[708] | 1 | /////////////////////////////////////////////////////////////////////////////////////// |
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| 2 | // File : convol.c |
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| 3 | // Date : june 2014 |
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| 4 | // author : Alain Greiner |
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| 5 | /////////////////////////////////////////////////////////////////////////////////////// |
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| 6 | // This multi-threaded application implements a 2D convolution product. |
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| 7 | // It can run on a multi-processors, multi-clusters architecture, with one thread |
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| 8 | // per processor, and uses the POSIX threads API. |
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| 9 | // |
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| 10 | // The main() function can be launched on any processor P[x,y,l]. |
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| 11 | // It makes the initialisations, launch (N-1) threads to run the execute() function |
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| 12 | // on the (N-1) other processors than P[x,y,l], call himself the execute() function, |
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| 13 | // and finally call the instrument() function to display instrumentation results |
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| 14 | // when the parallel execution is completed. |
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| 15 | // |
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| 16 | // The convolution kernel is [201]*[35] pixels, but it can be factored in two |
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| 17 | // independant line and column convolution products. |
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| 18 | // The five buffers containing the image are distributed in clusters. |
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| 19 | // |
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| 20 | // The (1024 * 1024) pixels image is read from a file (2 bytes per pixel). |
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| 21 | // |
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| 22 | // - number of clusters containing processors must be power of 2 no larger than 256. |
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| 23 | // - number of processors per cluster must be power of 2 no larger than 8. |
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| 24 | /////////////////////////////////////////////////////////////////////////////////////// |
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| 25 | |
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| 26 | #include "stdio.h" |
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| 27 | #include "stdlib.h" |
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| 28 | #include "user_barrier.h" |
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| 29 | #include "malloc.h" |
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| 30 | |
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| 31 | #define USE_SQT_BARRIER 1 |
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| 32 | #define VERBOSE 1 |
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| 33 | #define SUPER_VERBOSE 0 |
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| 34 | |
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| 35 | #define X_SIZE_MAX 16 |
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| 36 | #define Y_SIZE_MAX 16 |
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| 37 | #define PROCS_MAX 8 |
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| 38 | #define CLUSTERS_MAX (X_SIZE_MAX * Y_SIZE_MAX) |
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| 39 | |
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| 40 | #define INITIAL_DISPLAY_ENABLE 0 |
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| 41 | #define FINAL_DISPLAY_ENABLE 1 |
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| 42 | |
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| 43 | #define PIXEL_SIZE 2 |
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| 44 | #define NL 1024 |
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| 45 | #define NP 1024 |
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| 46 | #define NB_PIXELS (NP * NL) |
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| 47 | #define FRAME_SIZE (NB_PIXELS * PIXEL_SIZE) |
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| 48 | |
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| 49 | #define SEEK_SET 0 |
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| 50 | |
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| 51 | #define TA(c,l,p) (A[c][((NP) * (l)) + (p)]) |
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| 52 | #define TB(c,p,l) (B[c][((NL) * (p)) + (l)]) |
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| 53 | #define TC(c,l,p) (C[c][((NP) * (l)) + (p)]) |
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| 54 | #define TD(c,l,p) (D[c][((NP) * (l)) + (p)]) |
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| 55 | #define TZ(c,l,p) (Z[c][((NP) * (l)) + (p)]) |
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| 56 | |
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| 57 | #define max(x,y) ((x) > (y) ? (x) : (y)) |
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| 58 | #define min(x,y) ((x) < (y) ? (x) : (y)) |
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| 59 | |
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| 60 | // macro to use a shared TTY |
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| 61 | #define printf(...); { lock_acquire( &tty_lock ); \ |
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| 62 | giet_tty_printf(__VA_ARGS__); \ |
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| 63 | lock_release( &tty_lock ); } |
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| 64 | |
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| 65 | ////////////////////////////////////////////////////////// |
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| 66 | // global variables stored in seg_data in cluster[0,0] |
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| 67 | ////////////////////////////////////////////////////////// |
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| 68 | |
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| 69 | // Instrumentation counters (cluster_id, lpid] |
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| 70 | |
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| 71 | unsigned int START[CLUSTERS_MAX][PROCS_MAX]; |
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| 72 | unsigned int H_BEG[CLUSTERS_MAX][PROCS_MAX]; |
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| 73 | unsigned int H_END[CLUSTERS_MAX][PROCS_MAX]; |
