int main(int argc, char** argv)
{
int step,burst;
int nparticle = 8192; /* MUST be a nice power of two for simplicity */
int nstep = 500;
int nburst = 20; /* MUST divide the value of nstep without remainder */
int nthread = 64; /* chosen for ATI Radeon HD 5870 */
float dt = 0.0001;
float eps = 0.0001;
cl_float4* pos1 = (cl_float4*)clmalloc(stdgpu,nparticle*sizeof(cl_float4),0);
cl_float4* pos2 = (cl_float4*)clmalloc(stdgpu,nparticle*sizeof(cl_float4),0);
cl_float4* vel = (cl_float4*)clmalloc(stdgpu,nparticle*sizeof(cl_float4),0);
nbody_init(nparticle,pos1,vel);
void* h = clopen(stdgpu,"nbody_kern.cl",CLLD_NOW);
cl_kernel krn = clsym(stdgpu,h,"nbody_kern",CLLD_NOW);
clndrange_t ndr = clndrange_init1d(0,nparticle,nthread);
clarg_set(stdgpu,krn,0,dt);
clarg_set(stdgpu,krn,1,eps);
clarg_set_global(stdgpu,krn,4,vel);
clarg_set_local(stdgpu,krn,5,nthread*sizeof(cl_float4));
clmsync(stdgpu,0,pos1,CL_MEM_DEVICE|CL_EVENT_NOWAIT);
clmsync(stdgpu,0,vel,CL_MEM_DEVICE|CL_EVENT_NOWAIT);
for(step=0; step<nstep; step+=nburst) {
for(burst=0; burst<nburst; burst+=2) {
clarg_set_global(stdgpu,krn,2,pos1);
clarg_set_global(stdgpu,krn,3,pos2);
clfork(stdgpu,0,krn,&ndr,CL_EVENT_NOWAIT);
clarg_set_global(stdgpu,krn,2,pos2);
clarg_set_global(stdgpu,krn,3,pos1);
clfork(stdgpu,0,krn,&ndr,CL_EVENT_NOWAIT);
}
clmsync(stdgpu,0,pos1,CL_MEM_HOST|CL_EVENT_NOWAIT);
clwait(stdgpu,0,CL_KERNEL_EVENT|CL_MEM_EVENT);
}
nbody_output(nparticle,pos1,vel);
clclose(stdgpu,h);
clfree(pos1);
clfree(pos2);
clfree(vel);
}
/*
* Calculates the path loss matrix for many transmitters and saves the
* output to one common raster map.
*
* int nrows .............. the number of rows in the DEM.
* int ncols .............. the number of columns in the DEM.
* int tx_coord_col ....... transmitter column coordinate (in raster cells).
* int tx_coord_row ....... transmitter row coordinate (in raster cells).
* int tx_elevation ....... transmitter height above sea level.
* int anthena_height ..... height of transmitter anthena above ground.
* float rx_height ........ receiver height above ground.
* float frequency ........ transmitter frequency in Mhz.
* int radius ............. calculation radius around to the transmitter
* (in raster cells).
* int infd ............... file descriptor to read from the DEM.
* int outfd .............. file descriptor to write resulting raster.
* RASTER_MAP_TYPE rtype .. DEM element data type.
