[2352] | 1 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 2 | ! |
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| 3 | ! this module contains necessary variables for remapping between |
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| 4 | ! two grids. also routines for resizing and initializing these |
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| 5 | ! variables. |
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| 6 | ! |
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| 7 | !----------------------------------------------------------------------- |
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| 8 | ! |
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| 9 | ! CVS:$Id: remap_vars.f,v 1.5 2000/04/19 21:56:26 pwjones Exp $ |
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| 10 | ! |
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| 11 | ! Copyright (c) 1997, 1998 the Regents of the University of |
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| 12 | ! California. |
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| 13 | ! |
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| 14 | ! This software and ancillary information (herein called software) |
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| 15 | ! called SCRIP is made available under the terms described here. |
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| 16 | ! The software has been approved for release with associated |
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| 17 | ! LA-CC Number 98-45. |
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| 18 | ! |
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| 19 | ! Unless otherwise indicated, this software has been authored |
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| 20 | ! by an employee or employees of the University of California, |
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| 21 | ! operator of the Los Alamos National Laboratory under Contract |
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| 22 | ! No. W-7405-ENG-36 with the U.S. Department of Energy. The U.S. |
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| 23 | ! Government has rights to use, reproduce, and distribute this |
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| 24 | ! software. The public may copy and use this software without |
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| 25 | ! charge, provided that this Notice and any statement of authorship |
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| 26 | ! are reproduced on all copies. Neither the Government nor the |
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| 27 | ! University makes any warranty, express or implied, or assumes |
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| 28 | ! any liability or responsibility for the use of this software. |
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| 29 | ! |
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| 30 | ! If software is modified to produce derivative works, such modified |
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| 31 | ! software should be clearly marked, so as not to confuse it with |
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| 32 | ! the version available from Los Alamos National Laboratory. |
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| 33 | ! |
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| 34 | !*********************************************************************** |
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| 35 | |
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| 36 | module remap_vars |
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| 37 | |
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| 38 | use kinds_mod |
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| 39 | use constants |
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| 40 | use grids |
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| 41 | |
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| 42 | implicit none |
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| 43 | |
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| 44 | !----------------------------------------------------------------------- |
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| 45 | ! |
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| 46 | ! module variables |
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| 47 | ! |
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| 48 | !----------------------------------------------------------------------- |
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| 49 | |
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| 50 | integer (kind=int_kind), parameter :: & |
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| 51 | norm_opt_none = 1 & |
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| 52 | , norm_opt_dstarea = 2 & |
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| 53 | , norm_opt_frcarea = 3 |
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| 54 | |
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| 55 | integer (kind=int_kind), parameter :: & |
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| 56 | map_type_conserv = 1 & |
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| 57 | , map_type_bilinear = 2 & |
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| 58 | , map_type_bicubic = 3 & |
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| 59 | , map_type_distwgt = 4 |
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| 60 | |
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| 61 | integer (kind=int_kind), save :: & |
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| 62 | max_links_map1 & ! current size of link arrays |
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| 63 | , num_links_map1 & ! actual number of links for remapping |
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| 64 | , max_links_map2 & ! current size of link arrays |
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| 65 | , num_links_map2 & ! actual number of links for remapping |
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| 66 | , num_maps & ! num of remappings for this grid pair |
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| 67 | , num_wts & ! num of weights used in remapping |
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| 68 | , map_type & ! identifier for remapping method |
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| 69 | , norm_opt & ! option for normalization (conserv only) |
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| 70 | , resize_increment ! default amount to increase array size |
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| 71 | |
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| 72 | integer (kind=int_kind), dimension(:), allocatable, save :: & |
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| 73 | grid1_add_map1, & ! grid1 address for each link in mapping 1 |
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| 74 | grid2_add_map1, & ! grid2 address for each link in mapping 1 |
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| 75 | grid1_add_map2, & ! grid1 address for each link in mapping 2 |
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| 76 | grid2_add_map2 ! grid2 address for each link in mapping 2 |
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| 77 | |
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| 78 | real (kind=dbl_kind), dimension(:,:), allocatable, save :: & |
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| 79 | wts_map1, & ! map weights for each link (num_wts,max_links) |
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| 80 | wts_map2 ! map weights for each link (num_wts,max_links) |
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| 81 | |
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| 82 | !*********************************************************************** |
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| 83 | |
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| 84 | contains |
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| 85 | |
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| 86 | !*********************************************************************** |
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| 87 | |
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| 88 | subroutine init_remap_vars |
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| 89 | |
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| 90 | !----------------------------------------------------------------------- |
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| 91 | ! |
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| 92 | ! this routine initializes some variables and provides an initial |
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| 93 | ! allocation of arrays (fairly large so frequent resizing |
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| 94 | ! unnecessary). |
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| 95 | ! |
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| 96 | !----------------------------------------------------------------------- |
