1 | |
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2 | #include "stdio.h" |
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3 | #include "limits.h" |
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4 | #include "../giet_tsar/block_device.h" |
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5 | |
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6 | #define NL 512 |
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7 | #define NP 512 |
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8 | #define NB_IMAGES 1 |
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9 | #define NB_CLUSTER_MAX 256 |
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10 | |
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11 | #define PRINTF(...) ({ if (local_id == 0) { tty_printf(__VA_ARGS__); } }) |
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12 | |
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13 | /////////////////////////////////////////// |
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14 | // tricks to read parameters from ldscript |
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15 | /////////////////////////////////////////// |
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16 | |
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17 | struct plaf; |
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18 | |
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19 | extern struct plouf seg_ioc_base; |
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20 | extern struct plaf seg_heap_base; |
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21 | extern struct plaf NB_PROCS; |
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22 | extern struct plaf NB_CLUSTERS; |
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23 | |
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24 | ///////////// |
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25 | void main(){ |
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26 | unsigned int frame = 0; |
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27 | unsigned int date = 0; |
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28 | |
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29 | unsigned int c; // cluster index for loops |
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30 | unsigned int l; // line index for loops |
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31 | unsigned int p; // pixel index for loops |
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32 | |
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33 | unsigned int proc_id = procid(); // processor id |
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34 | unsigned int nlocal_procs = (unsigned int) &NB_PROCS; // number of processors per cluster |
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35 | unsigned int nclusters = (unsigned int) &NB_CLUSTERS; // number of clusters |
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36 | unsigned int local_id = proc_id % nlocal_procs; // local processor id |
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37 | unsigned int cluster_id = proc_id / nlocal_procs; // cluster id |
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38 | unsigned int base = (unsigned int) &seg_heap_base; // base address for shared buffers |
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39 | unsigned int increment = 0x80000000 / nclusters * 2; // cluster increment |
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40 | unsigned int nglobal_procs = nclusters * nlocal_procs; // number of tasks |
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41 | unsigned int npixels = NP * NL; // number of pixel per frame |
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42 | |
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43 | unsigned int * ioc_address = (unsigned int *) &seg_ioc_base; |
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44 | unsigned int block_size = ioc_address[BLOCK_DEVICE_BLOCK_SIZE]; |
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45 | unsigned int nblocks = npixels / block_size; // number of blocks per frame |
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46 | |
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47 | PRINTF("\n *** Entering main at cycle %d ***\n\n", proctime()); |
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48 | |
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49 | // parameters checking |
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50 | if ((nlocal_procs != 1) && (nlocal_procs != 2) && (nlocal_procs != 4)){ |
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51 | PRINTF("NB_PROCS must be 1, 2 or 4\n"); |
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52 | exit(1); |
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53 | } |
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54 | if ((nclusters != 1) && (nclusters != 2) && (nclusters != 4) && (nclusters != 8) && |
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55 | (nclusters != 16) && (nclusters != 32) && (nclusters != 64) && (nclusters != 128) && |
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56 | (nclusters != 256)){ |
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57 | PRINTF("NB_CLUSTERS must be a power of 1 between 1 and 256\n"); |
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58 | exit(1); |
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59 | } |
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60 | if (nglobal_procs > 1024){ |
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61 | PRINTF("NB_PROCS * NB_CLUSTERS cannot be larger than 1024\n"); |
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62 | exit(1); |
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63 | } |
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64 | if (proc_id >= nglobal_procs){ |
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65 | PRINTF("processor id %d larger than NB_CLUSTERS*NB_PROCS\n", proc_id); |
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66 | exit(1); |
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67 | } |
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68 | |
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69 | // Arrays of pointers on the shared, distributed buffers containing the frames |
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70 | // These arrays are indexed by the cluster index (sized for the worst case : 256 clusters) |
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71 | unsigned char * A[NB_CLUSTER_MAX]; |
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72 | unsigned char * B[NB_CLUSTER_MAX]; |
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73 | |
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74 | // Arrays of pointers on the instrumentation arrays |
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75 | // These arrays are indexed by the cluster index (sized for the worst case : 256 clusters) |
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76 | // each pointer points on the base adress of an array of NPROCS unsigned int |
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77 | unsigned int * LOAD_START[NB_CLUSTER_MAX]; |
