[MITgcm-devel] line search for large ctrl vectors

Martin Losch Martin.Losch at awi.de
Wed Dec 16 05:32:13 EST 2015


Sorry Matt, was too hasty,

I still use the MAX_INDEPEND variable static allocation, but there’s a cpp flag DYNAMIC that allocates dynamically and does not need MAX_INDEPEND.

M.

> On 16 Dec 2015, at 11:27, Martin Losch <Martin.Losch at awi.de> wrote:
> 
> Hi Matt,
> 
> did you try this:
> 
> <http://mitgcm.org/viewvc/MITgcm/MITgcm_contrib/mlosch/optim_m1qn3/>
> 
> ? 
> 
> I am not claiming that it is better than the optim/lsopt combination (in fact I saw cases where convergence is slower/worse), but it uses m1qn3 in a way it is supposed to be used and it is a more transparent compilation process (at least for me, since I wrote it … (o:)
> 
> Martin
> 
>> On 15 Dec 2015, at 19:28, Matthew Mazloff <mmazloff at ucsd.edu> wrote:
>> 
>> Hello
>> 
>> I am once again running into issues from my compiler not liking the size of the optimization line search variables
>> (e.g.   xx(nmax), adxx(nmax), dd(nmax),  gold(nmax),   xdiff(nmax) where nmax is set in makefile as MAX_INDEPEND).
>> 
>> In the past I have hacked the code to make it work, though I am not really satisfied with my solution. I have the feeling that others in the community have dealt with similar issues and would love to know what others have done. 
>> 
>> Input much appreciated!
>> 
>> Thanks!
>> Matt
>> 
>> 
>> 
>> 
>> 
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> 
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