Changeset 9392 for branches/2017/dev_merge_2017/DOC/tex_sub/chap_misc.tex
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- 2018-03-09T16:57:00+01:00 (6 years ago)
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branches/2017/dev_merge_2017/DOC/tex_sub/chap_misc.tex
r9389 r9392 100 100 existing 'zoom' options are overly complex for this task and marked for deletion anyway. 101 101 This alternative subsetting operates for the j-direction only and works by optionally 102 looking for and using a global file attribute (named: \np{open \_ocean\_jstart}) to102 looking for and using a global file attribute (named: \np{open_ocean_jstart}) to 103 103 determine the starting j-row for input. The use of this option is best explained with an 104 104 example: Consider an ORCA1 configuration using the extended grid bathymetry and coordinate 105 105 files: 106 106 \vspace{-10pt} 107 \begin{verbatim} 108 eORCA1_bathymetry_v2.nc 109 eORCA1_coordinates.nc 110 \end{verbatim} 107 \ifile{eORCA1\_bathymetry\_v2} 108 \ifile{eORCA1\_coordinates} 111 109 \noindent These files define a horizontal domain of 362x332. Assuming the first row with 112 110 open ocean wet points in the non-isf bathymetry for this set is row 42 (Fortran indexing) 113 then the formally correct setting for \np{open \_ocean\_jstart} is 41. Using this value as the111 then the formally correct setting for \np{open_ocean_jstart} is 41. Using this value as the 114 112 first row to be read will result in a 362x292 domain which is the same size as the original 115 113 ORCA1 domain. Thus the extended coordinates and bathymetry files can be used with all the … … 130 128 131 129 \noindent Note the j-size of the global domain is the (extended j-size minus 132 \np{open \_ocean\_jstart} + 1 ) and this must match the size of all datasets other than130 \np{open_ocean_jstart} + 1 ) and this must match the size of all datasets other than 133 131 bathymetry and coordinates currently. However the option can be extended to any global, 2D 134 132 and 3D, netcdf, input field by adding the: … … 137 135 lrowattr=ln_use_jattr 138 136 \end{forlines} 139 optional argument to the appropriate \np{iom \_get} call and the \np{open\_ocean\_jstart} attribute to the corresponding input files. It remains the users responsibility to set \np{jpjdta} and \np{jpjglo} values in the \np{namelist\_cfg} file according to their needs.137 optional argument to the appropriate \np{iom_get} call and the \np{open_ocean_jstart} attribute to the corresponding input files. It remains the users responsibility to set \np{jpjdta} and \np{jpjglo} values in the \np{namelist_cfg} file according to their needs. 140 138 141 139 %>>>>>>>>>>>>>>>>>>>>>>>>>>>> … … 225 223 required by each individual for the fold operation. This alternative method should give identical 226 224 results to the default \textsc{ALLGATHER} method and is recommended for large values of \np{jpni}. 227 The new method is activated by setting \np{ln \_nnogather} to be true ({\bf nammpp}). The225 The new method is activated by setting \np{ln_nnogather} to be true ({\bf nammpp}). The 228 226 reproducibility of results using the two methods should be confirmed for each new, non-reference 229 227 configuration. … … 253 251 $\bullet$ Control print %: describe here 4 things: 254 252 255 1- \np{ln \_ctl} : compute and print the trends averaged over the interior domain253 1- \np{ln_ctl} : compute and print the trends averaged over the interior domain 256 254 in all TRA, DYN, LDF and ZDF modules. This option is very helpful when 257 255 diagnosing the origin of an undesired change in model results. 258 256 259 2- also \np{ln \_ctl} but using the nictl and njctl namelist parameters to check257 2- also \np{ln_ctl} but using the nictl and njctl namelist parameters to check 260 258 the source of differences between mono and multi processor runs. 261 259 262 260 %%gm to be removed both here and in the code 263 3- last digit comparison (\np{nn \_bit\_cmp}). In an MPP simulation, the computation of261 3- last digit comparison (\np{nn_bit_cmp}). In an MPP simulation, the computation of 264 262 a sum over the whole domain is performed as the summation over all processors of 265 263 each of their sums over their interior domains. This double sum never gives exactly … … 271 269 %%gm end 272 270 273 $\bullet$ Benchmark (\np{nn \_bench}). This option defines a benchmark run based on271 $\bullet$ Benchmark (\np{nn_bench}). This option defines a benchmark run based on 274 272 a GYRE configuration (see \S\ref{CFG_gyre}) in which the resolution remains the same 275 273 whatever the domain size. This allows a very large model domain to be used, just by
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