuring process goes well. The problem comes only if I use the prescribed sea-ice component with CAM4. Could someone comment on this issue?
Below is the command I'd issued to configure the model and the result;
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configure -dyn fv -hgrid 0.23x0.31 -ntasks 12 -nosmp -test -ice cice -mpi_inc /opt/cray/mpt/5.5.4/gni/mpich2-pgi/119/include -mpi_lib /opt/cray/mpt/5.5.4/gni/mpich2-pgi/119/lib -nc_inc /opt/cray/netcdf/4.2.0/pgi/119/include -nc_lib /opt/cray/netcdf/4.2.0/pgi/119/lib -nc_mod /opt/cray/netcdf/4.2.0/pgi/119/include -fc ftn

Issuing command to the CICE configure utility:
/work/users/mad042/cam_standalone/models/ice/cice/bld/configure -hgrid 0.23x0.31 -cice_mode prescribed -ntr_aero 0 -ntr_pond 1 -ntr_iage 0 -ntasks 12 -nthreads 1 -cache config_cache_cice.xml -cachedir /work/mad042/cam_standalone/models/atm/cam/bld/test

set_horiz_grid: no match for hgrid 0.23x0.31
configure: CICE configure returned: 65280
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Best,
Muralidhar

 

[eaton]

Please be more specific about what model versions you are using. The terms CAM4 and CAM5 are ambiguous.

 

[murali@uni_no]

By CAM4 and CAM5, I mean CAM-4.0 and CAM-5.1.1 respectively.

 

[eaton]

CCSM-4.0 (which includes CAM-4.0) was never used as a production platform for the 1/4 deg FV grid (0.23x0.31). Many of the problems with 1/4 deg CAM-4.0 have been resolved in the CESM-1.0.4 (which includes CAM-5.1.1) release. Furthermore, the CESM releases are backwards compatible with the physics package that was used in CAM-4.0 via the configure option "-phys cam4". So I would recommend only using CESM-1.0.4 for 1/4 deg FV simulations.

 

[murali@uni_no]

Thank you !