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78 | unsigned int * LOAD_END[NB_CLUSTER_MAX]; |
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79 | unsigned int * TRSP_START[NB_CLUSTER_MAX]; |
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80 | unsigned int * TRSP_END[NB_CLUSTER_MAX]; |
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81 | unsigned int * DISP_START[NB_CLUSTER_MAX]; |
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82 | unsigned int * DISP_END[NB_CLUSTER_MAX]; |
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83 | |
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84 | // shared buffers address definition |
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85 | // from the seg_heap_base and increment depending on the cluster index |
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86 | // These arrays of pointers are identical and replicated in the stack of each task |
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87 | for (c = 0; c < nclusters; c++){ |
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88 | A[c] = (unsigned char *) (base + increment * c); |
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89 | B[c] = (unsigned char *) (base + npixels + increment * c); |
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90 | LOAD_START[c] = (unsigned int *) (base + 2 * npixels + increment * c); |
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91 | LOAD_END[c] = (unsigned int *) (base + 2 * npixels + nlocal_procs + increment * c); |
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92 | TRSP_START[c] = (unsigned int *) (base + 2 * npixels + 2 * nlocal_procs + increment * c); |
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93 | TRSP_END[c] = (unsigned int *) (base + 2 * npixels + 3 * nlocal_procs + increment * c); |
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94 | DISP_START[c] = (unsigned int *) (base + 2 * npixels + 4 * nlocal_procs + increment * c); |
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95 | DISP_END[c] = (unsigned int *) (base + 2 * npixels + 5 * nlocal_procs + increment * c); |
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96 | } |
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97 | |
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98 | PRINTF("NB_CLUSTERS = %d\n", nclusters); |
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99 | PRINTF("NB_LOCAL_PROCS = %d\n", nlocal_procs); |
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100 | PRINTF("NB_GLOBAL_PROCS = %d\n", nglobal_procs); |
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101 | PRINTF("NB_PIXELS = %d\n", npixels); |
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102 | PRINTF("BLOCK_SIZE = %d\n", block_size); |
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103 | PRINTF("NB_BLOCKS = %d\n\n", nblocks); |
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104 | |
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105 | |
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106 | PRINTF("*** starting barrier init at cycle %d ***\n", proctime()); |
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107 | |
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108 | // barriers initialization |
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109 | barrier_init(0, nglobal_procs); |
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110 | barrier_init(1, nglobal_procs); |
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111 | barrier_init(2, nglobal_procs); |
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112 | |
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113 | PRINTF("*** completing barrier init at cycle %d ***\n", proctime()); |
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114 | |
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115 | // Main loop (on frames) |
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116 | while (frame < NB_IMAGES){ |
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117 | // pseudo parallel load from disk to A[c] buffer : nblocks/nclusters blocks |
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118 | // only task running on processor with (local_id == 0) does it |
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119 | |
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120 | if (local_id == 0){ |
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121 | int p; |
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122 | |
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123 | date = proctime(); |
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124 | PRINTF("\n*** Starting load for frame %d at cycle %d\n", frame, date); |
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125 | |
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126 | for (p = 0; p < nlocal_procs; p++){ |
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127 | LOAD_START[cluster_id][p] = date; |
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128 | } |
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129 | tty_printf(" block_device offset : %d\n", nblocks * cluster_id / nclusters); |
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130 | if (ioc_read(frame * nblocks + nblocks * cluster_id / nclusters, A[cluster_id], nblocks / nclusters)){ |
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131 | tty_printf("echec ioc_read\n"); |
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132 | exit(); |
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133 | } |
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134 | if (ioc_completed()){ |
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135 | tty_printf("echec ioc_completed\n"); |
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136 | exit(); |
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137 | } |
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138 | |
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139 | date = proctime(); |
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140 | PRINTF("*** Completing load for frame %d at cycle %d\n", frame, date); |
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141 | for (p = 0; p < nlocal_procs; p++){ |
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142 | LOAD_END[cluster_id][p] = date; |
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143 | } |
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144 | } |
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145 | |
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146 | barrier_wait(0); |
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147 | |
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148 | // parallel transpose from A to B buffers |
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149 | // each processor makes the transposition for (NL/nglobal_procs) lines |
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150 | // (p,l) are the (x,y) pixel coordinates in the source frame |
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151 | |
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152 | date = proctime(); |