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| 97 | |
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| 98 | !----------------------------------------------------------------------- |
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| 99 | ! |
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| 100 | ! determine the number of weights |
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| 101 | ! |
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| 102 | !----------------------------------------------------------------------- |
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| 103 | |
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| 104 | select case (map_type) |
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| 105 | case(map_type_conserv) |
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| 106 | num_wts = 3 |
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| 107 | case(map_type_bilinear) |
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| 108 | num_wts = 1 |
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| 109 | case(map_type_bicubic) |
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| 110 | num_wts = 4 |
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| 111 | case(map_type_distwgt) |
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| 112 | num_wts = 1 |
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| 113 | end select |
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| 114 | |
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| 115 | !----------------------------------------------------------------------- |
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| 116 | ! |
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| 117 | ! initialize num_links and set max_links to four times the largest |
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| 118 | ! of the destination grid sizes initially (can be changed later). |
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| 119 | ! set a default resize increment to increase the size of link |
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| 120 | ! arrays if the number of links exceeds the initial size |
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| 121 | ! |
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| 122 | !----------------------------------------------------------------------- |
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| 123 | |
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| 124 | num_links_map1 = 0 |
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| 125 | max_links_map1 = 4*grid2_size |
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| 126 | if (num_maps > 1) then |
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| 127 | num_links_map2 = 0 |
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| 128 | max_links_map1 = max(4*grid1_size,4*grid2_size) |
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| 129 | max_links_map2 = max_links_map1 |
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| 130 | endif |
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| 131 | |
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| 132 | resize_increment = 0.1*max(grid1_size,grid2_size) |
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| 133 | |
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| 134 | !----------------------------------------------------------------------- |
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| 135 | ! |
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| 136 | ! allocate address and weight arrays for mapping 1 |
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| 137 | ! |
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| 138 | !----------------------------------------------------------------------- |
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| 139 | |
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| 140 | allocate (grid1_add_map1(max_links_map1), & |
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| 141 | grid2_add_map1(max_links_map1), & |
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| 142 | wts_map1(num_wts, max_links_map1)) |
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| 143 | |
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| 144 | !----------------------------------------------------------------------- |
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| 145 | ! |
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| 146 | ! allocate address and weight arrays for mapping 2 if necessary |
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| 147 | ! |
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| 148 | !----------------------------------------------------------------------- |
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| 149 | |
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| 150 | if (num_maps > 1) then |
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| 151 | allocate (grid1_add_map2(max_links_map2), & |
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| 152 | grid2_add_map2(max_links_map2), & |
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| 153 | wts_map2(num_wts, max_links_map2)) |
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| 154 | endif |
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| 155 | |
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| 156 | !----------------------------------------------------------------------- |
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| 157 | |
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| 158 | end subroutine init_remap_vars |
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| 159 | |
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| 160 | !*********************************************************************** |
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| 161 | |
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| 162 | subroutine resize_remap_vars(nmap, increment) |
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| 163 | |
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| 164 | !----------------------------------------------------------------------- |
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| 165 | ! |
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| 166 | ! this routine resizes remapping arrays by increasing(decreasing) |
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| 167 | ! the max_links by increment |
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| 168 | ! |
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| 169 | !----------------------------------------------------------------------- |
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| 170 | |
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| 171 | !----------------------------------------------------------------------- |
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| 172 | ! |
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| 173 | ! input variables |
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| 174 | ! |
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| 175 | !----------------------------------------------------------------------- |
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| 176 | |
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| 177 | integer (kind=int_kind), intent(in) :: & |
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| 178 | nmap, & ! identifies which mapping array to resize |
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| 179 | increment ! the number of links to add(subtract) to arrays |
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| 180 | |
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| 181 | !----------------------------------------------------------------------- |
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| 182 | ! |
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| 183 | ! local variables |
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| 184 | ! |
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| 185 | !----------------------------------------------------------------------- |
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| 186 | |
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| 187 | integer (kind=int_kind) :: & |
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| 188 | ierr, & ! error flag |
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| 189 | mxlinks ! size of link arrays |
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| 190 | |
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| 191 | integer (kind=int_kind), dimension(:), allocatable :: & |
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| 192 | add1_tmp, & ! temp array for resizing address arrays |
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| 193 | add2_tmp ! temp array for resizing address arrays |
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| 194 | |
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| 195 | real (kind=dbl_kind), dimension(:,:), allocatable :: & |
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| 196 | wts_tmp ! temp array for resizing weight arrays |
