[MITgcm-devel] updating AD verification outputs

[Jean-Michel Campin]

Hi Martin,

Just to clarify, I did not update "all" the output that changed (using -v1, 
version 2.3.10) but only those with less than 13 digits of matching for the
AD gradients.

The results you are getting today (with -v2) are consitent with the one
produced yesterday (using -v1) on baudelaire:
http://mitgcm.org/testing/results/2013_03/tr_baudelaire_20130310_1/summary.txt
but the results you got on March 07 were obtained with version 2.3.8.

Cheers,
Jean-Michel

On Mon, Mar 11, 2013 at 09:18:46AM +0100, Martin Losch wrote:
> Hi Patrick and Jean-Michel,
> 
> it appears that Ralf changed something in TAF after my test with lab_sea that showed the differences between v1 and his v2 patched version. Now the differences are gone, but I get differences to the reference output that weren't there before.
> 
> On March07 I got this (for -v1)
> 
> Y Y Y Y 16>16<16 pass  lab_sea
> Y Y Y Y 16>16<16 pass  lab_sea.evp
> Y Y Y Y 16>16<16 pass  lab_sea.noseaice
> Y Y Y Y 16>16<16 pass  lab_sea.noseaicedyn
> 
> Today (after getting the updated verification experiments) I get this (for both -v1 and the "patched" MItgcm with -v2):
> Y Y Y Y 16>13<16 pass  lab_sea
> Y Y Y Y 16>13<16 pass  lab_sea.evp
> Y Y Y Y 16>15<16 pass  lab_sea.noseaice
> Y Y Y Y 16>16<16 pass  lab_sea.noseaicedyn
> 
> from Ralfs emai that answered my concern about the differences between v1 and v2 (translated from German): "[…] the patch is Ok but TAF had a problem with the numerics. It should be better with the current TAF […]" 
> Obviously, I can confirm that now.
> >From your emails I have the impression that Ralf's fix to TAF made tlm and adm numerically more consistent; is that right?
> 
> Martin
> 
> On Mar 9, 2013, at 4:06 PM, Patrick Heimbach <heimbach at MIT.EDU> wrote:
> 
> > 
> > Hi Jean-Michel,
> > 
> > before updating, let's first check the TLM to see if there are similar changes,
> > and what the gradient checks indicate in terms of actual accuracy changes.
> > 
> > May have to send a bug report to Fastopt, which I am not sure I can do
> > since I am being blocked from their taf-user at fastopt.de list.
> > 
> > Cheers
> > -Patrick
> > 
> > On Mar 9, 2013, at 9:58 AM, Jean-Michel Campin <jmc at ocean.mit.edu> wrote:
> > 
> >> Hi Patrick,
> >> 
> >> Looks like the recent update of TAF version (from 2.3.8 until yesterday
> >> to 2.3.10 today) change some output at the level of machine truncation:
> >> 
> >> On baudelaire with gfortran (no mpi):
> >> Y Y Y Y 16>12<16 FAIL  1D_ocean_ice_column
> >> Y Y Y Y 16>12<16 FAIL  bottom_ctrl_5x5
> >> Y Y Y Y 16>12<16 FAIL  lab_sea.noseaicedyn
> >> Y Y Y Y 16>12<16 FAIL  offline_exf_seaice
> >> 
> >> whereas yesterday the same 4 experiments:
> >> Y Y Y Y 16>13<16 pass  1D_ocean_ice_column
> >> Y Y Y Y 16>16<16 pass  bottom_ctrl_5x5
> >> Y Y Y Y 16>16<16 pass  lab_sea.noseaicedyn
> >> Y Y Y Y 16>16<16 pass  offline_exf_seaice
> >> 
> >> Should we update these 4 experiments AD output ?
> >> 
> >> Did not check yet the TLM output but will do later today.
> >> 
> >> Cheers,
> >> Jean-Michel
> >> 
> >> _______________________________________________
> >> MITgcm-devel mailing list
> >> MITgcm-devel at mitgcm.org
> >> http://mitgcm.org/mailman/listinfo/mitgcm-devel
> > 
> > 
> > ---
> > Patrick Heimbach | heimbach at mit.edu | http://www.mit.edu/~heimbach
> > MIT | EAPS 54-1420 | 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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