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153 | PRINTF("\n*** Starting transpose for frame %d at cycle %d\n", frame, date); |
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154 | TRSP_START[cluster_id][local_id] = date; |
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155 | |
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156 | unsigned int nlt = NL / nglobal_procs; // Nombre de ligne à traiter par processeur |
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157 | unsigned int first = proc_id * nlt; // Index de la premiÚre ligne à traiter pour le proc courant (celui qui exécute le code) |
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158 | unsigned int last = first + nlt; // Index de la derniÚre ligne |
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159 | unsigned int nlines_clusters = NL / nclusters; // Nombre de lignes à traiter par cluster |
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160 | unsigned int npix_clusters = NP / nclusters; // Nombre de pixels par ligne à traiter par cluster |
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161 | |
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162 | for (l = first; l < last; l++){ |
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163 | PRINTF(" - processing line %d\n", l); |
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164 | for (p = 0; p < NP; p++){ |
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165 | unsigned int source_index = (l % nlines_clusters) * NP + p; |
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166 | unsigned int dest_cluster = p / npix_clusters; |
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167 | unsigned int dest_index = (p % npix_clusters) * NL + l; |
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168 | B[dest_cluster][dest_index] = A[cluster_id][source_index]; |
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169 | } |
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170 | } |
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171 | |
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172 | date = proctime(); |
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173 | PRINTF("*** Completing transpose for frame %d at cycle %d\n", frame, date); |
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174 | TRSP_END[cluster_id][local_id] = date; |
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175 | |
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176 | barrier_wait(1); |
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177 | |
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178 | // parallel display from B[c] to frame buffer |
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179 | // each processor uses its private dma to display NL*NP/nglobal_procs pixels |
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180 | |
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181 | date = proctime(); |
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182 | PRINTF("\n*** Starting display for frame %d at cycle %d\n", frame, date); |
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183 | DISP_START[cluster_id][local_id] = date; |
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184 | |
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185 | unsigned int npxt = npixels / nglobal_procs; // number of pixels per proc |
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186 | if (npixels - npxt * nglobal_procs != 0){ |
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187 | tty_printf("*** Error line %d\n", __LINE__); |
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188 | exit(); |
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189 | } |
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190 | tty_printf(" npxt : %d\n", npxt); |
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191 | |
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192 | if (fb_write(npxt * proc_id, B[cluster_id] + npxt * local_id, npxt)){ |
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193 | tty_printf("[%d]: echec fb_sync_write\n", proc_id); |
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194 | exit(); |
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195 | } |
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196 | |
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197 | PRINTF(" After fb_write and before fb_completed\n"); |
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198 | |
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199 | if (fb_completed()){ |
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200 | tty_printf("[%d]: echec fb_completed\n", proc_id); |
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201 | exit(); |
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202 | } |
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203 | |
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204 | date = proctime(); |
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205 | PRINTF("*** Completing display for frame %d at cycle %d\n", frame, date); |
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206 | DISP_END[cluster_id][local_id] = date; |
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207 | |
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208 | barrier_wait(2); |
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209 | |
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210 | // Instrumentation (done by processor 0 in cluster 0) |
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211 | if (local_id == 0){ |
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212 | date = proctime(); |
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213 | PRINTF("\n*** Starting Instrumentation for frame %d at cycle %d\n\n", frame, date); |
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214 | |
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215 | int cc, pp; |
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216 | unsigned int min_load_start = INT_MAX; |
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217 | unsigned int max_load_start = 0; |
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218 | unsigned int min_load_ended = INT_MAX; |
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219 | unsigned int max_load_ended = 0; |
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220 | unsigned int min_trsp_start = INT_MAX; |
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221 | unsigned int max_trsp_start = 0; |
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222 | unsigned int min_trsp_ended = INT_MAX; |
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223 | unsigned int max_trsp_ended = 0; |
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224 | unsigned int min_disp_start = INT_MAX; |
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225 | unsigned int max_disp_start = 0; |
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226 | unsigned int min_disp_ended = INT_MAX; |
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227 | unsigned int max_disp_ended = 0; |
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228 | |
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229 | for (cc = 0; cc < nclusters; cc++){ |
