[MITgcm-devel] SIZE.h matters on Columbia for CS510?

[Patrick Heimbach]

Hi Hong,

afaik,
the files w2_e2setup.F and W2_EXCH2_TOPOLOGY.h
are dependent on your domain decomposition on the cubed sphere,
i.e. if you change that decomposition in SIZE.h
(which seems to be what you did), you need to regenerate
these two files so that all tile and face neighbor informations
on the cube remain correct.
The matlab script to do that is in
utils/exch2/matlab-topology-generator/driver.m

At least from your mail it sounds like you didn't do that.
And it means your problem is not a code version problem.

Hope this helps
-Patrick



On Jun 23, 2008, at 7:13 PM, Hong Zhang wrote:

> Dear all,
> last lime we reported a problem (attached here:
> ---------
> Something has happened to code from checkpoint59l to current head  
> branch, which makes it impossible to restart CS510 code.  Any clues  
> where we should look and what chekpoints to test?
> Job crashes on third time step with
>
>> WARNING: r*FacC < hFacInf at       3 pts : bi,bj,Thid,Iter=   1    
>> 1   1       218
>>  e.g. at i,j=  65  85 ; rStarFac,H,eta = -1.237739  4.755480E+03  
>> -1.064152E+04
>> STOP in CALC_R_STAR : too SMALL rStarFacC !
>>
> ---------
> We found this problem is related to the config of SIZE.h and  
> w2_e2setup.F
> We tested s216t_85x85/SIZE.h_216, s1800t_17x51/SIZE.h_450, and  
> s216t_85x85/SIZE.h_54.
> They all failed and caused the same error as mentioned above.
> But the config of s1350t_34x34/SIZE_270.h is workable.
> For s216t_85x85/SIZE.h_54 we further switched off the optimization
> (in Makefile setting FOPTIM =) but it has the same problem.
> We checked the output @second timestep
> but didn't find obvious overlap problem.
> Does anyone have any clue?
>
> hong
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> MITgcm-devel at mitgcm.org
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