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Notes on tags used in MITgcmUV |
Notes on tags used in MITgcmUV |
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o verification/lab_sea: |
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- overhaul of the forward model experiments. The main motivation |
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for this revision is that lab_sea has proven quite fragile (when |
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changing the sea-ice code, and switching platforms) to a point |
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when failures were very hard to attribute to specific code problems. |
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- the suspected reason for this fragility is noise amplification by evp so, |
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to start with, we decided to replace evp with lsr in the main experiment. |
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- the input.lsr experiment thus became obsolete and was removed. |
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- it was replaced with the input.fd experiment that uses an |
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analytical "free drift" solution as the ice velocity field. |
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- Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp) |
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will hopefully allow us to discriminate problems due to dynamic solvers |
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from problems due to the thermodynamic code. input.salt_plume (lsr) allows |
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us to test additional options, along with the salt plume package. |
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- Finally a pickup was generated (at the end of a one year run) to |
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make the tests more representative of an actual model run. Previously |
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the tests starting point was a 1m thickness of ice everywhere. |
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o pkg/seaice: |
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- introducing S\R seaice_freedrift.F that compute the |
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analytical solution to an approximate ice momentum |
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equation (i.e. the simple stress/coriolis balance). |
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- define SEAICE_ALLOW_FREEDRIFT to trigger the computation |
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of the free drift velocity field, and enable its use. |
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To actually use the free drift solution as the model ice |
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velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice. |
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o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata" |
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checkpoint62l (2010/10/04) |
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o pkg/seaice: |
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-fix the USE_ORIGINAL_SBI version (for variable freezing point); |
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-use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new |
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version (with USE_ORIGINAL_SBI undef); |
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o add hooks for new packages OASIS, the package will follow |
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(hooks exclude the seaice pkg for now) |
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o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO |
o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO |
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Option to use mdsio_read_whalos.F/mdsio_write_whalos.F, |
Option to use mdsio_read_whalos.F/mdsio_write_whalos.F, |
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rather than mdsio_readvector.F/mdsio_writevector.F, within |
rather than mdsio_readvector.F/mdsio_writevector.F, within |
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adread_adwrite.F to read/write adjoint-related tapes to disk. |
adread_adwrite.F to read/write adjoint-related tapes to disk. |
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o eesup and pkg/mdsio: ALLOW_WHIO |
o eesupp and pkg/mdsio: ALLOW_WHIO |
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Option to write/read 2D fields to files including tiles halos. |
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Option to write/read 2D fields to files including tiles halos. |
The main purpose is for adjoint related "tape I/O". |
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The main purpose is for adjoint related "tape I/O". |
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The secondary purpose is for debugging phases. |
The secondary purpose is for debugging phases. |
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A word on those rather specifically intended purposes. |
A word on those rather specifically intended purposes. |
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The code was meant to be stripped down to the bare minimum. |
The code was meant to be stripped down to the bare minimum. |
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Typically, there is a unique and basic mapping to the global |
Typically, there is a unique and basic mapping to the global |
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buffer (tile by tile, then proc by proc, then level by level), and |
buffer (tile by tile, then proc by proc, then level by level), and |
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byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not |
byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not |
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meant to generate user friendly outputs of various shapes and forms. |
meant to generate user friendly outputs of various shapes and forms. |
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Rather it is intended, for the knowledgeabale developers, |
Rather it is intended, for the knowledgeabale developers, |
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to be largely independent of the many mdsio options, to allow |
to be largely independent of the many mdsio options, to allow |
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outputs of tiles+halos in debugging phases and in adjoint runs, |
outputs of tiles+halos in debugging phases and in adjoint runs, |
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and to allow some flexibility in tuning (adoint) I/O depending on each |
and to allow some flexibility in tuning (adoint) I/O depending on each |
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file system behavior. With regard to tuning, most of the potential knobs |
file system behavior. With regard to tuning, most of the potential knobs |
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(to leave files open, to allocate the I/O indep. of usesinglecpuio, |
(to leave files open, to allocate the I/O indep. of usesinglecpuio, |
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to specify directories, to specify the typical size of I/O calls, etc.) |
to specify directories, to specify the typical size of I/O calls, etc.) |
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are not yet included, and will be added if they prove useful. |
are not yet included, and will be added if they prove useful. |
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