1 | |
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2 | #include "hard_config.h" |
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3 | #include "stdio.h" |
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4 | #include "limits.h" |
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5 | #include "../giet_tsar/block_device.h" |
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6 | |
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7 | #define NL 128 |
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8 | #define NP 128 |
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9 | #define NB_IMAGES 5 |
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10 | |
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11 | // Only processor 0 in each cluster access TTY |
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12 | #define PRINTF(...) ({ if (lpid == 0) { _tty_printf(__VA_ARGS__); } }) |
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13 | |
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14 | #define DISPLAY_OK 1 // enable display on frame buffer when non zero |
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15 | #define CHECK_VERBOSE !DISPLAY_OK // display a detailed check on TTY when non zero |
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16 | #define INSTRUMENTATION_OK 0 // display statistcs on TTY when non zero |
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17 | |
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18 | // tricks to read some addresses from ldscript |
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19 | extern struct plaf seg_ioc_base; |
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20 | extern struct plaf seg_heap_base; |
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21 | |
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22 | // global variables stored in seg_data (cluster 0) |
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23 | |
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24 | // instrumentation counters (for each processor) |
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25 | unsigned int LOAD_START[256][4]; |
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26 | unsigned int LOAD_END [256][4]; |
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27 | unsigned int TRSP_START[256][4]; |
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28 | unsigned int TRSP_END [256][4]; |
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29 | unsigned int DISP_START[256][4]; |
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30 | unsigned int DISP_END [256][4]; |
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31 | |
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32 | // checksum variables (used by proc(0,0,0) only |
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33 | unsigned check_line_before[NL]; |
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34 | unsigned check_line_after[NL]; |
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35 | |
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36 | ///////////// |
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37 | void main() |
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38 | { |
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39 | unsigned int image = 0; |
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40 | |
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41 | unsigned int l; // line index for loops |
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42 | unsigned int p; // pixel index for loops |
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43 | unsigned int block_size = _ioc_get_blocksize(); // get IOC block size |
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44 | unsigned int proc_id = _procid(); // processor id |
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45 | unsigned int nclusters = X_SIZE*Y_SIZE; // number of clusters |
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46 | unsigned int lpid = proc_id % NB_PROCS_MAX; // local processor id |
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47 | unsigned int cluster_xy = proc_id / NB_PROCS_MAX; // cluster index (8 bits format) |
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48 | unsigned int x = cluster_xy >> Y_WIDTH; // x coordinate |
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49 | unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1); // y coordinate |
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50 | unsigned int ntasks = nclusters * NB_PROCS_MAX; // number of tasks |
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51 | unsigned int npixels = NP * NL; // number of pixel per image |
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52 | unsigned int nblocks = npixels / block_size; // number of blocks per image |
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53 | |
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54 | // task_id is a "continuous" index for the the task running on processor (x,y,lpid) |
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55 | unsigned int task_id = (((x * Y_SIZE) + y) * NB_PROCS_MAX) + lpid; |
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56 | |
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57 | // cluster_id is a "continuous" index for cluster(x,y) |
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58 | unsigned int cluster_id = (x * Y_SIZE) + y; |
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59 | |
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60 | PRINTF("\n *** Proc [%d,%d,0] enters main at cycle %d ***\n\n", |
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61 | x, y, _proctime()); |
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62 | |
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63 | // parameters checking |
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64 | if ((NB_PROCS_MAX != 1) && (NB_PROCS_MAX != 2) && (NB_PROCS_MAX != 4)) |
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65 | { |
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66 | PRINTF("NB_PROCS_MAX must be 1, 2 or 4\n"); |
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67 | _exit(); |
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68 | } |
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69 | if ((nclusters != 1) && (nclusters != 2) && (nclusters != 4) && (nclusters != 8) && |
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70 | (nclusters != 16) && (nclusters != 32) && (nclusters != 64) && (nclusters != 128) && |
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71 | (nclusters != 256)) |
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72 | { |
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73 | PRINTF("NB_CLUSTERS must be a power of 1 between 1 and 256\n"); |
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74 | _exit(); |
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75 | } |
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76 | |
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77 | // pointers on the distributed buffers containing the images, |
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78 | // allocated in the heap segment: each buffer contains 256 Kbytes |
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79 | unsigned char* buf_in = (unsigned char*)&seg_heap_base; |
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80 | unsigned char* buf_out = buf_in + 0x00100000; |
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81 | |
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82 | PRINTF("NB_CLUSTERS = %d\n", nclusters); |
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83 | PRINTF("NB_LOCAL_PROCS = %d\n", NB_PROCS_MAX); |
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84 | PRINTF("NB_TASKS = %d\n", ntasks); |
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85 | PRINTF("NB_PIXELS = %d\n", npixels); |
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86 | PRINTF("BLOCK_SIZE = %d\n", block_size); |
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87 | PRINTF("NB_BLOCKS = %d\n\n", nblocks); |
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88 | |
