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(last edit : oct. 3rd, 2012) |
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A) setup the experiments (incl. llc90 and cs32 core2.cnyf runs) |
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0) get MITgcm as explained @ http://mitgcm.org/public/source_code.html |
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1) the following assumes that you are in directory MITgcm/verification/ |
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i.e., after checkout of the model repository, do: |
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cd MITgcm/verification/ |
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from here, get the MITgcm_contrib/gael/verification/setup_these_exps.csh |
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c-shell setup script e.g. by typing |
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cvs co MITgcm_contrib/gael/verification/setup_these_exps.csh |
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mv MITgcm_contrib/gael/verification/setup_these_exps.csh . |
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Unless you already had something in MITgcm_contrib you may want |
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to remove that directory. Hereafter we wont need it anymore. |
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2) execute the setup script by typing |
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source ./setup_these_exps.csh |
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A pre-requisite is that you are logged in to the MITgcm |
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cvs server. If you completed step1, you indeed already are. |
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If otherwise, see http://mitgcm.org/public/source_code.html |
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3) step2 creates a directory global_oce_tmp_download that |
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contains the experiments directories. Move them (incl. |
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global_oce_input_fields) to MITgcm/verification and cd to |
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that location. Once you have done this succesfully you may want |
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to remove global_oce_tmp_download. We wont need it anymore. |
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4) exectute MITgcm with testreport. Two examples from one machine. |
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To run the cs32 test on one cpu : |
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./testreport -t global_oce_cs32 |
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And to run the llc90 test on 12 cpus, using mpi |
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./testreport -match 6 -of=../tools/build_options/linux_amd64_gfortran -MPI 12 -command 'mpirun -np TR_NPROC ./mitgcmuv' -t global_oce_llc90 |
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The optfile may be swaped for one that better suits your machine. |
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5) for llc90 experiment testreport should show something like |
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Y Y Y Y> 6<16 16 12 12 16 16 13 11 12 11 11 11 12 13 10 11 . . pass global_oce_llc90 |
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Y Y Y N .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . . N/O global_oce_llc90.core2 |
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Y Y Y N .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . . N/O global_oce_llc90.ecco_v4 |
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Y Y Y N .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . . N/O global_oce_llc90.ecmwf |
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implying that the main experiment ran as expected in global_oce_llc90/run. In contrast |
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the sub-experiments, by default, fail by omission of surface forcing fields. This |
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omission saves disk space and download time. In case you want to run the sub-experiments, |
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you will need to obtain additional inputs. Contact us about this if applies. |
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----------------------------------------------------------------------- |
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B) in case you want to change stuff on your end, or for troubleshooting |
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----------------------------------------------------------------------- |
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0) to run the core2, ecmwf, and ecco_v4 subexperiments you will need |
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extra stuff in global_oce_input_fields. Contact us if need be. |
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As a side note, for the verification experiment purpose, you |
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do not want to link the large ecco data sets (RADS etc). |
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1) In linking the experiments to one another we rely on 'build/genmake_local' and |
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'input*/prepare_run' which may be worth a special mention, at least to new MITgcm users. |
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1.1) most importantly : if you remove these files, the exps wont run or even compile. |
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1.2) build/genmake_local specifies the use of xmakedepend (since the default |
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cant handle so many files) and in global_oce_cs32 it points to |
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"../../global_oce_llc90/code/" If you move global_oce_llc90 away from |
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global_oce_cs32 you will need to edit that path in genmake_local. |
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1.3) in analogy input*/prepare_run are a set of instructions that "testreport" |
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will execute before running MITgcm, to link all of the proper inputs. |
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And again the experiments form a self-consistent group, such that |
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e.g. global_oce_cs32 will get shared files from global_oce_llc90. If you move |
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the directories appart, you will need to edit the paths in input*/prepare_run |
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1.4) the logic we followed in linking exps to one another : |
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- forward subexperiments : get local namelists then run input/prepare_run |
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- adjoint subexperiments : get input_ad.x/namelists then run corresponding forward |
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subexperiment input.x/prepare_run (that itself ultimately runs input/prepare_run) |
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2) In a couple .h files (that you find in the build directory after compiling) |
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small size parameters are used as a default (to save memory of course) |
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and they can become limiting in certain cases : |
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- you may want to integrate the model beyond a few time steps. You will need to |
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edit ecco_cost.h, increase nchklev_1, nchklev_2, nchklev_3 and recompile. |
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- you may want to use pkg/profiles (i.e. process insitu data via data.profiles). |
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You will need to edit profiles.h to increase NOBSGLOB, and recompile. |
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3) To run the adjoint subexperiments you need the taf/tamc software/license. |
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--------------------------------------------------------------- |
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Cheers, |
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Gael |
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