*
*/
void hata_cl (const int nrows, const int ncols,
const int tx_coord_col, const int tx_coord_row,
const int tx_elevation, const int tx_anthena_height,
const float rx_height, const float frequency,
const int radius,
const int infd, const int outfd,
RASTER_MAP_TYPE rtype)
{
int i;
/* number of processing tiles needed around each transmitter */
int ntile = (radius*2) / _HATA_WITEM_PER_DIM_ + 1;
G_message ("Receiver height above ground is %5.2f mts", rx_height);
G_message ("Transmitter frequency is %7.2f Mhz", frequency);
G_message ("Calculation radius is %d raster cells", radius);
CONTEXT * ctx = init_context ( );
/* initialize raster data */
void *dem_in = load_raster (ctx, nrows, ncols, infd, rtype);
void *dem_out = null_raster (ctx, nrows, ncols, rtype, NULL);
/* load, compile and link the OpenCL kernel file */
void* h = clopen (ctx, NULL, CLLD_NOW);
/* select a kernel function from the loaded file */
cl_kernel krn = clsym (ctx, h, "hata_urban_kern", CLLD_NOW);
/* defines a 2D matrix of work groups & work items */
size_t global_wsize = ntile * _HATA_WITEM_PER_DIM_;
size_t local_wsize = _HATA_WITEM_PER_DIM_;
if ((global_wsize % local_wsize) != 0)
G_fatal_error ("Work group dimensions are incorrect.");
else
G_message ("Creating %d work-group(s) of [%d x %d] threads each",
global_wsize/local_wsize,
local_wsize, local_wsize);
clndrange_t ndr = clndrange_init2d (0,global_wsize,local_wsize,
0,global_wsize,local_wsize);
// correction factor ahr
float ahr = (1.1f*log10(frequency) - 0.7f)*rx_height -
(1.56f*log10(frequency) - 0.8f);
/* set kernel parameters and local memory size */
clarg_set (ctx, krn, 0, ncols);
clarg_set (ctx, krn, 3, rx_height);
clarg_set (ctx, krn, 4, frequency);
clarg_set (ctx, krn, 5, ahr);
size_t lmem_size = _HATA_WITEM_PER_DIM_*_HATA_WITEM_PER_DIM_*
sizeof(cl_float2);
if (lmem_size > _HATA_MAX_LOCAL_MEM_)
G_fatal_error ("Allocated local memory (%d) exceeds %d bytes.", lmem_size,
_HATA_MAX_LOCAL_MEM_);
clarg_set_local (ctx, krn, 8, lmem_size);
/* transfer data to the device */
clmsync (ctx, 0, dem_in, CL_MEM_DEVICE|CL_EVENT_NOWAIT);
clmsync (ctx, 0, dem_out, CL_MEM_DEVICE|CL_EVENT_NOWAIT);
/* set remaining kernel parameters */
clarg_set_global (ctx, krn, 6, dem_in);
clarg_set_global (ctx, krn, 7, dem_out);
G_message ("Simulating ...");
/* test transmitters
ASNEBE | 1468 | 1200
ASKZK | 1395 | 1180
ASPAR | 1400 | 1245
ASMARG | 1460 | 1203
ASTARA | 1422 | 1235
ASKZ | 1396 | 1181
ASENTP | 1387 | 1185
ASISKP | 1399 | 1189
ASEME | 1448 | 1262
ASOSTR | 1498 | 1253
ASMELT | 1429 | 1196
ASMART | 1446 | 1213
ASLOM | 1425 | 1226
ASAZU | 1421 | 1235
ASONCE | 1433 | 1208
ASMAR | 1404 | 1150
ASTEP | 1450 | 1235
ASAVLJ | 1417 | 1182
ASTOZI | 1436 | 1198
ASTRAL | 1422 | 1227
ASTEG | 1404 | 1193
*/
const int ntest_tx = 21;
cl_int2 *test_tx = malloc (ntest_tx * sizeof(cl_int2));
test_tx[0] = (cl_int2) {1468,1200};
test_tx[1] = (cl_int2) {1395,1180};
test_tx[2] = (cl_int2) {1400,1245};
test_tx[3] = (cl_int2) {1460,1203};
test_tx[4] = (cl_int2) {1422,1235};
test_tx[5] = (cl_int2) {1396,1181};
test_tx[6] = (cl_int2) {1387,1185};
test_tx[7] = (cl_int2) {1399,1189};
test_tx[8] = (cl_int2) {1448,1262};
test_tx[9] = (cl_int2) {1498,1253};
test_tx[10] = (cl_int2) {1429,1196};
test_tx[11] = (cl_int2) {1446,1213};
test_tx[12] = (cl_int2) {1425,1226};
test_tx[13] = (cl_int2) {1421,1235};
test_tx[14] = (cl_int2) {1433,1208};
test_tx[15] = (cl_int2) {1404,1150};
test_tx[16] = (cl_int2) {1450,1235};
test_tx[17] = (cl_int2) {1417,1182};
test_tx[18] = (cl_int2) {1436,1198};
test_tx[19] = (cl_int2) {1422,1227};
test_tx[20] = (cl_int2) {1404,1193};
/* for each transmitter */
for (i = 0; i < ntest_tx; i++)
{
/* display completion percentage */
G_percent (i, ntest_tx, 1);
/* Transmitter coordinates */
cl_int2 tx_coord = test_tx[i];
//G_message ("The transmitter is located at %d, %d", tx_coord.x,
// tx_coord.y);
/* Transmitter heights */
//G_message ("Transmitter height above sea level is %d mts", tx_elevation);
//G_message ("Transmitter anthena height above ground is %d mts", tx_anthena_height);
/* transmitter data */
cl_int4 tx_data = (cl_int4) {tx_coord.x, tx_coord.y,
tx_elevation, tx_anthena_height};
/* tile offset within the raster */
cl_int2 tx_offset = (cl_int2) {tx_coord.x - radius,
tx_coord.y - radius};
/* set (more) remaining kernel parameters */
clarg_set (ctx, krn, 1, tx_data);
clarg_set (ctx, krn, 2, tx_offset);
/* start kernel execution */
clfork (ctx, 0, krn, &ndr, CL_EVENT_NOWAIT);
clwait (ctx, 0, CL_KERNEL_EVENT|CL_MEM_EVENT|CL_EVENT_RELEASE);
}
/* sync memory */
clmsync (ctx, 0, dem_out, CL_MEM_HOST|CL_EVENT_WAIT);
/* write the calculation output */
save_raster (dem_out, nrows, ncols, outfd);
/* free allocated resources */
free (test_tx);
clclose (ctx, h);
clfree (dem_out);
clfree (dem_in);
}
/*
* Calculates an interference matrix resulting from the tx power of all
* transmitters combined with their respective path losses and the thermal
* noise. The output is saved in one raster map.