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| 74 | unsigned int V_BEG[CLUSTERS_MAX][PROCS_MAX]; |
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| 75 | unsigned int V_END[CLUSTERS_MAX][PROCS_MAX]; |
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| 76 | unsigned int D_BEG[CLUSTERS_MAX][PROCS_MAX]; |
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| 77 | unsigned int D_END[CLUSTERS_MAX][PROCS_MAX]; |
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| 78 | |
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| 79 | // global synchronization barrier |
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| 80 | |
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| 81 | #if USE_SQT_BARRIER |
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| 82 | giet_sqt_barrier_t barrier; |
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| 83 | #else |
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| 84 | giet_barrier_t barrier; |
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| 85 | #endif |
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| 86 | |
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| 87 | volatile unsigned int barrier_init_ok = 0; |
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| 88 | volatile unsigned int load_image_ok = 0; |
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| 89 | volatile unsigned int instrumentation_ok = 0; |
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| 90 | |
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| 91 | // lock protecting access to shared TTY |
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| 92 | user_lock_t tty_lock; |
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| 93 | |
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| 94 | // global pointers on distributed buffers in all clusters |
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| 95 | unsigned short * GA[CLUSTERS_MAX]; |
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| 96 | int * GB[CLUSTERS_MAX]; |
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| 97 | int * GC[CLUSTERS_MAX]; |
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| 98 | int * GD[CLUSTERS_MAX]; |
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| 99 | unsigned char * GZ[CLUSTERS_MAX]; |
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| 100 | |
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| 101 | |
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| 102 | |
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| 103 | //////////////////////////////////////////// |
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| 104 | __attribute__ ((constructor)) void execute() |
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| 105 | //////////////////////////////////////////// |
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| 106 | { |
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| 107 | ///////////////////////////////////////////////////////////////////////////////////// |
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| 108 | // Each thread[x,y,p] initialises the convolution kernel parameters in local stack. |
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| 109 | // The values defined in the next 12 lines are Philips proprietary information. |
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| 110 | ///////////////////////////////////////////////////////////////////////////////////// |
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| 111 | |
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| 112 | int vnorm = 115; |
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| 113 | int vf[35] = { 1, 1, 2, 2, 2, |
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| 114 | 2, 3, 3, 3, 4, |
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| 115 | 4, 4, 4, 5, 5, |
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| 116 | 5, 5, 5, 5, 5, |
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| 117 | 5, 5, 4, 4, 4, |
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| 118 | 4, 3, 3, 3, 2, |
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| 119 | 2, 2, 2, 1, 1 }; |
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| 120 | |
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| 121 | int hrange = 100; |
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| 122 | int hnorm = 201; |
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| 123 | |
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| 124 | // get plat-form parameters |
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| 125 | unsigned int x_size; // number of clusters in a row |
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| 126 | unsigned int y_size; // number of clusters in a column |
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| 127 | unsigned int nprocs; // number of processors per cluster |
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| 128 | giet_procs_number( &x_size , &y_size , &nprocs ); |
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| 129 | |
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| 130 | // get processor identifiers |
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| 131 | unsigned int x; // x coordinate |
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| 132 | unsigned int y; // y coordinate |
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| 133 | unsigned int lpid; // local proc index |
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| 134 | giet_proc_xyp( &x, &y, &lpid ); |
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| 135 | |
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| 136 | // indexes for loops |
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| 137 | int c; // cluster index |
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| 138 | int l; // line index |
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| 139 | int p; // pixel index |
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| 140 | int z; // vertical filter index |
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| 141 | |
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| 142 | int file = 0; // file descriptor |
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| 143 | unsigned int nclusters = x_size * y_size; // number of clusters |
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| 144 | unsigned int cluster_id = (x * y_size) + y; // continuous cluster index |
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| 145 | unsigned int thread_id = (cluster_id * nprocs) + lpid; // continuous thread index |
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| 146 | unsigned int nthreads = nclusters * nprocs; // number of threads |
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| 147 | unsigned int frame_size = FRAME_SIZE; // total size (bytes) |
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| 148 | unsigned int lines_per_thread = NL / nthreads; // lines per thread |