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89 | PRINTF("*** Proc 0 in cluster [%d,%d] starts barrier init at cycle %d\n", |
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90 | x, y, _proctime()); |
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91 | |
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92 | // barriers initialization |
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93 | _barrier_init(0, ntasks); |
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94 | _barrier_init(1, ntasks); |
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95 | _barrier_init(2, ntasks); |
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96 | _barrier_init(3, ntasks); |
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97 | |
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98 | PRINTF("*** Proc [%d,%d,0] completes barrier init at cycle %d\n", |
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99 | x, y, _proctime()); |
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100 | |
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101 | // Main loop (on images) |
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102 | while (image < NB_IMAGES) |
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103 | { |
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104 | // pseudo parallel load from disk to buf_in buffer : nblocks/nclusters blocks |
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105 | // only task running on processor with (lpid == 0) does it |
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106 | |
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107 | LOAD_START[cluster_id][lpid] = _proctime(); |
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108 | |
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109 | if (lpid == 0) |
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110 | { |
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111 | PRINTF("\n*** Proc [%d,%d,0] starts load for image %d at cycle %d\n", |
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112 | x, y, image, _proctime() ); |
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113 | |
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114 | _ioc_read( ((image * nblocks) + ((nblocks * cluster_id) / nclusters)), |
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115 | buf_in, |
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116 | (nblocks / nclusters), |
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117 | cluster_xy ); |
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118 | |
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119 | _ioc_completed(); |
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120 | |
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121 | PRINTF("*** Proc [%d,%d,0] completes load for image %d at cycle %d\n", |
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122 | x, y, image, _proctime() ); |
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123 | } |
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124 | |
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125 | LOAD_END[cluster_id][lpid] = _proctime(); |
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126 | |
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127 | |
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128 | _tty_printf("*** Proc [%d,%d,%d] barrier wait (0)\n", x, y, lpid); |
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129 | _barrier_wait(0); |
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130 | |
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131 | // parallel transpose from buf_in to buf_out buffers |
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132 | // each processor makes the transposition for (NL/ntasks) lines |
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133 | // (p,l) are the pixel coordinates in the source image |
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134 | |
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135 | PRINTF("\n*** proc [%d,%d,0] starts transpose for image %d at cycle %d\n", |
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136 | x, y, image, _proctime()); |
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137 | |
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138 | TRSP_START[cluster_id][lpid] = _proctime(); |
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139 | |
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140 | unsigned int nlt = NL / ntasks; // number of lines per processor |
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141 | unsigned int first = task_id * nlt; // first line index |
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142 | unsigned int last = first + nlt; // last line index |
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143 | unsigned int nlines_clusters = NL / nclusters; // number of lines per cluster |
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144 | unsigned int npix_clusters = NP / nclusters; // number of pixels per cluster |
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145 | |
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146 | unsigned int src_cluster; |
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147 | unsigned int src_index; |
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148 | unsigned int dst_cluster; |
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149 | unsigned int dst_index; |
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150 | |
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151 | unsigned int word; |
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152 | |
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153 | for (l = first; l < last; l++) |
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154 | { |
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155 | PRINTF(" - processing line %d\n", l); |
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156 | |
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157 | check_line_before[l] = 0; |
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158 | |
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159 | // in each iteration we read one word an write four bytes |
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160 | for (p = 0 ; p < NP ; p = p+4) |
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161 | { |
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162 | // read one word, with extended address from local buffer |
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163 | src_cluster = cluster_xy; |
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164 | src_index = (l % nlines_clusters) * NP + p; |
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165 | word = _word_extended_read( src_cluster, |
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166 | (unsigned int)&buf_in[src_index] ); |
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167 | |
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168 | unsigned char byte0 = (unsigned char)( word & 0x000000FF); |
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169 | unsigned char byte1 = (unsigned char)((word>>8) & 0x000000FF); |
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170 | unsigned char byte2 = (unsigned char)((word>>16) & 0x000000FF); |
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171 | unsigned char byte3 = (unsigned char)((word>>24) & 0x000000FF); |
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172 | |
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173 | // compute checksum |
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174 | check_line_before[l] = check_line_before[l] + byte0 + byte1 + byte2 + byte3; |
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175 | |
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176 | // write four bytes with extended address to four remote buffers |
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177 | dst_cluster = (((p / npix_clusters) / Y_SIZE) << Y_WIDTH) + |
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178 | ((p / npix_clusters) % Y_SIZE); |
