1 | /*************************************************************************/ |
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2 | /* */ |
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3 | /* Copyright (c) 1994 Stanford University */ |
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4 | /* */ |
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5 | /* All rights reserved. */ |
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6 | /* */ |
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7 | /* Permission is given to use, copy, and modify this software for any */ |
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8 | /* non-commercial purpose as long as this copyright notice is not */ |
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9 | /* removed. All other uses, including redistribution in whole or in */ |
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10 | /* part, are forbidden without prior written permission. */ |
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11 | /* */ |
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12 | /* This software is provided with absolutely no warranty and no */ |
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13 | /* support. */ |
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14 | /* */ |
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15 | /*************************************************************************/ |
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16 | |
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17 | #include <math.h> |
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18 | |
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19 | #include "decs.h" |
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20 | |
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21 | /////////////// |
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22 | void subblock() |
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23 | { |
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24 | long i; |
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25 | long j; |
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26 | long k; |
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27 | long xportion; |
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28 | long yportion; |
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29 | long my_num; |
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30 | |
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31 | /* Determine starting coord and number of points to process in */ |
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32 | /* each direction : i in numlev / j in xprocs / k in yprocs */ |
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33 | |
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34 | for (i = 0; i < numlev; i++) |
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35 | { |
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36 | xportion = (jmx[i] - 2) / xprocs; |
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37 | for (j = 0; j < xprocs; j++) |
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38 | { |
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39 | for (k = 0; k < yprocs; k++) |
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40 | { |
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41 | gps[k * xprocs + j]->rel_num_x[i] = xportion; |
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42 | } |
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43 | } |
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44 | yportion = (imx[i] - 2) / yprocs; |
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45 | for (j = 0; j < yprocs; j++) |
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46 | { |
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47 | for (k = 0; k < xprocs; k++) |
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48 | { |
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49 | gps[j * xprocs + k]->rel_num_y[i] = yportion; |
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50 | } |
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51 | } |
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52 | } |
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53 | |
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54 | for (my_num = 0; my_num < nprocs; my_num++) |
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55 | { |
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56 | for (i = 0; i < numlev; i++) |
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57 | { |
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58 | gps[my_num]->rlist[i] = 1; |
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59 | gps[my_num]->rljst[i] = 1; |
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60 | gps[my_num]->rlien[i] = gps[my_num]->rlist[i] + gps[my_num]->rel_num_y[i]; |
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61 | gps[my_num]->rljen[i] = gps[my_num]->rljst[i] + gps[my_num]->rel_num_x[i]; |
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62 | gps[my_num]->eist[i] = gps[my_num]->rlist[i] + 1; |
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63 | gps[my_num]->oist[i] = gps[my_num]->rlist[i]; |
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64 | gps[my_num]->ejst[i] = gps[my_num]->rljst[i] + 1; |
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65 | gps[my_num]->ojst[i] = gps[my_num]->rljst[i]; |
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66 | } |
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67 | } |
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68 | |
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69 | for (i = 0; i < nprocs; i++) |
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70 | { |
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71 | gps[i]->neighbors[LEFT] = -1; |
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72 | gps[i]->neighbors[RIGHT] = -1; |
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73 | gps[i]->neighbors[UP] = -1; |
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74 | gps[i]->neighbors[DOWN] = -1; |
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75 | gps[i]->neighbors[UPLEFT] = -1; |
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76 | gps[i]->neighbors[UPRIGHT] = -1; |
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77 | gps[i]->neighbors[DOWNLEFT] = -1; |
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78 | gps[i]->neighbors[DOWNRIGHT] = -1; |
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79 | |
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80 | if (i >= xprocs) |
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81 | { |
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82 | gps[i]->neighbors[UP] = i - xprocs; |
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83 | } |
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84 | if (i < nprocs - xprocs) |
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85 | { |
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86 | gps[i]->neighbors[DOWN] = i + xprocs; |
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87 | } |
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88 | if ((i % xprocs) > 0) |
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89 | { |
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90 | gps[i]->neighbors[LEFT] = i - 1; |
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91 | } |
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92 | if ((i % xprocs) < (xprocs - 1)) |
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93 | { |
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94 | gps[i]->neighbors[RIGHT] = i + 1; |
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95 | } |
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96 | |
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97 | j = gps[i]->neighbors[UP]; |
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98 | |
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99 | if (j != -1) |
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100 | { |
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101 | if ((j % xprocs) > 0) |
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102 | { |
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103 | gps[i]->neighbors[UPLEFT] = j - 1; |
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104 | } |
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105 | if ((j % xprocs) < (xprocs - 1)) |
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106 | { |
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107 | gps[i]->neighbors[UPRIGHT] = j + 1; |
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108 | } |
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109 | } |
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110 | |
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111 | j = gps[i]->neighbors[DOWN]; |
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112 | |
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113 | if (j != -1) |
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114 | { |
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115 | if ((j % xprocs) > 0) |
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116 | { |
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117 | gps[i]->neighbors[DOWNLEFT] = j - 1; |
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118 | } |
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119 | if ((j % xprocs) < (xprocs - 1)) |
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120 | { |
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121 | gps[i]->neighbors[DOWNRIGHT] = j + 1; |
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122 | } |
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123 | } |
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124 | } |
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125 | |
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126 | for (i = 0; i < nprocs; i++) |
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127 | { |
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128 | gps[i]->rownum = i / xprocs; |
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129 | gps[i]->colnum = i % xprocs; |
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130 | } |
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131 | } // end subblock() |
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