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| 149 | unsigned int lines_per_cluster = NL / nclusters; // lines per cluster |
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| 150 | unsigned int pixels_per_thread = NP / nthreads; // columns per thread |
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| 151 | unsigned int pixels_per_cluster = NP / nclusters; // columns per cluster |
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| 152 | |
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| 153 | int first, last; |
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| 154 | |
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| 155 | unsigned int date = giet_proctime(); |
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| 156 | START[cluster_id][lpid] = date; |
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| 157 | |
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| 158 | ///////////////////////////////////////////////////////////////////// |
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| 159 | // Each thread[x][y][0] allocate the global buffers in cluster(x,y) |
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| 160 | ///////////////////////////////////////////////////////////////////// |
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| 161 | if ( lpid == 0 ) |
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| 162 | { |
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| 163 | |
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| 164 | #if VERBOSE |
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| 165 | printf( "\n[CONVOL] thread[%d,%d,%d] enters malloc at cycle %d\n", |
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| 166 | x,y,lpid, date ); |
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| 167 | #endif |
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| 168 | |
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| 169 | GA[cluster_id] = remote_malloc( (FRAME_SIZE/nclusters) , x , y ); |
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| 170 | GB[cluster_id] = remote_malloc( (FRAME_SIZE/nclusters)*2 , x , y ); |
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| 171 | GC[cluster_id] = remote_malloc( (FRAME_SIZE/nclusters)*2 , x , y ); |
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| 172 | GD[cluster_id] = remote_malloc( (FRAME_SIZE/nclusters)*2 , x , y ); |
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| 173 | GZ[cluster_id] = remote_malloc( (FRAME_SIZE/nclusters)/2 , x , y ); |
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| 174 | |
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| 175 | #if VERBOSE |
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| 176 | printf( "\n[CONVOL] Shared Buffer Virtual Addresses in cluster(%d,%d)\n" |
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| 177 | "### GA = %x\n" |
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| 178 | "### GB = %x\n" |
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| 179 | "### GC = %x\n" |
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| 180 | "### GD = %x\n" |
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| 181 | "### GZ = %x\n", |
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| 182 | x, y, |
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| 183 | GA[cluster_id], |
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| 184 | GB[cluster_id], |
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| 185 | GC[cluster_id], |
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| 186 | GD[cluster_id], |
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| 187 | GZ[cluster_id] ); |
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| 188 | #endif |
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| 189 | } |
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| 190 | |
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| 191 | /////////////////////////////// |
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| 192 | #if USE_SQT_BARRIER |
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| 193 | sqt_barrier_wait( &barrier ); |
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| 194 | #else |
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| 195 | barrier_wait( &barrier ); |
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| 196 | #endif |
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| 197 | |
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| 198 | ////////////////////////////////////////////////////////////////////// |
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| 199 | // Each thread[x,y,p] initialise in its private stack a copy of the |
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| 200 | // arrays of pointers on the shared, distributed buffers. |
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| 201 | ////////////////////////////////////////////////////////////////////// |
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| 202 | |
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| 203 | unsigned short * A[CLUSTERS_MAX]; |
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| 204 | int * B[CLUSTERS_MAX]; |
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| 205 | int * C[CLUSTERS_MAX]; |
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| 206 | int * D[CLUSTERS_MAX]; |
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| 207 | unsigned char * Z[CLUSTERS_MAX]; |
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| 208 | |
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| 209 | for (c = 0; c < nclusters; c++) |
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| 210 | { |
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| 211 | A[c] = GA[c]; |
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| 212 | B[c] = GB[c]; |
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| 213 | C[c] = GC[c]; |
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| 214 | D[c] = GD[c]; |
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| 215 | Z[c] = GZ[c]; |
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| 216 | } |
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| 217 | |
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| 218 | ///////////////////////////////////////////////////////////////////////////// |
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| 219 | // Ech thread[x,y,0] open the file containing image, and load it from disk |
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| 220 | // to the local A[c] buffer (frame_size / nclusters loaded in each cluster). |
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| 221 | // Other threads are waiting on the init_ok condition. |
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| 222 | //////////////////////////////////////////////////////////////////////////// |
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| 223 | if ( lpid==0 ) |
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| 224 | { |
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| 225 | // open file |