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179 | dst_index = (p % npix_clusters) * NL + l; |
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180 | _byte_extended_write( dst_cluster, |
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181 | (unsigned int)&buf_out[dst_index], |
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182 | byte0 ); |
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183 | |
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184 | dst_cluster = ((((p+1) / npix_clusters) / Y_SIZE) << Y_WIDTH) + |
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185 | (((p+1) / npix_clusters) % Y_SIZE); |
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186 | dst_index = ((p+1) % npix_clusters) * NL + l; |
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187 | _byte_extended_write( dst_cluster, |
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188 | (unsigned int)&buf_out[dst_index], |
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189 | byte1 ); |
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190 | |
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191 | dst_cluster = ((((p+2) / npix_clusters) / Y_SIZE) << Y_WIDTH) + |
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192 | (((p+2) / npix_clusters) % Y_SIZE); |
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193 | dst_index = ((p+2) % npix_clusters) * NL + l; |
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194 | _byte_extended_write( dst_cluster, |
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195 | (unsigned int)&buf_out[dst_index], |
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196 | byte2 ); |
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197 | |
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198 | dst_cluster = ((((p+3) / npix_clusters) / Y_SIZE) << Y_WIDTH) + |
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199 | (((p+3) / npix_clusters) % Y_SIZE); |
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200 | dst_index = ((p+3) % npix_clusters) * NL + l; |
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201 | _byte_extended_write( dst_cluster, |
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202 | (unsigned int)&buf_out[dst_index], |
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203 | byte3 ); |
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204 | } |
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205 | } |
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206 | |
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207 | PRINTF("*** proc [%d,%d,0] complete transpose for image %d at cycle %d\n", |
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208 | x, y, image, _proctime() ); |
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209 | |
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210 | TRSP_END[cluster_id][lpid] = _proctime(); |
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211 | |
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212 | _barrier_wait(1); |
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213 | |
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214 | // optional parallel display from local buf_out to frame buffer |
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215 | |
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216 | if ( DISPLAY_OK ) |
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217 | { |
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218 | PRINTF("\n*** proc [%d,%d,0] starts display for image %d at cycle %d\n", |
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219 | x, y, image, _proctime() ); |
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220 | |
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221 | DISP_START[cluster_id][lpid] = _proctime(); |
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222 | |
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223 | unsigned int npxt = npixels / ntasks; // number of pixels per task |
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224 | unsigned int buffer = (unsigned int)buf_out + npxt*lpid; |
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225 | |
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226 | _fb_sync_write( npxt * task_id, buffer, npxt, cluster_xy ); |
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227 | |
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228 | PRINTF("*** Proc [%d,%d,0] completes display for image %d at cycle %d\n", |
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229 | x, y, image, _proctime() ); |
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230 | |
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231 | DISP_END[cluster_id][lpid] = _proctime(); |
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232 | |
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233 | _barrier_wait(2); |
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234 | } |
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235 | |
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236 | // checksum (done by processor 0 in each cluster) |
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237 | |
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238 | if ( lpid == 0 ) |
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239 | { |
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240 | PRINTF("\n*** Proc [%d,%d,0] starts checks for image %d at cycle %d\n\n", |
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241 | x, y, image, _proctime() ); |
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242 | |
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243 | unsigned int success = 1; |
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244 | unsigned int start = cluster_id * (NL / nclusters); |
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245 | unsigned int stop = start + (NL / nclusters); |
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246 | |
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247 | for ( l = start ; l < stop ; l++ ) |
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248 | { |
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249 | check_line_after[l] = 0; |
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250 | |
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251 | for ( p = 0 ; p < NP ; p++ ) |
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252 | { |
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253 | // read one byte in remote buffer |
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254 | src_cluster = (((p / npix_clusters) / Y_SIZE) << Y_WIDTH) + |
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255 | ((p / npix_clusters) % Y_SIZE); |
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256 | src_index = (p % npix_clusters) * NL + l; |
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257 | |
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258 | unsigned char byte = _byte_extended_read( src_cluster, |
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259 | (unsigned int)&buf_out[src_index] ); |
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260 | |
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261 | check_line_after[l] = check_line_after[l] + byte; |
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262 | } |
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263 | |
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264 | if( CHECK_VERBOSE ) |
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265 | { |
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266 | PRINTF(" - l = %d / before = %d / after = %d \n", |
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267 | l, check_line_before[l], check_line_after[l] ); |
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268 | } |
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269 | |
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270 | if ( check_line_before[l] != check_line_after[l] ) success = 0; |
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271 | } |
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272 | |
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273 | if ( success ) PRINTF("\n*** proc [%d,%d,0] : CHECKSUM OK \n\n", x, y); |