*
* int nrows .............. the number of rows in the DEM.
* int ncols .............. the number of columns in the DEM.
* int tx_coord_col ....... transmitter column coordinate (in raster cells).
* int tx_coord_row ....... transmitter row coordinate (in raster cells).
* int tx_elevation ....... transmitter height above sea level.
* int anthena_height ..... height of transmitter anthena above ground.
* float rx_height ........ receiver height above ground.
* float frequency ........ transmitter frequency in Mhz.
* int radius ............. calculation radius around to the transmitter
* (in raster cells).
* int infd ............... file descriptor to read from the DEM.
* int outfd .............. file descriptor to write the interference
* data to.
* RASTER_MAP_TYPE rtype .. DEM element data type.
*
*/
void hata_interference_cl (const int nrows, const int ncols,
const int tx_coord_col, const int tx_coord_row,
const int tx_elevation, const int tx_anthena_height,
const float rx_height, const float frequency,
const int radius,
const int infd, const int outfd,
RASTER_MAP_TYPE rtype)
{
int i;
/* number of processing tiles needed around each transmitter */
int ntile = (radius*2) / _HATA_WITEM_PER_DIM_ + 1;
G_message ("Receiver height above ground is %5.2f mts", rx_height);
G_message ("Transmitter frequency is %7.2f Mhz", frequency);
G_message ("Calculation radius is %d raster cells", radius);
CONTEXT * ctx = init_context ( );
/* initialize raster data */
void *dem_in = load_raster (ctx, nrows, ncols, infd, rtype);
/* interference matrix */
void *qrm_out = alloc_raster (ctx, nrows, ncols, rtype,
(FCELL)_HATA_THERMAL_NOISE_, NULL);
/* load, compile and link the OpenCL kernel file */
void* h = clopen (ctx, NULL, CLLD_NOW);
/* select a kernel function from the loaded file */
cl_kernel krn = clsym (ctx, h, "hata_urban_interference", CLLD_NOW);
/* defines a 2D matrix of work groups & work items */
size_t global_wsize = ntile * _HATA_WITEM_PER_DIM_;
size_t local_wsize = _HATA_WITEM_PER_DIM_;
if ((global_wsize % local_wsize) != 0)
G_fatal_error ("Work group dimensions are incorrect.");
else
G_message ("Creating %d work-group(s) of [%d x %d] threads each",
global_wsize/local_wsize,
local_wsize, local_wsize);
clndrange_t ndr = clndrange_init2d (0,global_wsize,local_wsize,
0,global_wsize,local_wsize);
// correction factor ahr
float ahr = (1.1f*log10(frequency) - 0.7f)*rx_height -
(1.56f*log10(frequency) - 0.8f);
/* set kernel parameters and local memory size */
clarg_set (ctx, krn, 0, ncols);
clarg_set (ctx, krn, 3, rx_height);
clarg_set (ctx, krn, 4, frequency);
clarg_set (ctx, krn, 5, ahr);
size_t lmem_size = _HATA_WITEM_PER_DIM_*_HATA_WITEM_PER_DIM_*
sizeof(cl_float2);
if (lmem_size > _HATA_MAX_LOCAL_MEM_)