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| 226 | file = giet_fat_open( "/misc/philips_1024.raw" , 0 ); |
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| 227 | if (file < 0 ) |
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| 228 | { |
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| 229 | printf("\n[CONVOL ERROR] thread[%d,%d,%d] " |
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| 230 | "cannot open file /misc/philips_1024.raw", |
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| 231 | x, y, lpid ); |
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| 232 | giet_pthread_exit( NULL ); |
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| 233 | } |
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| 234 | |
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| 235 | #if VERBOSE |
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| 236 | printf( "\n[CONVOL] thread[%d,%d,%d] open file /misc/philips_1024.raw at cycle %d\n", |
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| 237 | x, y, lpid, giet_proctime() ); |
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| 238 | #endif |
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| 239 | |
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| 240 | unsigned int offset = (frame_size/nclusters)*cluster_id; |
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| 241 | unsigned int size = frame_size/nclusters; |
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| 242 | |
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| 243 | if ( giet_fat_lseek( file, |
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| 244 | offset, |
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| 245 | SEEK_SET ) ) |
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| 246 | { |
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| 247 | printf("\n[CONVOL ERROR] thread[%d,%d,%d] " |
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| 248 | "cannot seek file /misc/philips_1024.raw", |
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| 249 | x, y, lpid ); |
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| 250 | giet_pthread_exit( NULL ); |
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| 251 | } |
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| 252 | |
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| 253 | if ( giet_fat_read( file, |
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| 254 | A[cluster_id], |
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| 255 | size ) != size ) |
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| 256 | { |
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| 257 | printf("\n[CONVOL ERROR] thread[%d,%d,%d] " |
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| 258 | "cannot read file /misc/philips_1024.raw", |
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| 259 | x, y, lpid ); |
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| 260 | giet_pthread_exit( NULL ); |
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| 261 | } |
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| 262 | |
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| 263 | #if VERBOSE |
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| 264 | printf( "\n[CONVOL] thread[%d,%d,%d] load file /misc/philips_1024.raw at cycle %d\n", |
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| 265 | x, y, lpid, giet_proctime() ); |
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| 266 | #endif |
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| 267 | |
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| 268 | } |
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| 269 | |
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| 270 | /////////////////////////////// |
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| 271 | #if USE_SQT_BARRIER |
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| 272 | sqt_barrier_wait( &barrier ); |
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| 273 | #else |
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| 274 | barrier_wait( &barrier ); |
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| 275 | #endif |
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| 276 | |
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| 277 | ///////////////////////////////////////////////////////////////////////////// |
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| 278 | // Optionnal parallel display of the initial image stored in A[c] buffers. |
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| 279 | // Eah thread[x,y,p] displays (NL/nthreads) lines. (one byte per pixel). |
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| 280 | ///////////////////////////////////////////////////////////////////////////// |
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| 281 | |
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| 282 | if ( INITIAL_DISPLAY_ENABLE ) |
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| 283 | { |
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| 284 | |
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| 285 | #if VERBOSE |
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| 286 | printf( "\n[CONVOL] thread[%d,%d,%d] starts initial display at cycle %d\n", |
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| 287 | x, y, lpid, giet_proctime() ); |
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| 288 | #endif |
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| 289 | |
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| 290 | unsigned int line; |
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| 291 | unsigned int offset = lines_per_thread * lpid; |
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| 292 | |
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| 293 | for ( l = 0 ; l < lines_per_thread ; l++ ) |
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| 294 | { |
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| 295 | line = offset + l; |
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| 296 | |
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| 297 | for ( p = 0 ; p < NP ; p++ ) |
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| 298 | { |
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| 299 | TZ(cluster_id, line, p) = (unsigned char)(TA(cluster_id, line, p) >> 8); |
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| 300 | } |
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| 301 | |
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| 302 | giet_fbf_sync_write( NP*(l + (thread_id * lines_per_thread) ), |
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| 303 | &TZ(cluster_id, line, 0), |
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| 304 | NP); |
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| 305 | } |
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| 306 | |
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| 307 | #if VERBOSE |