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274 | else PRINTF("\n*** proc [%d,%d,0] : CHECKSUM KO \n\n", x, y); |
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275 | } |
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276 | |
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277 | // instrumentation ( done by processor [0,0,0] |
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278 | |
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279 | if ( (proc_id == 0) && INSTRUMENTATION_OK ) |
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280 | { |
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281 | int cc, pp; |
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282 | unsigned int min_load_start = INT_MAX; |
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283 | unsigned int max_load_start = 0; |
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284 | unsigned int min_load_ended = INT_MAX; |
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285 | unsigned int max_load_ended = 0; |
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286 | unsigned int min_trsp_start = INT_MAX; |
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287 | unsigned int max_trsp_start = 0; |
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288 | unsigned int min_trsp_ended = INT_MAX; |
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289 | unsigned int max_trsp_ended = 0; |
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290 | unsigned int min_disp_start = INT_MAX; |
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291 | unsigned int max_disp_start = 0; |
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292 | unsigned int min_disp_ended = INT_MAX; |
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293 | unsigned int max_disp_ended = 0; |
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294 | |
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295 | for (cc = 0; cc < nclusters; cc++) |
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296 | { |
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297 | for (pp = 0; pp < NB_PROCS_MAX; pp++) |
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298 | { |
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299 | if (LOAD_START[cc][pp] < min_load_start) min_load_start = LOAD_START[cc][pp]; |
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300 | if (LOAD_START[cc][pp] > max_load_start) max_load_start = LOAD_START[cc][pp]; |
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301 | if (LOAD_END[cc][pp] < min_load_ended) min_load_ended = LOAD_END[cc][pp]; |
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302 | if (LOAD_END[cc][pp] > max_load_ended) max_load_ended = LOAD_END[cc][pp]; |
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303 | if (TRSP_START[cc][pp] < min_trsp_start) min_trsp_start = TRSP_START[cc][pp]; |
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304 | if (TRSP_START[cc][pp] > max_trsp_start) max_trsp_start = TRSP_START[cc][pp]; |
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305 | if (TRSP_END[cc][pp] < min_trsp_ended) min_trsp_ended = TRSP_END[cc][pp]; |
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306 | if (TRSP_END[cc][pp] > max_trsp_ended) max_trsp_ended = TRSP_END[cc][pp]; |
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307 | if (DISP_START[cc][pp] < min_disp_start) min_disp_start = DISP_START[cc][pp]; |
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308 | if (DISP_START[cc][pp] > max_disp_start) max_disp_start = DISP_START[cc][pp]; |
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309 | if (DISP_END[cc][pp] < min_disp_ended) min_disp_ended = DISP_END[cc][pp]; |
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310 | if (DISP_END[cc][pp] > max_disp_ended) max_disp_ended = DISP_END[cc][pp]; |
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311 | } |
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312 | } |
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313 | |
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314 | PRINTF(" - LOAD_START : min = %d / max = %d / med = %d / delta = %d\n", |
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315 | min_load_start, max_load_start, (min_load_start+max_load_start)/2, |
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316 | max_load_start-min_load_start); |
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317 | |
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318 | PRINTF(" - LOAD_END : min = %d / max = %d / med = %d / delta = %d\n", |
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319 | min_load_ended, max_load_ended, (min_load_ended+max_load_ended)/2, |
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320 | max_load_ended-min_load_ended); |
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321 | |
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322 | PRINTF(" - TRSP_START : min = %d / max = %d / med = %d / delta = %d\n", |
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323 | min_trsp_start, max_trsp_start, (min_trsp_start+max_trsp_start)/2, |
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324 | max_trsp_start-min_trsp_start); |
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325 | |
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326 | PRINTF(" - TRSP_END : min = %d / max = %d / med = %d / delta = %d\n", |
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327 | min_trsp_ended, max_trsp_ended, (min_trsp_ended+max_trsp_ended)/2, |
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328 | max_trsp_ended-min_trsp_ended); |
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329 | |
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330 | PRINTF(" - DISP_START : min = %d / max = %d / med = %d / delta = %d\n", |
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331 | min_disp_start, max_disp_start, (min_disp_start+max_disp_start)/2, |
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332 | max_disp_start-min_disp_start); |
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333 | |
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334 | PRINTF(" - DISP_END : min = %d / max = %d / med = %d / delta = %d\n", |
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335 | min_disp_ended, max_disp_ended, (min_disp_ended+max_disp_ended)/2, |
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336 | max_disp_ended-min_disp_ended); |
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337 | } |
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338 | |
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339 | image++; |
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340 | |
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341 | _barrier_wait( 3 ); |
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342 | } // end while image |
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343 | |
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344 | |
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345 | _exit(); |
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346 | |
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347 | } // end main() |
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348 | |
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349 | // Local Variables: |
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350 | // tab-width: 3 |
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351 | // c-basic-offset: 3 |
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352 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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353 | // indent-tabs-mode: nil |
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354 | // End: |
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355 | |
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356 | // vim: filetype=cpp:expandtab:shiftwidth=3:tabstop=3:softtabstop=3 |
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357 | |
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358 | |
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359 | |
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