[MITgcm-devel] NAMELIST changes (how to and how not to)

[Jean-Michel Campin]

Hi Patrick,

I agree. 
But it's Chris who first introduced this "retired parameter"
thing, I just did a "cut and paste".
Jean-Michel

On Wed, Oct 17, 2007 at 06:27:25PM -0400, Patrick Heimbach wrote:
> 
> Hi there,
> 
> after being puzzled for a day or two
> why the ECCO code updated to a new model version
> doesn't work anymore I discovered that the
> namelist in SEAICE has been reduced in a
> very non-smart way - by just dropping a variable (SEAICEuseEVP).
> 
> That is certainly NOT the way to go,
> unless you want to make sure that the model
> is hopelessly incompatible w.r.t. old data files,
> or hopelessly difficult to catch such problems.
> 
> The way to do it better is as J.M. has demonstrated
> for pkg/diagnostics/ :
> Create a routine like diagnostics_list_check.F
> which checks for retired NAMELIST variables
> and stops the model with appropriate warning.
> That's better than a crash with cryptic NAMELIST error msg (Altix)
> or no crash at all with skipping of remainder (IBM SP).
> 
> Cheers
> -p.
> 
> ---
> Patrick Heimbach | heimbach at mit.edu | http://www.mit.edu/~heimbach
> MIT | EAPS 54-1518 | 77 Massachusetts Ave | Cambridge MA 02139 USA
> FON +1-617-253-5259 | FAX +1-617-253-4464 | SKYPE patrick.heimbach
> 
> 
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