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| 308 | printf( "\n[CONVOL] thread[%d,%d,%d] completes initial display at cycle %d\n", |
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| 309 | x, y, lpid, giet_proctime() ); |
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| 310 | #endif |
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| 311 | |
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| 312 | //////////////////////////// |
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| 313 | #if USE_SQT_BARRIER |
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| 314 | sqt_barrier_wait( &barrier ); |
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| 315 | #else |
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| 316 | barrier_wait( &barrier ); |
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| 317 | #endif |
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| 318 | |
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| 319 | } |
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| 320 | |
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| 321 | //////////////////////////////////////////////////////// |
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| 322 | // parallel horizontal filter : |
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| 323 | // B <= transpose(FH(A)) |
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| 324 | // D <= A - FH(A) |
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| 325 | // Each thread computes (NL/nthreads) lines |
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| 326 | // The image must be extended : |
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| 327 | // if (z<0) TA(cluster_id,l,z) == TA(cluster_id,l,0) |
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| 328 | // if (z>NP-1) TA(cluster_id,l,z) == TA(cluster_id,l,NP-1) |
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| 329 | //////////////////////////////////////////////////////// |
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| 330 | |
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| 331 | date = giet_proctime(); |
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| 332 | H_BEG[cluster_id][lpid] = date; |
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| 333 | |
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| 334 | #if VERBOSE |
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| 335 | printf( "\n[CONVOL] thread[%d,%d,%d] starts horizontal filter" |
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| 336 | " at cycle %d\n", |
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| 337 | x, y, lpid, date ); |
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| 338 | #else |
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| 339 | if ( (x==0) && (y==0) && (lpid==0) ) |
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| 340 | printf( "\n[CONVOL] thread[0,0,0] starts horizontal filter" |
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| 341 | " at cycle %d\n", date ); |
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| 342 | #endif |
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| 343 | |
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| 344 | // l = absolute line index / p = absolute pixel index |
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| 345 | // first & last define which lines are handled by a given thread |
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| 346 | |
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| 347 | first = thread_id * lines_per_thread; |
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| 348 | last = first + lines_per_thread; |
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| 349 | |
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| 350 | for (l = first; l < last; l++) |
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| 351 | { |
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| 352 | // src_c and src_l are the cluster index and the line index for A & D |
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| 353 | int src_c = l / lines_per_cluster; |
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| 354 | int src_l = l % lines_per_cluster; |
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| 355 | |
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| 356 | // We use the specific values of the horizontal ep-filter for optimisation: |
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| 357 | // sum(p) = sum(p-1) + TA[p+hrange] - TA[p-hrange-1] |
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| 358 | // To minimize the number of tests, the loop on pixels is split in three domains |
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| 359 | |
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| 360 | int sum_p = (hrange + 2) * TA(src_c, src_l, 0); |
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| 361 | for (z = 1; z < hrange; z++) |
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| 362 | { |
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| 363 | sum_p = sum_p + TA(src_c, src_l, z); |
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| 364 | } |
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| 365 | |
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| 366 | // first domain : from 0 to hrange |
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| 367 | for (p = 0; p < hrange + 1; p++) |
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| 368 | { |
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| 369 | // dst_c and dst_p are the cluster index and the pixel index for B |
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| 370 | int dst_c = p / pixels_per_cluster; |
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| 371 | int dst_p = p % pixels_per_cluster; |
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| 372 | sum_p = sum_p + (int) TA(src_c, src_l, p + hrange) - (int) TA(src_c, src_l, 0); |
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| 373 | TB(dst_c, dst_p, l) = sum_p / hnorm; |
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| 374 | TD(src_c, src_l, p) = (int) TA(src_c, src_l, p) - sum_p / hnorm; |
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| 375 | } |
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| 376 | // second domain : from (hrange+1) to (NP-hrange-1) |
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| 377 | for (p = hrange + 1; p < NP - hrange; p++) |
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| 378 | { |
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| 379 | // dst_c and dst_p are the cluster index and the pixel index for B |
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| 380 | int dst_c = p / pixels_per_cluster; |
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| 381 | int dst_p = p % pixels_per_cluster; |
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| 382 | sum_p = sum_p + (int) TA(src_c, src_l, p + hrange) |
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| 383 | - (int) TA(src_c, src_l, p - hrange - 1); |