G_fatal_error ("Allocated local memory (%d) exceeds %d bytes.", lmem_size,
_HATA_MAX_LOCAL_MEM_);
clarg_set_local (ctx, krn, 8, lmem_size);
/* transfer data to the device */
clmsync (ctx, 0, dem_in, CL_MEM_DEVICE|CL_EVENT_NOWAIT);
clmsync (ctx, 0, qrm_out, CL_MEM_DEVICE|CL_EVENT_WAIT);
/* set remaining kernel parameters */
clarg_set_global (ctx, krn, 6, dem_in);
clarg_set_global (ctx, krn, 7, qrm_out);
G_message ("Simulating ...");
/**
* Test transmitters
*
* ASNEBE | 1468 | 1200
* ASKZK | 1395 | 1180
* ALEK | 1408 | 1211
* ANDREJ | 1431 | 1212
* AMALENA | 1462 | 1272
* APOLJE | 1483 | 1227
* AMONS | 1381 | 1230
* ANTENA | 1397 | 1238
* ATOMAC | 1443 | 1194
* ATUNEL | 1424 | 1239
* AKOSET | 1398 | 1206
* ASPAR | 1400 | 1245
* ACHEMO | 1431 | 1226
* ALIVAD | 1423 | 1248
* ASMARG | 1460 | 1203
* ABTC | 1451 | 1215
* AZIMA | 1471 | 1236
* ASTARA | 1422 | 1235
* AVEGAS | 1434 | 1257
* APOVSE | 1436 | 1232
* ABTCST | 1449 | 1213
* AMOBI | 1429 | 1222
* APODUT | 1378 | 1202
* AOBZEL | 1444 | 1222
* AGRIC | 1385 | 1207
* ADELO | 1421 | 1222
* AJEZA | 1459 | 1182
* ASKZ | 1396 | 1181
* ATLK | 1422 | 1225
* AGR | 1424 | 1220
* ADNEVN | 1426 | 1232
* AMHOTE | 1409 | 1212
* AVIC | 1414 | 1236
* AJOZEF | 1429 | 1234
* ATVSLO | 1425 | 1228
* ACRNUC | 1445 | 1172
* ANGEL | 1508 | 1219
* AKOSEG | 1401 | 1210
* AMSC | 1429 | 1222
* AGRAM | 1421 | 1195
* ARAKTK | 1436 | 1249
* AIMKO | 1445 | 1179
* AKOVIN | 1412 | 1214
* ADOLGI | 1388 | 1250
* APETER | 1431 | 1231
* ASENTP | 1387 | 1185
* AOBI | 1443 | 1268
* AMZS | 1427 | 1203
* AVICTK | 1403 | 1240
* AZUR | 1397 | 1238
* AKAMNA | 1388 | 1200
* APOLCE | 1482 | 1228
* AKASEL | 1497 | 1232
* ASISKP | 1399 | 1189
* AKOZAR | 1373 | 1247
* ASEME | 1448 | 1262
* AURSKA | 1424 | 1220
* ABEZIT | 1427 | 1199
* AVEROV | 1416 | 1201
* ATEGR | 1419 | 1209
* ATRUB | 1423 | 1231
* AKOLIN | 1436 | 1221
* AVELAN | 1439 | 1218
* ABEZI | 1431 | 1216
* AGAMGD | 1418 | 1148
* AGURS | 1431 | 1237
* AGPG | 1419 | 1237
* AKOSME | 1397 | 1210
* AZALOG | 1500 | 1225
* ASOSTR | 1498 | 1253
* AROZNA | 1404 | 1235
* AVRHO | 1380 | 1242
* ARAK | 1430 | 1244
* AVILA | 1404 | 1230
* AKOLEZ | 1413 | 1241
* AJEZKZ | 1427 | 1185
* AVIZMA | 1386 | 1173
* AKOTNI | 1429 | 1226
* AMOSTE | 1443 | 1227
* ATOPNI | 1425 | 1212
* AGZ | 1429 | 1209
* APRZAC | 1386 | 1192
* ALITIJ | 1455 | 1235
* ATEHNO | 1387 | 1233
* ASMELT | 1429 | 1196
* ACRGMA | 1439 | 1166
* AFORD | 1439 | 1215
* ADRAVC | 1396 | 1197
* ABROD | 1388 | 1168
* ATABOR | 1429 | 1228
* ATRNOV | 1421 | 1242
* AGOLOV | 1467 | 1263
* ARESEV | 1438 | 1228
* ABTCMI | 1450 | 1216
* ASMART | 1446 | 1213
* APROGA | 1382 | 1251
* ABRDO | 1382 | 1235
* AKONEX | 1387 | 1237
* AZITO | 1456 | 1213
* ASLOM | 1425 | 1226
* APLAMA | 1448 | 1202