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230 | for (pp = 0; pp < nlocal_procs; pp++){ |
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231 | if (LOAD_START[cc][pp] < min_load_start){ |
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232 | min_load_start = LOAD_START[cc][pp]; |
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233 | } |
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234 | if (LOAD_START[cc][pp] > max_load_start){ |
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235 | max_load_start = LOAD_START[cc][pp]; |
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236 | } |
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237 | if (LOAD_END[cc][pp] < min_load_ended){ |
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238 | min_load_ended = LOAD_END[cc][pp]; |
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239 | } |
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240 | if (LOAD_END[cc][pp] > max_load_ended){ |
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241 | max_load_ended = LOAD_END[cc][pp]; |
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242 | } |
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243 | |
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244 | if (TRSP_START[cc][pp] < min_trsp_start){ |
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245 | min_trsp_start = TRSP_START[cc][pp]; |
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246 | } |
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247 | if (TRSP_START[cc][pp] > max_trsp_start){ |
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248 | max_trsp_start = TRSP_START[cc][pp]; |
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249 | } |
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250 | if (TRSP_END[cc][pp] < min_trsp_ended){ |
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251 | min_trsp_ended = TRSP_END[cc][pp]; |
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252 | } |
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253 | if (TRSP_END[cc][pp] > max_trsp_ended){ |
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254 | max_trsp_ended = TRSP_END[cc][pp]; |
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255 | } |
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256 | |
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257 | if (DISP_START[cc][pp] < min_disp_start){ |
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258 | min_disp_start = DISP_START[cc][pp]; |
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259 | } |
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260 | if (DISP_START[cc][pp] > max_disp_start){ |
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261 | max_disp_start = DISP_START[cc][pp]; |
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262 | } |
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263 | if (DISP_END[cc][pp] < min_disp_ended){ |
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264 | min_disp_ended = DISP_END[cc][pp]; |
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265 | } |
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266 | if (DISP_END[cc][pp] > max_disp_ended){ |
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267 | max_disp_ended = DISP_END[cc][pp]; |
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268 | } |
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269 | } |
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270 | } |
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271 | |
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272 | PRINTF(" - LOAD_START : min = %d / max = %d / med = %d / delta = %d\n", |
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273 | min_load_start, max_load_start, (min_load_start+max_load_start)/2, max_load_start-min_load_start); |
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274 | PRINTF(" - LOAD_END : min = %d / max = %d / med = %d / delta = %d\n", |
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275 | min_load_ended, max_load_ended, (min_load_ended+max_load_ended)/2, max_load_ended-min_load_ended); |
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276 | |
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277 | PRINTF(" - TRSP_START : min = %d / max = %d / med = %d / delta = %d\n", |
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278 | min_trsp_start, max_trsp_start, (min_trsp_start+max_trsp_start)/2, max_trsp_start-min_trsp_start); |
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279 | PRINTF(" - TRSP_END : min = %d / max = %d / med = %d / delta = %d\n", |
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280 | min_trsp_ended, max_trsp_ended, (min_trsp_ended+max_trsp_ended)/2, max_trsp_ended-min_trsp_ended); |
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281 | |
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282 | PRINTF(" - DISP_START : min = %d / max = %d / med = %d / delta = %d\n", |
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283 | min_disp_start, max_disp_start, (min_disp_start+max_disp_start)/2, max_disp_start-min_disp_start); |
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284 | PRINTF(" - DISP_END : min = %d / max = %d / med = %d / delta = %d\n", |
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285 | min_disp_ended, max_disp_ended, (min_disp_ended+max_disp_ended)/2, max_disp_ended-min_disp_ended); |
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286 | |
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287 | PRINTF(" - BARRIER TRSP/DISP = %d\n", min_disp_start - max_trsp_ended); |
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288 | } |
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289 | frame++; |
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290 | |
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291 | } // end while frame |
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292 | |
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293 | PRINTF("*** End of main ***\n"); |
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294 | |
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295 | while(1); |
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296 | } // end main() |
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297 | |
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298 | // Local Variables: |
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299 | // tab-width: 3 |
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300 | // c-basic-offset: 3 |
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301 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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302 | // indent-tabs-mode: nil |
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303 | // End: |
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304 | |
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305 | // vim: filetype=cpp:expandtab:shiftwidth=3:tabstop=3:softtabstop=3 |
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306 | |
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307 | |
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308 | |
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