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| 384 | TB(dst_c, dst_p, l) = sum_p / hnorm; |
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| 385 | TD(src_c, src_l, p) = (int) TA(src_c, src_l, p) - sum_p / hnorm; |
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| 386 | } |
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| 387 | // third domain : from (NP-hrange) to (NP-1) |
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| 388 | for (p = NP - hrange; p < NP; p++) |
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| 389 | { |
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| 390 | // dst_c and dst_p are the cluster index and the pixel index for B |
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| 391 | int dst_c = p / pixels_per_cluster; |
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| 392 | int dst_p = p % pixels_per_cluster; |
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| 393 | sum_p = sum_p + (int) TA(src_c, src_l, NP - 1) |
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| 394 | - (int) TA(src_c, src_l, p - hrange - 1); |
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| 395 | TB(dst_c, dst_p, l) = sum_p / hnorm; |
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| 396 | TD(src_c, src_l, p) = (int) TA(src_c, src_l, p) - sum_p / hnorm; |
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| 397 | } |
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| 398 | |
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| 399 | #if SUPER_VERBOSE |
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| 400 | printf(" - line %d computed at cycle %d\n", l, giet_proctime() ); |
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| 401 | #endif |
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| 402 | |
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| 403 | } |
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| 404 | |
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| 405 | date = giet_proctime(); |
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| 406 | H_END[cluster_id][lpid] = date; |
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| 407 | |
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| 408 | #if VERBOSE |
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| 409 | printf( "\n[CONVOL] thread[%d,%d,%d] completes horizontal filter" |
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| 410 | " at cycle %d\n", |
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| 411 | x, y, lpid, date ); |
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| 412 | #else |
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| 413 | if ( (x==0) && (y==0) && (lpid==0) ) |
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| 414 | printf( "\n[CONVOL] thread[0,0,0] completes horizontal filter" |
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| 415 | " at cycle %d\n", date ); |
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| 416 | #endif |
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| 417 | |
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| 418 | ///////////////////////////// |
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| 419 | #if USE_SQT_BARRIER |
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| 420 | sqt_barrier_wait( &barrier ); |
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| 421 | #else |
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| 422 | barrier_wait( &barrier ); |
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| 423 | #endif |
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| 424 | |
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| 425 | |
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| 426 | /////////////////////////////////////////////////////////////// |
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| 427 | // parallel vertical filter : |
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| 428 | // C <= transpose(FV(B)) |
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| 429 | // Each thread computes (NP/nthreads) columns |
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| 430 | // The image must be extended : |
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| 431 | // if (l<0) TB(cluster_id,p,l) == TB(cluster_id,p,0) |
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| 432 | // if (l>NL-1) TB(cluster_id,p,l) == TB(cluster_id,p,NL-1) |
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| 433 | /////////////////////////////////////////////////////////////// |
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| 434 | |
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| 435 | date = giet_proctime(); |
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| 436 | V_BEG[cluster_id][lpid] = date; |
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| 437 | |
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| 438 | #if VERBOSE |
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| 439 | printf( "\n[CONVOL] thread[%d,%d,%d] starts vertical filter" |
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| 440 | " at cycle %d\n", |
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| 441 | x, y, lpid, date ); |
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| 442 | #else |
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| 443 | if ( (x==0) && (y==0) && (lpid==0) ) |
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| 444 | printf( "\n[CONVOL] thread[0,0,0] starts vertical filter" |
---|
| 445 | " at cycle %d\n", date ); |
---|
| 446 | #endif |
---|
| 447 | |
---|
| 448 | // l = absolute line index / p = absolute pixel index |
---|
| 449 | // first & last define which pixels are handled by a given thread |
---|
| 450 | |
---|
| 451 | first = thread_id * pixels_per_thread; |
---|
| 452 | last = first + pixels_per_thread; |
---|
| 453 | |
---|
| 454 | for (p = first; p < last; p++) |
---|
| 455 | { |
---|
| 456 | // src_c and src_p are the cluster index and the pixel index for B |
---|
| 457 | int src_c = p / pixels_per_cluster; |
---|
| 458 | int src_p = p % pixels_per_cluster; |
---|
| 459 | |
---|
| 460 | int sum_l; |
---|
| 461 | |
---|
| 462 | // We use the specific values of the vertical ep-filter |
---|
| 463 | // To minimize the number of tests, the NL lines are split in three domains |
---|
| 464 | |
---|
| 465 | // first domain : explicit computation for the first 18 values |
---|
| 466 | for (l = 0; l < 18; l++) |
---|
| 467 | { |
---|
| 468 | // dst_c and dst_l are the cluster index and the line index for C |
---|
| 469 | int dst_c = l / lines_per_cluster; |
---|
| 470 | int dst_l = l % lines_per_cluster; |
---|
| 471 | |
---|
| 472 | for (z = 0, sum_l = 0; z < 35; z++) |
---|
| 473 | { |
---|
| 474 | sum_l = sum_l + vf[z] * TB(src_c, src_p, max(l - 17 + z,0) ); |
---|
| 475 | } |
---|
| 476 | TC(dst_c, dst_l, p) = sum_l / vnorm; |
---|
| 477 | } |
---|
| 478 | // second domain |
---|
| 479 | for (l = 18; l < NL - 17; l++) |
---|
| 480 | { |
---|
