Ocean Modeling Discussion

Hello,
I have a problem that I hope someone could guide me how to resolve it.
I am encountering an MPI-related error while running the nonlinear ROMS model on a Cray system. Interestingly, this issue does not occur when I run ROMS 4D-Var or ROMS-split on the same system with similar configurations ...

Update:
After experimenting with different compilation flags, I found that using -O3 -h fp0 -h nofma (to avoid optimizing floating-point operations) resolved the issue.

Best,
Parisa

Thanks, I loaded modules as you suggested:
Currently Loaded Modules:
1) craype-x86-genoa 4) perftools-base/23.12.0 7) CmrsEnv/default 10) perlbrew/5.38.2 13) PrgEnv-intel/8.5.0 16) cray-libsci/24.07.0
2) libfabric/1.20.1 5) xpmem/2.9.6-1.1_20240510205610__g087dc11fc19d 8)TimeZoneEDT/default 11 ...

After you have PrgEnv-intel/8.5.0 , cray-netcdf , and cray-hdf loaded, what does module list return? Also, what is the output of the ifort --version command?

I would suggest you compile the code with USE_DEBUG=on in your build script so we can get a better sense of where in the code it is failing ...

Hello everyone,

I am working on a cray system, and trying to compile ROMS following these steps:
loaded cray modules:
module load PrgEnv-cray
module load cray-hdf5/1.12.2.11
module load cray-netcdf/4.9.0.11
Changed these in build_script
Fort to ftn-cray
export which_MPI=mpich (only available ...

Hello everyone,
I am working on a cray system, and I have these intel module to use:

------------------------------------- /opt/cray/pe/lmod/modulefiles/mix_compilers --------------------------------------
intel-classic-mixed/2022.1.0 intel-mixed/2024.0 intel-oneapi-mixed/2024.0
intel-classic ...