* AGRAD | 1470 | 1218
* AFUZIN | 1463 | 1228
* ASAZU | 1421 | 1235
* ATOTRA | 1463 | 1233
* AHALA | 1414 | 1221
* ASONCE | 1433 | 1208
* ALMLEK | 1422 | 1202
* ACERNE | 1415 | 1212
* ADRAV | 1396 | 1201
* ALGRAD | 1424 | 1234
* ALPP | 1406 | 1205
* ANAMA | 1420 | 1231
* ATIVO | 1418 | 1226
* AZAPUZ | 1392 | 1196
* ASMAR | 1404 | 1150
* ACANK | 1416 | 1233
* ATACGD | 1390 | 1156
* APOPTV | 1435 | 1211
* AFRANK | 1417 | 1220
* ASTEP | 1450 | 1235
* AEJATA | 1445 | 1218
* AZADOB | 1482 | 1206
* AELNA | 1436 | 1177
* AZELEZ | 1428 | 1218
* AMURGL | 1415 | 1246
* ACIGO | 1423 | 1225
* AIJS | 1407 | 1241
* AELOK | 1459 | 1225
* ATACBR | 1385 | 1160
* AJELSA | 1416 | 1259
* AVRHOV | 1394 | 1242
* ABIZOV | 1472 | 1247
* ACITYP | 1454 | 1214
* ASAVLJ | 1417 | 1182
* AKLINI | 1434 | 1228
* AKODEL | 1439 | 1236
* ASTOZI | 1436 | 1198
* AKORA | 1422 | 1226
* AHLEV | 1388 | 1163
* ATOPLA | 1451 | 1224
* AMALEN | 1461 | 1273
* AVECNA | 1391 | 1222
* ANADGO | 1462 | 1178
* ABOKAL | 1379 | 1231
* AVARNO | 1404 | 1250
* ASTRAL | 1422 | 1227
* AVEVCE | 1488 | 1234
* ARNC | 1423 | 1225
* AGEOPL | 1406 | 1198
* AMOBLI | 1415 | 1200
* AVLADA | 1415 | 1234
* ASTEG | 1404 | 1193
* AKOSEZ | 1392 | 1207
*/
const int ntest_tx = 154;
cl_int2 *test_tx = malloc (ntest_tx * sizeof(cl_int2));
test_tx[0] = (cl_int2) {1468,1200};
test_tx[1] = (cl_int2) {1395,1180};
test_tx[2] = (cl_int2) {1408,1211};
test_tx[3] = (cl_int2) {1431,1212};
test_tx[4] = (cl_int2) {1462,1272};
test_tx[5] = (cl_int2) {1483,1227};
test_tx[6] = (cl_int2) {1381,1230};
test_tx[7] = (cl_int2) {1397,1238};
test_tx[8] = (cl_int2) {1443,1194};
test_tx[9] = (cl_int2) {1424,1239};
test_tx[10] = (cl_int2) {1398,1206};
test_tx[11] = (cl_int2) {1400,1245};
test_tx[12] = (cl_int2) {1431,1226};
test_tx[13] = (cl_int2) {1423,1248};
test_tx[14] = (cl_int2) {1460,1203};
test_tx[15] = (cl_int2) {1451,1215};
test_tx[16] = (cl_int2) {1471,1236};
test_tx[17] = (cl_int2) {1422,1235};
test_tx[18] = (cl_int2) {1434,1257};
test_tx[19] = (cl_int2) {1436,1232};
test_tx[20] = (cl_int2) {1449,1213};
test_tx[21] = (cl_int2) {1429,1222};
test_tx[22] = (cl_int2) {1378,1202};
test_tx[23] = (cl_int2) {1444,1222};
test_tx[24] = (cl_int2) {1385,1207};
test_tx[25] = (cl_int2) {1421,1222};
test_tx[26] = (cl_int2) {1459,1182};
test_tx[27] = (cl_int2) {1396,1181};
test_tx[28] = (cl_int2) {1422,1225};
test_tx[29] = (cl_int2) {1424,1220};
test_tx[30] = (cl_int2) {1426,1232};
test_tx[31] = (cl_int2) {1409,1212};
test_tx[32] = (cl_int2) {1414,1236};
test_tx[33] = (cl_int2) {1429,1234};
test_tx[34] = (cl_int2) {1425,1228};
test_tx[35] = (cl_int2) {1445,1172};
test_tx[36] = (cl_int2) {1508,1219};
test_tx[37] = (cl_int2) {1401,1210};
test_tx[38] = (cl_int2) {1429,1222};
