[MITgcm-devel] multiple ptracers with divided adjoint

[Patrick Heimbach]

Hi Matt,

ok.
It ought to be possible to remedy this
by having a loop over all tracers in
ptracers_ad_check_levN_dir.h   ( N> 1 )
something like

      DO iTracer = 1, PTRACERS_num
CADJ STORE ptracer(:,:,:,:,:,iTracer)
CADJ &     = tapelev2, key = ilev_2
etc...
      ENDDO

That should generate a separate file for each tracer.

-p.

On Mar 14, 2011, at 10:57 PM, Matthew Mazloff wrote:

> Hi Patrick,
> 
> Just to follow up on this issue -- the problem has to do with the size of the tapelevel files -- so its machine limitations, not the code.
> 
> For my setup I can run with up to  PTRACERS_num =  6 -- then at  PTRACERS_num =  7 the outer tape level files get too large and the model poofs.
> 
> -Matt
> 
> 
> 
> 
> On Mar 7, 2011, at 7:41 PM, Matthew Mazloff wrote:
> 
>> Hi Patrick,
>> 
>> Well it poofed in the outer-most tapelevels for PTRACERS_num =  11.
>> But actually, it poofed somewhere else for PTRACERS_num =  2.
>> 
>> I am going to re-run the PTRACERS_num =  2 case to make sure I know
>> exactly where it poofed
>> 
>> I haven't tried it non-DIVA
>> 
>> Thanks!
>> -Matt
>> 
>> 
>> 
>> 
>> On Mar 7, 2011, at 5:17 PM, Patrick Heimbach wrote:
>> 
>>> Hi Matt,
>>> does it also poof in same setup, but non-DIVA?
>>> Also, does it crash writing tapes or the DIVA snapshots?
>>> Also, does it crash writing outer-most tapelevels or intermediate?
>>> -p.
>>> 
>>> On Mar 7, 2011, at 7:29 PM, Matthew Mazloff wrote:
>>> 
>>>> Hello,
>>>> 
>>>> I tried to run the DIVA with multiple tracers but it crashes while
>>>> writing the tapelevels.  With PTRACERS_num =  1 everything is fine
>>>> --- I switch to PTRACERS_num =  2 and poof.
>>>> 
>>>> I'll look into whats going on later -- but wanted to check if
>>>> anyone was already aware of this problem.
>>>> 
>>>> Thanks
>>>> Matt
>>>> 
>>>> 
>>>> 
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>>> ---
>>> 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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>> 
>> 
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> 
> 
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---
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