| 481 | // dst_c and dst_l are the cluster index and the line index for C |
---|
| 482 | int dst_c = l / lines_per_cluster; |
---|
| 483 | int dst_l = l % lines_per_cluster; |
---|
| 484 | |
---|
| 485 | sum_l = sum_l + TB(src_c, src_p, l + 4) |
---|
| 486 | + TB(src_c, src_p, l + 8) |
---|
| 487 | + TB(src_c, src_p, l + 11) |
---|
| 488 | + TB(src_c, src_p, l + 15) |
---|
| 489 | + TB(src_c, src_p, l + 17) |
---|
| 490 | - TB(src_c, src_p, l - 5) |
---|
| 491 | - TB(src_c, src_p, l - 9) |
---|
| 492 | - TB(src_c, src_p, l - 12) |
---|
| 493 | - TB(src_c, src_p, l - 16) |
---|
| 494 | - TB(src_c, src_p, l - 18); |
---|
| 495 | |
---|
| 496 | TC(dst_c, dst_l, p) = sum_l / vnorm; |
---|
| 497 | } |
---|
| 498 | // third domain |
---|
| 499 | for (l = NL - 17; l < NL; l++) |
---|
| 500 | { |
---|
| 501 | // dst_c and dst_l are the cluster index and the line index for C |
---|
| 502 | int dst_c = l / lines_per_cluster; |
---|
| 503 | int dst_l = l % lines_per_cluster; |
---|
| 504 | |
---|
| 505 | sum_l = sum_l + TB(src_c, src_p, min(l + 4, NL - 1)) |
---|
| 506 | + TB(src_c, src_p, min(l + 8, NL - 1)) |
---|
| 507 | + TB(src_c, src_p, min(l + 11, NL - 1)) |
---|
| 508 | + TB(src_c, src_p, min(l + 15, NL - 1)) |
---|
| 509 | + TB(src_c, src_p, min(l + 17, NL - 1)) |
---|
| 510 | - TB(src_c, src_p, l - 5) |
---|
| 511 | - TB(src_c, src_p, l - 9) |
---|
| 512 | - TB(src_c, src_p, l - 12) |
---|
| 513 | - TB(src_c, src_p, l - 16) |
---|
| 514 | - TB(src_c, src_p, l - 18); |
---|
| 515 | |
---|
| 516 | TC(dst_c, dst_l, p) = sum_l / vnorm; |
---|
| 517 | } |
---|
| 518 | |
---|
| 519 | #if SUPER_VERBOSE |
---|
| 520 | printf(" - column %d computed at cycle %d\n", p, giet_proctime()); |
---|
| 521 | #endif |
---|
| 522 | |
---|
| 523 | } |
---|
| 524 | |
---|
| 525 | date = giet_proctime(); |
---|
| 526 | V_END[cluster_id][lpid] = date; |
---|
| 527 | |
---|
| 528 | #if VERBOSE |
---|
| 529 | printf( "\n[CONVOL] thread[%d,%d,%d] completes vertical filter" |
---|
| 530 | " at cycle %d\n", |
---|
| 531 | x, y, lpid, date ); |
---|
| 532 | #else |
---|
| 533 | if ( (x==0) && (y==0) && (lpid==0) ) |
---|
| 534 | printf( "\n[CONVOL] thread[0,0,0] completes vertical filter" |
---|
| 535 | " at cycle %d\n", date ); |
---|
| 536 | #endif |
---|
| 537 | |
---|
| 538 | //////////////////////////// |
---|
| 539 | #if USE_SQT_BARRIER |
---|
| 540 | sqt_barrier_wait( &barrier ); |
---|
| 541 | #else |
---|
| 542 | barrier_wait( &barrier ); |
---|
| 543 | #endif |
---|
| 544 | |
---|
| 545 | //////////////////////////////////////////////////////////////////////// |
---|
| 546 | // Optional parallel display of the final image Z <= D + C |
---|
| 547 | // Eah thread[x,y,p] displays (NL/nthreads) lines. (one byte per pixel). |
---|
| 548 | //////////////////////////////////////////////////////////////////////// |
---|
| 549 | |
---|
| 550 | if ( FINAL_DISPLAY_ENABLE ) |
---|
| 551 | { |
---|
| 552 | date = giet_proctime(); |
---|
| 553 | D_BEG[cluster_id][lpid] = date; |
---|
| 554 | |
---|
| 555 | #if VERBOSE |
---|
| 556 | printf( "\n[CONVOL] thread[%d,%d,%d] starts final display" |
---|
| 557 | " at cycle %d\n", |
---|
| 558 | x, y, lpid, date); |
---|
| 559 | #else |
---|
| 560 | if ( (x==0) && (y==0) && (lpid==0) ) |
---|
| 561 | printf( "\n[CONVOL] thread[0,0,0] starts final display" |
---|
| 562 | " at cycle %d\n", date ); |
---|
| 563 | #endif |
---|
| 564 | |
---|
| 565 | unsigned int line; |
---|
| 566 | unsigned int offset = lines_per_thread * lpid; |
---|
| 567 | |
---|
| 568 | for ( l = 0 ; l < lines_per_thread ; l++ ) |
---|
| 569 | { |
---|
| 570 | line = offset + l; |
---|
| 571 | |
---|
| 572 | for ( p = 0 ; p < NP ; p++ ) |
---|
| 573 | { |
---|
| 574 | TZ(cluster_id, line, p) = |
---|
| 575 | (unsigned char)( (TD(cluster_id, line, p) + |
---|
| 576 | TC(cluster_id, line, p) ) >> 8 ); |
---|
| 577 | } |
---|
| 578 | |
---|
| 579 | giet_fbf_sync_write( NP*(l + (thread_id * lines_per_thread) ), |
---|
| 580 | &TZ(cluster_id, line, 0), |
---|
| 581 | NP); |
---|
| 582 | } |
---|
| 583 | |
---|
| 584 | date = giet_proctime(); |
---|
| 585 | D_END[cluster_id][lpid] = date; |
---|
| 586 | |
---|
| 587 | #if VERBOSE |
---|
| 588 | printf( "\n[CONVOL] thread[%d,%d,%d] completes final display" |
---|
| 589 | " at cycle %d\n", |
---|
| 590 | x, y, lpid, date); |
---|
| 591 | #else |
---|
| 592 | if ( (x==0) && (y==0) && (lpid==0) ) |
---|
| 593 | printf( "\n[CONVOL] thread[0,0,0] completes final display" |
---|
| 594 | " at cycle %d\n", date ); |
---|
| 595 | #endif |
---|
| 596 | |
---|
| 597 | ////////////////////////////// |
---|
| 598 | #if USE_SQT_BARRIER |
---|
| 599 | sqt_barrier_wait( &barrier ); |
---|
| 600 | #else |
---|
| 601 | barrier_wait( &barrier ); |
---|
| 602 | #endif |
---|
| 603 | |
---|
| 604 | } |
---|
| 605 | |
---|
| 606 | // all threads (but the one executing main) exit |
---|
| 607 | if ( (x!=0) || (y!=0) || (lpid!=0) ) |
---|
| 608 | { |
---|
| 609 | giet_pthread_exit( "completed"); |
---|
| 610 | } |
---|
| 611 | |
---|
| 612 | } // end execute() |
---|
| 613 | |
---|
| 614 | |
---|
| 615 | |
---|
| 616 | ///////////////////////////////////////// |
---|
| 617 | void instrument( unsigned int nclusters, |
---|
| 618 | unsigned int nprocs ) |
---|
| 619 | ///////////////////////////////////////// |
---|
| 620 | { |
---|
| 621 | int cc, pp; |
---|
| 622 | |
---|
| 623 | unsigned int min_start = 0xFFFFFFFF; |
---|
| 624 | unsigned int max_start = 0; |
---|
| 625 | |
---|
| 626 | unsigned int min_h_beg = 0xFFFFFFFF; |
---|
| 627 | unsigned int max_h_beg = 0; |
---|
| 628 | |
---|
| 629 | unsigned int min_h_end = 0xFFFFFFFF; |
---|
| 630 | unsigned int max_h_end = 0; |
---|
| 631 | |
---|
| 632 | unsigned int min_v_beg = 0xFFFFFFFF; |
---|
| 633 | unsigned int max_v_beg = 0; |
---|
| 634 | |
---|
| 635 | unsigned int min_v_end = 0xFFFFFFFF; |
---|
| 636 | unsigned int max_v_end = 0; |
---|
| 637 | |
---|
| 638 | unsigned int min_d_beg = 0xFFFFFFFF; |
---|
| 639 | unsigned int max_d_beg = 0; |
---|
| 640 | |
---|
| 641 | unsigned int min_d_end = 0xFFFFFFFF; |
---|
| 642 | unsigned int max_d_end = 0; |
---|
| 643 | |
---|
| 644 | for (cc = 0; cc < nclusters; cc++) |
---|
| 645 | { |
---|
| 646 | for (pp = 0; pp < nprocs; pp++ ) |
---|
| 647 | { |
---|
| 648 | if (START[cc][pp] < min_start) min_start = START[cc][pp]; |
---|
| 649 | if (START[cc][pp] > max_start) max_start = START[cc][pp]; |
---|
| 650 | |
---|
| 651 | if (H_BEG[cc][pp] < min_h_beg) min_h_beg = H_BEG[cc][pp]; |
---|
| 652 | if (H_BEG[cc][pp] > max_h_beg) max_h_beg = H_BEG[cc][pp]; |
---|
| 653 | |
---|
| 654 | if (H_END[cc][pp] < min_h_end) min_h_end = H_END[cc][pp]; |
---|
| 655 | if (H_END[cc][pp] > max_h_end) max_h_end = H_END[cc][pp]; |
---|
| 656 | |
---|
| 657 | if (V_BEG[cc][pp] < min_v_beg) min_v_beg = V_BEG[cc][pp]; |
---|
| 658 | if (V_BEG[cc][pp] > max_v_beg) max_v_beg = V_BEG[cc][pp]; |
---|
| 659 | |
---|
| 660 | if (V_END[cc][pp] < min_v_end) min_v_end = V_END[cc][pp]; |
---|
| 661 | if (V_END[cc][pp] > max_v_end) max_v_end = V_END[cc][pp]; |
---|