test_tx[39] = (cl_int2) {1421,1195};
test_tx[40] = (cl_int2) {1436,1249};
test_tx[41] = (cl_int2) {1445,1179};
test_tx[42] = (cl_int2) {1412,1214};
test_tx[43] = (cl_int2) {1388,1250};
test_tx[44] = (cl_int2) {1431,1231};
test_tx[45] = (cl_int2) {1387,1185};
test_tx[46] = (cl_int2) {1443,1268};
test_tx[47] = (cl_int2) {1427,1203};
test_tx[48] = (cl_int2) {1403,1240};
test_tx[49] = (cl_int2) {1397,1238};
test_tx[50] = (cl_int2) {1388,1200};
test_tx[51] = (cl_int2) {1482,1228};
test_tx[52] = (cl_int2) {1497,1232};
test_tx[53] = (cl_int2) {1399,1189};
test_tx[54] = (cl_int2) {1373,1247};
test_tx[55] = (cl_int2) {1448,1262};
test_tx[56] = (cl_int2) {1424,1220};
test_tx[57] = (cl_int2) {1427,1199};
test_tx[58] = (cl_int2) {1416,1201};
test_tx[59] = (cl_int2) {1419,1209};
test_tx[60] = (cl_int2) {1423,1231};
test_tx[61] = (cl_int2) {1436,1221};
test_tx[62] = (cl_int2) {1439,1218};
test_tx[63] = (cl_int2) {1431,1216};
test_tx[64] = (cl_int2) {1418,1148};
test_tx[65] = (cl_int2) {1431,1237};
test_tx[66] = (cl_int2) {1419,1237};
test_tx[67] = (cl_int2) {1397,1210};
test_tx[68] = (cl_int2) {1500,1225};
test_tx[69] = (cl_int2) {1498,1253};
test_tx[70] = (cl_int2) {1404,1235};
test_tx[71] = (cl_int2) {1380,1242};
test_tx[72] = (cl_int2) {1430,1244};
test_tx[73] = (cl_int2) {1404,1230};
test_tx[74] = (cl_int2) {1413,1241};
test_tx[75] = (cl_int2) {1427,1185};
test_tx[76] = (cl_int2) {1386,1173};
test_tx[77] = (cl_int2) {1429,1226};
test_tx[78] = (cl_int2) {1443,1227};
test_tx[79] = (cl_int2) {1425,1212};
test_tx[80] = (cl_int2) {1429,1209};
test_tx[81] = (cl_int2) {1386,1192};
test_tx[82] = (cl_int2) {1455,1235};
test_tx[83] = (cl_int2) {1387,1233};
test_tx[84] = (cl_int2) {1429,1196};
test_tx[85] = (cl_int2) {1439,1166};
test_tx[86] = (cl_int2) {1439,1215};
test_tx[87] = (cl_int2) {1396,1197};
test_tx[88] = (cl_int2) {1388,1168};
test_tx[89] = (cl_int2) {1429,1228};
test_tx[90] = (cl_int2) {1421,1242};
test_tx[91] = (cl_int2) {1467,1263};
test_tx[92] = (cl_int2) {1438,1228};
test_tx[93] = (cl_int2) {1450,1216};
test_tx[94] = (cl_int2) {1446,1213};
test_tx[95] = (cl_int2) {1382,1251};
test_tx[96] = (cl_int2) {1382,1235};
test_tx[97] = (cl_int2) {1387,1237};
test_tx[98] = (cl_int2) {1456,1213};
test_tx[99] = (cl_int2) {1425,1226};
test_tx[100] = (cl_int2) {1448,1202};
test_tx[101] = (cl_int2) {1470,1218};
test_tx[102] = (cl_int2) {1463,1228};
test_tx[103] = (cl_int2) {1421,1235};
test_tx[104] = (cl_int2) {1463,1233};
test_tx[105] = (cl_int2) {1414,1221};
test_tx[106] = (cl_int2) {1433,1208};
test_tx[107] = (cl_int2) {1422,1202};
test_tx[108] = (cl_int2) {1415,1212};
test_tx[109] = (cl_int2) {1396,1201};
test_tx[110] = (cl_int2) {1424,1234};
test_tx[111] = (cl_int2) {1406,1205};
test_tx[112] = (cl_int2) {1420,1231};
