[MITgcm-support] using netcdf pickup files

[Martin Losch]

Sandy,

I personally would never use netcdf for pickups (I always have pickup_write_mnc=.FALSE.,), because there are usually more problems associated with then without; also with useSingleCPUio the mds pickup files are all in one file (per pkg) and you can restart from this file with a different number of CPUs (if required), something that’s not possible with netcdf (yet).

However, in your case you probably want to put all pickup*.nc into the work directory (where you run your mitgcmuv) and set
mnc_use_indir=.FALSE., (I believe that’s the default)
as you have probably figured out yourself by now

Martin

> On 14. Jul 2017, at 16:26, Sandy.Gregorio at uqar.ca wrote:
> 
> Hi,
> 
> I am trying to start a run from pickup files using netcdf output data.
> 
> mitgcmuv is in my exp_directory while my pickup files are in sub-directories mnc_global4_**** with names  pickup.0004000000.t***.nc
> 
> In my data file, I changed nIter0 to 4000000
> 
> I modified my data.mnc to:
> 
>  mnc_echo_gvtypes=.FALSE.,
>  mnc_use_indir=.TRUE.,
>  mnc_use_outdir=.TRUE.,
>  mnc_indir_str='mnc_global4_',
>  mnc_outdir_str='mnc_global4_',
>  mnc_outdir_date=.FALSE.,
>  monitor_mnc=.TRUE.,
>  timeave_mnc=.TRUE.,
>  snapshot_mnc=.TRUE.,
>  pickup_write_mnc=.TRUE.,
>  pickup_read_mnc=.TRUE.,
> 
> It doesn't work. Do I need to move my pickup files to my main directory containing mitgcmuv (and set mnc_use_indir to FALSE) and do I need to rename them?
> 
> Thanks for your help :)
> 
> Sandy
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