| 662 | |
---|
| 663 | if (D_BEG[cc][pp] < min_d_beg) min_d_beg = D_BEG[cc][pp]; |
---|
| 664 | if (D_BEG[cc][pp] > max_d_beg) max_d_beg = D_BEG[cc][pp]; |
---|
| 665 | |
---|
| 666 | if (D_END[cc][pp] < min_d_end) min_d_end = D_END[cc][pp]; |
---|
| 667 | if (D_END[cc][pp] > max_d_end) max_d_end = D_END[cc][pp]; |
---|
| 668 | } |
---|
| 669 | } |
---|
| 670 | |
---|
| 671 | printf(" - START : min = %d / max = %d / med = %d / delta = %d\n", |
---|
| 672 | min_start, max_start, (min_start+max_start)/2, max_start-min_start); |
---|
| 673 | |
---|
| 674 | printf(" - H_BEG : min = %d / max = %d / med = %d / delta = %d\n", |
---|
| 675 | min_h_beg, max_h_beg, (min_h_beg+max_h_beg)/2, max_h_beg-min_h_beg); |
---|
| 676 | |
---|
| 677 | printf(" - H_END : min = %d / max = %d / med = %d / delta = %d\n", |
---|
| 678 | min_h_end, max_h_end, (min_h_end+max_h_end)/2, max_h_end-min_h_end); |
---|
| 679 | |
---|
| 680 | printf(" - V_BEG : min = %d / max = %d / med = %d / delta = %d\n", |
---|
| 681 | min_v_beg, max_v_beg, (min_v_beg+max_v_beg)/2, max_v_beg-min_v_beg); |
---|
| 682 | |
---|
| 683 | printf(" - V_END : min = %d / max = %d / med = %d / delta = %d\n", |
---|
| 684 | min_v_end, max_v_end, (min_v_end+max_v_end)/2, max_v_end-min_v_end); |
---|
| 685 | |
---|
| 686 | printf(" - D_BEG : min = %d / max = %d / med = %d / delta = %d\n", |
---|
| 687 | min_d_beg, max_d_beg, (min_d_beg+max_d_beg)/2, max_d_beg-min_d_beg); |
---|
| 688 | |
---|
| 689 | printf(" - D_END : min = %d / max = %d / med = %d / delta = %d\n", |
---|
| 690 | min_d_end, max_d_end, (min_d_end+max_d_end)/2, max_d_end-min_d_end); |
---|
| 691 | |
---|
| 692 | printf( "\n General Scenario (Kcycles for each step)\n" ); |
---|
| 693 | printf( " - BOOT OS = %d\n", (min_start )/1000 ); |
---|
| 694 | printf( " - LOAD IMAGE = %d\n", (min_h_beg - min_start)/1000 ); |
---|
| 695 | printf( " - H_FILTER = %d\n", (max_h_end - min_h_beg)/1000 ); |
---|
| 696 | printf( " - BARRIER HORI/VERT = %d\n", (min_v_beg - max_h_end)/1000 ); |
---|
| 697 | printf( " - V_FILTER = %d\n", (max_v_end - min_v_beg)/1000 ); |
---|
| 698 | printf( " - BARRIER VERT/DISP = %d\n", (min_d_beg - max_v_end)/1000 ); |
---|
| 699 | printf( " - DISPLAY = %d\n", (max_d_end - min_d_beg)/1000 ); |
---|
| 700 | |
---|
| 701 | } // end instrument() |
---|
| 702 | |
---|
| 703 | |
---|
| 704 | |
---|
| 705 | /////////////////////////////////////////// |
---|
| 706 | __attribute__ ((constructor)) void main() |
---|
| 707 | /////////////////////////////////////////// |
---|
| 708 | { |
---|
| 709 | // get plat-form parameters |
---|
| 710 | unsigned int x_size; // number of clusters in a row |
---|
| 711 | unsigned int y_size; // number of clusters in a column |
---|
| 712 | unsigned int nprocs; // number of processors per cluster |
---|
| 713 | giet_procs_number( &x_size , &y_size , &nprocs ); |
---|
| 714 | |
---|
| 715 | // processor identifiers |
---|
| 716 | unsigned int x; // x coordinate |
---|
| 717 | unsigned int y; // y coordinate |
---|
| 718 | unsigned int lpid; // local proc index |
---|
| 719 | giet_proc_xyp( &x, &y, &lpid ); |
---|
| 720 | |
---|
| 721 | // indexes for loops |
---|
| 722 | unsigned int cx; |
---|
| 723 | unsigned int cy; |
---|
| 724 | unsigned int n; |
---|
| 725 | |
---|
| 726 | unsigned int nclusters = x_size * y_size; |
---|
| 727 | unsigned int nthreads = nclusters * nprocs; |
---|
| 728 | |
---|
| 729 | // parameters checking |
---|
| 730 | if ((nprocs != 1) && (nprocs != 2) && (nprocs != 4) && (nprocs != 8)) |
---|
| 731 | giet_pthread_exit( "[CONVOL ERROR] NB_PROCS_MAX must be 1, 2, 4 or 8\n"); |
---|
| 732 | |
---|
| 733 | if ((x_size!=1) && (x_size!=2) && (x_size!=4) && (x_size!=8) && (x_size!=16)) |
---|
| 734 | giet_pthread_exit( "[CONVOL ERROR] X_SIZE must be 1, 2, 4, 8, 16\n"); |
---|
| 735 | |
---|
| 736 | if ((y_size!=1) && (y_size!=2) && (y_size!=4) && (y_size!=8) && (y_size!=16)) |
---|
| 737 | giet_pthread_exit( "[CONVOL ERROR] Y_SIZE must be 1, 2, 4, 8, 16\n"); |
---|
| 738 | |
---|
| 739 | if ( NL % nclusters != 0 ) |
---|
| 740 | giet_pthread_exit( "[CONVOL ERROR] X_SIZE*Y_SIZE must be a divider of NL"); |
---|
| 741 | |
---|
| 742 | if ( NP % nclusters != 0 ) |
---|
| 743 | giet_pthread_exit( "[CONVOL ERROR] X_SIZE*Y_SIZE must be a divider of NP"); |
---|
| 744 | |
---|
| 745 | // get a shared TTY |
---|
| 746 | giet_tty_alloc( 1 ); |
---|
| 747 | lock_init( &tty_lock ); |
---|
| 748 | |
---|
| 749 | // initializes the distributed heap[x,y] |
---|
| 750 | for ( cx = 0 ; cx < x_size ; cx++ ) |
---|
| 751 | { |
---|
| 752 | for ( cy = 0 ; cy < y_size ; cy++ ) |
---|
| 753 | { |
---|
| 754 | heap_init( cx , cy ); |
---|
| 755 | } |
---|
| 756 | } |
---|
| 757 | |
---|
| 758 | // allocate trdid[] array |
---|
| 759 | pthread_t* trdid = malloc( nthreads * sizeof(pthread_t) ); |
---|
| 760 | |
---|
| 761 | // barrier initialisation |
---|
| 762 | #if USE_SQT_BARRIER |
---|
| 763 | sqt_barrier_init( &barrier, x_size , y_size , nprocs ); |
---|
| 764 | #else |
---|
| 765 | barrier_init( &barrier, nthreads ); |
---|
| 766 | #endif |
---|
| 767 | |
---|
| 768 | printf("\n[CONVOL] thread[0,0,0] completes initialisation at cycle %d\n" |
---|
| 769 | "- CLUSTERS = %d\n" |
---|
| 770 | "- PROCS = %d\n" |
---|
| 771 | "- THREADS = %d\n", |
---|
| 772 | giet_proctime(), nclusters, nprocs, nthreads ); |
---|
| 773 | |
---|
| 774 | // launch other threads to run execute() function |
---|
| 775 | for ( n = 1 ; n < nthreads ; n++ ) |
---|
| 776 | { |
---|
| 777 | if ( giet_pthread_create( &trdid[n], |
---|
| 778 | NULL, // no attribute |
---|
| 779 | &execute, |
---|
| 780 | NULL ) ) // no argument |
---|
| 781 | { |
---|
| 782 | printf("\n[TRANSPOSE ERROR] creating thread %x\n", trdid[n] ); |
---|
| 783 | giet_pthread_exit( NULL ); |
---|
| 784 | } |
---|
| 785 | } |
---|
| 786 | |
---|
| 787 | // run the execute() function |
---|
| 788 | execute(); |
---|
| 789 | |
---|
| 790 | // wait other threads completion |
---|
| 791 | for ( n = 1 ; n < nthreads ; n++ ) |
---|
| 792 | { |
---|
| 793 | if ( giet_pthread_join( trdid[n], NULL ) ) |
---|
| 794 | { |
---|
| 795 | printf("\n[TRANSPOSE ERROR] joining thread %x\n", trdid[n] ); |
---|
| 796 | giet_pthread_exit( NULL ); |
---|
| 797 | } |
---|
| 798 | else |
---|
| 799 | { |
---|
| 800 | printf("\n[TRANSPOSE] thread %x joined at cycle %d\n", |
---|
| 801 | trdid[n] , giet_proctime() ); |
---|
| 802 | } |
---|
| 803 | } |
---|
| 804 | |
---|
| 805 | // call the instrument() function |
---|
| 806 | instrument( nclusters , nprocs ); |
---|
| 807 | |
---|
| 808 | giet_pthread_exit( "completed" ); |
---|
| 809 | |
---|
| 810 | } // end main() |
---|
| 811 | |
---|
| 812 | |
---|
| 813 | |
---|
| 814 | // Local Variables: |
---|
| 815 | // tab-width: 3 |
---|
| 816 | // c-basic-offset: 3 |
---|
| 817 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
---|
| 818 | // indent-tabs-mode: nil |
---|
| 819 | // End: |
---|
| 820 | |
---|
| 821 | // vim: filetype=cpp:expandtab:shiftwidth=3:tabstop=3:softtabstop=3 |
---|
| 822 | |
---|
| 823 | |
---|