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| 197 | |
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| 198 | !----------------------------------------------------------------------- |
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| 199 | ! |
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| 200 | ! resize map 1 arrays if required. |
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| 201 | ! |
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| 202 | !----------------------------------------------------------------------- |
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| 203 | |
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| 204 | select case (nmap) |
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| 205 | case(1) |
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| 206 | |
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| 207 | !*** |
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| 208 | !*** allocate temporaries to hold original values |
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| 209 | !*** |
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| 210 | |
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| 211 | mxlinks = size(grid1_add_map1) |
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| 212 | allocate (add1_tmp(mxlinks), add2_tmp(mxlinks), & |
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| 213 | wts_tmp(num_wts,mxlinks)) |
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| 214 | |
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| 215 | add1_tmp = grid1_add_map1 |
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| 216 | add2_tmp = grid2_add_map1 |
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| 217 | wts_tmp = wts_map1 |
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| 218 | |
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| 219 | !*** |
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| 220 | !*** deallocate originals and increment max_links then |
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| 221 | !*** reallocate arrays at new size |
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| 222 | !*** |
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| 223 | |
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| 224 | deallocate (grid1_add_map1, grid2_add_map1, wts_map1) |
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| 225 | max_links_map1 = mxlinks + increment |
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| 226 | allocate (grid1_add_map1(max_links_map1), & |
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| 227 | grid2_add_map1(max_links_map1), & |
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| 228 | wts_map1(num_wts,max_links_map1)) |
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| 229 | |
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| 230 | !*** |
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| 231 | !*** restore original values from temp arrays and |
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| 232 | !*** deallocate temps |
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| 233 | !*** |
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| 234 | |
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| 235 | mxlinks = min(mxlinks, max_links_map1) |
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| 236 | grid1_add_map1(1:mxlinks) = add1_tmp (1:mxlinks) |
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| 237 | grid2_add_map1(1:mxlinks) = add2_tmp (1:mxlinks) |
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| 238 | wts_map1 (:,1:mxlinks) = wts_tmp(:,1:mxlinks) |
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| 239 | deallocate(add1_tmp, add2_tmp, wts_tmp) |
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| 240 | |
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| 241 | !----------------------------------------------------------------------- |
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| 242 | ! |
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| 243 | ! resize map 2 arrays if required. |
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| 244 | ! |
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| 245 | !----------------------------------------------------------------------- |
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| 246 | |
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| 247 | case(2) |
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| 248 | |
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| 249 | !*** |
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| 250 | !*** allocate temporaries to hold original values |
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| 251 | !*** |
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| 252 | |
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| 253 | mxlinks = size(grid1_add_map2) |
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| 254 | allocate (add1_tmp(mxlinks), add2_tmp(mxlinks), & |
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| 255 | wts_tmp(num_wts,mxlinks),stat=ierr) |
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| 256 | if (ierr .ne. 0) then |
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| 257 | print *,'error allocating temps in resize: ',ierr |
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| 258 | stop |
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| 259 | endif |
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| 260 | |
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| 261 | add1_tmp = grid1_add_map2 |
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| 262 | add2_tmp = grid2_add_map2 |
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| 263 | wts_tmp = wts_map2 |
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| 264 | |
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| 265 | !*** |
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| 266 | !*** deallocate originals and increment max_links then |
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| 267 | !*** reallocate arrays at new size |
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| 268 | !*** |
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| 269 | |
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| 270 | deallocate (grid1_add_map2, grid2_add_map2, wts_map2) |
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| 271 | max_links_map2 = mxlinks + increment |
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| 272 | allocate (grid1_add_map2(max_links_map2), & |
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| 273 | grid2_add_map2(max_links_map2), & |
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| 274 | wts_map2(num_wts,max_links_map2),stat=ierr) |
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| 275 | if (ierr .ne. 0) then |
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| 276 | print *,'error allocating new arrays in resize: ',ierr |
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| 277 | stop |
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| 278 | endif |
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| 279 | |
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| 280 | |
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| 281 | !*** |
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| 282 | !*** restore original values from temp arrays and |
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| 283 | !*** deallocate temps |
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| 284 | !*** |
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| 285 | |
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| 286 | mxlinks = min(mxlinks, max_links_map2) |
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| 287 | grid1_add_map2(1:mxlinks) = add1_tmp (1:mxlinks) |
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| 288 | grid2_add_map2(1:mxlinks) = add2_tmp (1:mxlinks) |
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| 289 | wts_map2 (:,1:mxlinks) = wts_tmp(:,1:mxlinks) |
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| 290 | deallocate(add1_tmp, add2_tmp, wts_tmp) |
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| 291 | |
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| 292 | end select |
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| 293 | |
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| 294 | !----------------------------------------------------------------------- |
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| 295 | |
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| 296 | end subroutine resize_remap_vars |
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| 297 | |
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| 298 | !*********************************************************************** |
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| 299 | |
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| 300 | end module remap_vars |
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| 301 | |
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| 302 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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