[MITgcm-support] Gridding problem in the c64f release

[Martin Losch]

Hi Francois,

these files are generated when you run "make" from the file "exch1_rx.template" and this file still contains the same line.

I think that you are right. Normally Olx is the same as Oly, so this may have gone unnoticed. Could you please check if the error goes away by fixing this line (replace _OLX_ by _OLY_) in exch1_rx.template. After this you need to change into your MITgcm_c64f/eesupp/src and do a "make" to rebuild the fortran sources, before you can go into your normal build-directory and recompile the code.

Martin

On Aug 8, 2013, at 3:44 PM, François Lefeuvre <francois.lefeuvre at gmail.com> wrote:

> Hi all,
> 
> I am a student in Master2 who is recently working on the MITgcm. I was trying to change the size of my domain (make me change the overlap values) and when I run my simulation, I got an error which is:
>  S/R EXCH1_RS: myOLn .GT. MAX_OLY_EXCH
> 
> So, I went for this problem in the code in the file exch1_rs.F (MITgcm_c64f/eesupp/src) and I found the place where the problem is. Here is two line from this file:
>  IF ( myOLn      .GT. MAX_OLX_EXCH )
>      &  STOP ' S/R EXCH1_RS: myOLn .GT. MAX_OLY_EXCH'
> 
> If you look well to these two lines, you see a contradiction between the error message and the condition in the if (I put it in bold above). My feeling, when I watched to the others "error checks" which are in the same part of the file, was that the error is contained in the if condition. The "_OLX_" should be an "_OLY_" (as the error message suggests it). Indeed, The comparison between the maximum of Olx (zonal direction) with the north overlap region size doesn't appear necessary to me. And the others "error checks" make me think that I am right.
> This error is minor because we often use kind of "symmetric" grid but I want to know if I am right or if there is some subtlety that I miss. I have also tried to look at this problem in the newiest release of the code but this file doesn't exist. It seems that all the "exch_" files were reorganized. So I don't know if this error has been propagated in new releases.
> 
> My apologies for the english and thank you!
> 
> François Lefeuvre.
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-support