test_tx[113] = (cl_int2) {1418,1226};
test_tx[114] = (cl_int2) {1392,1196};
test_tx[115] = (cl_int2) {1404,1150};
test_tx[116] = (cl_int2) {1416,1233};
test_tx[117] = (cl_int2) {1390,1156};
test_tx[118] = (cl_int2) {1435,1211};
test_tx[119] = (cl_int2) {1417,1220};
test_tx[120] = (cl_int2) {1450,1235};
test_tx[121] = (cl_int2) {1445,1218};
test_tx[122] = (cl_int2) {1482,1206};
test_tx[123] = (cl_int2) {1436,1177};
test_tx[124] = (cl_int2) {1428,1218};
test_tx[125] = (cl_int2) {1415,1246};
test_tx[126] = (cl_int2) {1423,1225};
test_tx[127] = (cl_int2) {1407,1241};
test_tx[128] = (cl_int2) {1459,1225};
test_tx[129] = (cl_int2) {1385,1160};
test_tx[130] = (cl_int2) {1416,1259};
test_tx[131] = (cl_int2) {1394,1242};
test_tx[132] = (cl_int2) {1472,1247};
test_tx[133] = (cl_int2) {1454,1214};
test_tx[134] = (cl_int2) {1417,1182};
test_tx[135] = (cl_int2) {1434,1228};
test_tx[136] = (cl_int2) {1439,1236};
test_tx[137] = (cl_int2) {1436,1198};
test_tx[138] = (cl_int2) {1422,1226};
test_tx[139] = (cl_int2) {1388,1163};
test_tx[140] = (cl_int2) {1451,1224};
test_tx[141] = (cl_int2) {1461,1273};
test_tx[142] = (cl_int2) {1391,1222};
test_tx[143] = (cl_int2) {1462,1178};
test_tx[144] = (cl_int2) {1379,1231};
test_tx[145] = (cl_int2) {1404,1250};
test_tx[146] = (cl_int2) {1422,1227};
test_tx[147] = (cl_int2) {1488,1234};
test_tx[148] = (cl_int2) {1423,1225};
test_tx[149] = (cl_int2) {1406,1198};
test_tx[150] = (cl_int2) {1415,1200};
test_tx[151] = (cl_int2) {1415,1234};
test_tx[152] = (cl_int2) {1404,1193};
test_tx[153] = (cl_int2) {1392,1207};
/* for each transmitter */
for (i = 0; i < ntest_tx; i++)
{
/* display completion percentage */
G_percent (i, ntest_tx, 1);
/* Transmitter coordinates */
cl_int2 tx_coord = test_tx[i];
G_message ("The transmitter is located at %d, %d", tx_coord.x,
tx_coord.y);
/* Transmitter heights */
//G_message ("Transmitter height above sea level is %d mts", tx_elevation);
//G_message ("Transmitter anthena height above ground is %d mts", tx_anthena_height);
/* transmitter data */
cl_int4 tx_data = (cl_int4) {tx_coord.x, tx_coord.y,
tx_elevation, tx_anthena_height};
/* tile offset within the raster */
cl_int2 tx_offset = (cl_int2) {tx_coord.x - radius,
tx_coord.y - radius};
/* set (more) remaining kernel parameters */
clarg_set (ctx, krn, 1, tx_data);
clarg_set (ctx, krn, 2, tx_offset);
/* start kernel execution */
clfork (ctx, 0, krn, &ndr, CL_EVENT_NOWAIT);
clwait (ctx, 0, CL_KERNEL_EVENT|CL_MEM_EVENT|CL_EVENT_RELEASE);
}
/* sync memory */
clmsync (ctx, 0, qrm_out, CL_MEM_HOST|CL_EVENT_WAIT);
/* write the calculation output */
save_raster (qrm_out, nrows, ncols, outfd);
/* free allocated resources */
free (test_tx);
clclose (ctx, h);
clfree (qrm_out);
clfree (dem_in);
}