Ocean Modeling Discussion

Hello everyone,

I have been running the ROMS version 3.5 on a Linux x86_64 server using ifort as the compiler with no biological modules. But now I have defined the basic BIO_FENNEL and other related modules and the model blows up on the very first time step. I tried to reduce the time step but ...

Hi Kate,

I should have been clearer. I first compile in serial mode using the USE_DEBUG option. I got the oceanG executable and ran it as a serial run and it worked.

Then I switched to compiling for oceanM still in serial mode with the USE_DEBUG option turned off. The run was successful.

After ...

Hello everyone,

We have been trying to start the biogeochemical module of ROMS. I was also able to get the model to compile and create the executable, oceanM.
However, when I try to set up a run using the forcing conditions for 2010, using the following command line:

mpirun -np 56 ./oceanM ...

Thanks for your reply Kate, but how do I go about doing that? Is there a website you could direct me to?

Thanks,
Rasika

Hello everyone,

I am trying to compile ROMS 3.5 on a Linux x86_64 machine using a 3.6.3 version of netcdf installed using intel C and Fortran. However I keep running into the following error when trying to compile the model. Does anyone have any suggestions for correcting this problem?

Thanks ...

Hello,

I am trying to run the ROMS model for the Choptank River system. It has been compiled using ifort and a test run for the year 2010 was set up. The simulation does not face any problems in serial mode but after executing it in parallel using the command line,

mpirun -np 8 ./oceanM choproms ...

Thank you for all your inputs.
Smchen: I have started the run in serial mode. That is the first checkpoint.

Kate: I am looking into the possibility of it being a compiler issue. The setup was previously compiled using gfort and ran successfully. My version was compiled using ifort and I'm running ...

Kate: I am not sure how I would go about changing compilers. I am relatively new to using ROMS. I am currently using mpif90 I believe. I think I do have access to ifort also. Do you have any experience with the two?

Smchen: Thanks for your reply. I did check the limits. Here's my ulimit output ...

First, I would like to say thanks for all your suggestions! I checked with the person in charge of the server and there are no limits on the memory space or cpu time for my account. I'm not sure what you mean by "limit and ulimit are built into the shell". Could you provide some ideas on that?

Also ...

Thanks for your reply kate. The server actually supports 128GB of RAM, with I believe 24 processors which is substantial amount of memory. The model itself has 501x261x20 grid points but with a timestep of 10secs. So even if the simulation runs for 24000 steps, it still generates only two days of ...

Hello,

I am trying to run the ROMS model for the Choptank River system. It has been compiled and a test run for the year 2010 was set up. After executing it using the command line,

mpirun -np 8 ./oceanM choproms.in > myrun.log &

the model runs successfully upto about 24,000 timesteps. However ...