1 | ! |
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2 | !====================================================================== |
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3 | ! ROMS_AGRIF is a branch of ROMS developped at IRD and INRIA, in France |
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4 | ! The two other branches from UCLA (Shchepetkin et al) |
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5 | ! and Rutgers University (Arango et al) are under MIT/X style license. |
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6 | ! ROMS_AGRIF specific routines (nesting) are under CeCILL-C license. |
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7 | ! |
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8 | ! ROMS_AGRIF website : http://roms.mpl.ird.fr |
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9 | !====================================================================== |
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10 | ! |
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11 | /* Auxiliary module "compute_auxiliary_bounds.h": |
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12 | --------------------------------------------------------------- |
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13 | Compute derived bounds for the loop indices over a subdomain |
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14 | "tile". The extended bounds [labelled by suffix R] are designed |
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15 | to cover also the outer ghost points, if the subdomain "tile" is |
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16 | adjacent to the PHYSICAL boundary. |
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17 | |
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18 | NOTE: IstrR,IendR,JstrR,JendR computed by this module DO NOT COVER |
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19 | ghost points associated with the internal computational boundaries |
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20 | of MPI subdomains. |
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21 | |
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22 | This module also computes loop-bounds for U- and V-type variables |
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23 | which belong to the interior of the computational domain. These |
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24 | are labelled by suffixes U,V and they step one grid point inward |
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25 | from the side of the subdomain adjacent to the physical boundary. |
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26 | Conversely, for an internal subdomain [which does not have |
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27 | segments of the physical boundary] all variables with suffixes |
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28 | R,U,V are set to the same values are the corresponding non-suffixed |
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29 | variables. |
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30 | Because this module also contains type declarations for these |
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31 | bounds, it must be included just after the last type declaration |
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32 | inside a subroutine, but before the first executable statement. |
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33 | */ |
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34 | integer IstrR,IendR,JstrR,JendR |
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35 | #ifdef EW_PERIODIC |
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36 | # define IstrU Istr |
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37 | #else |
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38 | integer IstrU |
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39 | #endif |
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40 | #ifdef NS_PERIODIC |
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41 | # define JstrV Jstr |
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42 | #else |
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43 | integer JstrV |
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44 | #endif |
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45 | |
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46 | if (WESTERN_EDGE) then |
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47 | # ifdef EW_PERIODIC |
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48 | IstrR=Istr-2 |
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49 | # else |
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50 | IstrR=Istr-1 |
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51 | IstrU=Istr+1 |
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52 | # endif |
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53 | else |
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54 | IstrR=Istr |
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55 | # ifndef EW_PERIODIC |
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56 | IstrU=Istr |
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57 | # endif |
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58 | endif |
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59 | |
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60 | if (EASTERN_EDGE) then |
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61 | # ifdef EW_PERIODIC |
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62 | IendR=Iend+2 |
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63 | # else |
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64 | IendR=Iend+1 |
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65 | # endif |
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66 | else |
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67 | IendR=Iend |
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68 | endif |
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69 | |
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70 | if (SOUTHERN_EDGE) then |
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71 | # ifdef NS_PERIODIC |
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72 | JstrR=Jstr-2 |
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73 | # else |
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74 | JstrR=Jstr-1 |
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75 | JstrV=Jstr+1 |
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76 | # endif |
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77 | else |
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78 | JstrR=Jstr |
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79 | # ifndef NS_PERIODIC |
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80 | JstrV=Jstr |
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81 | # endif |
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82 | endif |
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83 | |
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84 | if (NORTHERN_EDGE) then |
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85 | # ifdef NS_PERIODIC |
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86 | JendR=Jend+2 |
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87 | # else |
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88 | JendR=Jend+1 |
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89 | # endif |
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90 | else |
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91 | JendR=Jend |
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92 | endif |
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