[MITgcm-support] Matlab scripts for viewing netcdf files

[Ali Ramadhan]

Hi Sanjiv,

I'm not familiar with the netCDF MATLAB module so I probably can't help there but it might be helpful if you posted the new errors you're getting.

To answer (iii) you can set useSingleCpuIO = .TRUE. in the PARM01 namelist within the main data file (Section 9.2.1.3<https://mitgcm.readthedocs.io/en/latest/outp_pkgs/outp_pkgs.html?highlight=useSingleCpuIO>) so that all tiles are sent to a single CPU which combines them and writes out a single file for the entire grid. I imagine you'll lose some performance but unless you have many tiles or very large tiles it shouldn't be too noticeable. Also took me a while to find this setting when I first started!

Cheers,
Ali
________________________________
From: MITgcm-support [mitgcm-support-bounces at mitgcm.org] on behalf of Sanjiv Ramachandran [sramachandran at umassd.edu]
Sent: Wednesday, November 14, 2018 4:57 PM
To: mitgcm-support at mitgcm.org
Subject: [MITgcm-support] Matlab scripts for viewing netcdf files


Hi,

    I am trying to set up the 'MLadjust'  test case, which is one of the cases in the 'verification' folder. My output gets written into multiple files, one for each tile, as I am using MPI. I am using the latest version of MITgcm.


I have some questions regarding the 'mnc_assembly.m' file in the utils/matlab/ folder:


(i) The file has commands of the form:


fnc = netcdf(fnm, 'nowrite');


I replaced 'netcdf' with 'netcdf.open' as otherwise the command would not execute. But after the replacement, I am getting other errors.


(ii) How do you assemble files across multiple folders? The file mnc_assembly.m only assembles all the tiles within a folder.


(iii) Is there any way to get  MITgcm to just return the fields for the entire grid in one big file (eg. state.0000100000.nc)? For my purposes, there are no benefits to having the output written separately for each tile.


Thanks,

Sanjiv

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