static int
unitarize_link_test()
{
QudaGaugeParam qudaGaugeParam = newQudaGaugeParam();
initQuda(0);
cpu_prec = prec;
gSize = cpu_prec;
qudaGaugeParam.anisotropy = 1.0;
qudaGaugeParam.X[0] = xdim;
qudaGaugeParam.X[1] = ydim;
qudaGaugeParam.X[2] = zdim;
qudaGaugeParam.X[3] = tdim;
setDims(qudaGaugeParam.X);
QudaPrecision link_prec = QUDA_SINGLE_PRECISION;
QudaReconstructType link_recon = QUDA_RECONSTRUCT_NO;
qudaGaugeParam.cpu_prec = link_prec;
qudaGaugeParam.cuda_prec = link_prec;
qudaGaugeParam.reconstruct = link_recon;
qudaGaugeParam.type = QUDA_WILSON_LINKS;
hisq::fermion_force::hisqForceInitCuda(&qudaGaugeParam);
qudaGaugeParam.t_boundary = QUDA_PERIODIC_T;
qudaGaugeParam.anisotropy = 1.0;
qudaGaugeParam.cuda_prec_sloppy = prec;
qudaGaugeParam.reconstruct_sloppy = QUDA_RECONSTRUCT_NO;
qudaGaugeParam.gauge_fix = QUDA_GAUGE_FIXED_NO;
qudaGaugeParam.ga_pad = 0;
qudaGaugeParam.packed_size = 0;
qudaGaugeParam.gaugeGiB = 0;
qudaGaugeParam.flag = false;
qudaGaugeParam.cpu_prec = cpu_prec;
qudaGaugeParam.cuda_prec = prec;
qudaGaugeParam.gauge_order = gauge_order;
qudaGaugeParam.type=QUDA_WILSON_LINKS;
qudaGaugeParam.reconstruct = link_recon;
qudaGaugeParam.flag = QUDA_FAT_PRESERVE_CPU_GAUGE
| QUDA_FAT_PRESERVE_GPU_GAUGE
| QUDA_FAT_PRESERVE_COMM_MEM;
setFatLinkPadding(QUDA_COMPUTE_FAT_STANDARD, &qudaGaugeParam);
GaugeFieldParam gParam(0, qudaGaugeParam);
gParam.pad = 0;
gParam.create = QUDA_REFERENCE_FIELD_CREATE;
gParam.link_type = QUDA_WILSON_LINKS;
gParam.order = QUDA_MILC_GAUGE_ORDER;
cpuGaugeField *cpuOutLink = new cpuGaugeField(gParam);
gParam.pad = 0;
gParam.create = QUDA_NULL_FIELD_CREATE;
gParam.link_type = QUDA_WILSON_LINKS;
gParam.order = QUDA_QDP_GAUGE_ORDER;
gParam.reconstruct = QUDA_RECONSTRUCT_NO;
cudaGaugeField *cudaFatLink = new cudaGaugeField(gParam);
cudaGaugeField *cudaULink = new cudaGaugeField(gParam);
initCommonConstants(*cudaFatLink);
void* fatlink = (void*)malloc(4*V*gaugeSiteSize*gSize);
if(fatlink == NULL){
errorQuda("ERROR: allocating fatlink failed\n");
}
void* sitelink[4];
for(int i=0;i < 4;i++){
cudaMallocHost((void**)&sitelink[i], V*gaugeSiteSize*gSize);
if(sitelink[i] == NULL){
errorQuda("ERROR; allocate sitelink[%d] failed\n", i);
}
}
createSiteLinkCPU(sitelink, qudaGaugeParam.cpu_prec, 1);
double act_path_coeff[6];
act_path_coeff[0] = 0.625000;
act_path_coeff[1] = -0.058479;
act_path_coeff[2] = -0.087719;
act_path_coeff[3] = 0.030778;
act_path_coeff[4] = -0.007200;
act_path_coeff[5] = -0.123113;
//only record the last call's performance
//the first one is for creating the cpu/cuda data structures
if(gauge_order == QUDA_QDP_GAUGE_ORDER){
computeFatLinkQuda(fatlink, sitelink, act_path_coeff, &qudaGaugeParam,
QUDA_COMPUTE_FAT_STANDARD);
} // gauge order is QDP_GAUGE_ORDER
cpuOutLink->setGauge((void**)fatlink);
cudaFatLink->loadCPUField(*cpuOutLink, QUDA_CPU_FIELD_LOCATION);
hisq::setUnitarizeLinksConstants(unitarize_eps,
max_allowed_error,
reunit_allow_svd,
reunit_svd_only,
svd_rel_error,
svd_abs_error);
hisq::setUnitarizeLinksPadding(0,0);
int* num_failures_dev;
cudaMalloc(&num_failures_dev, sizeof(int));
cudaMemset(num_failures_dev, 0, sizeof(int));
struct timeval t0, t1;
gettimeofday(&t0,NULL);
hisq::unitarizeLinksCuda(qudaGaugeParam,*cudaFatLink, cudaULink, num_failures_dev);
cudaThreadSynchronize();
gettimeofday(&t1,NULL);
int num_failures=0;
cudaMemcpy(&num_failures, num_failures_dev, sizeof(int), cudaMemcpyDeviceToHost);
delete cudaFatLink;
delete cudaULink;
for(int dir=0; dir<4; ++dir) cudaFreeHost(sitelink[dir]);
cudaFree(num_failures_dev);
#ifdef MULTI_GPU
exchange_llfat_cleanup();
#endif
endQuda();
printfQuda("Unitarization time: %g ms\n", TDIFF(t0,t1)*1000);
return num_failures;
}
static void
gauge_force_test(void)
{
int max_length = 6;
initQuda(device);
setVerbosityQuda(QUDA_VERBOSE,"",stdout);
qudaGaugeParam = newQudaGaugeParam();
qudaGaugeParam.X[0] = xdim;
qudaGaugeParam.X[1] = ydim;
qudaGaugeParam.X[2] = zdim;
qudaGaugeParam.X[3] = tdim;
setDims(qudaGaugeParam.X);
qudaGaugeParam.anisotropy = 1.0;
qudaGaugeParam.cpu_prec = link_prec;
qudaGaugeParam.cuda_prec = link_prec;
qudaGaugeParam.cuda_prec_sloppy = link_prec;
qudaGaugeParam.reconstruct = link_recon;
qudaGaugeParam.reconstruct_sloppy = link_recon;
qudaGaugeParam.type = QUDA_SU3_LINKS; // in this context, just means these are site links
qudaGaugeParam.gauge_order = gauge_order;
qudaGaugeParam.t_boundary = QUDA_PERIODIC_T;
qudaGaugeParam.gauge_fix = QUDA_GAUGE_FIXED_NO;
qudaGaugeParam.ga_pad = 0;
qudaGaugeParam.mom_ga_pad = 0;
size_t gSize = qudaGaugeParam.cpu_prec;
void* sitelink;
void* sitelink_1d;
#ifdef GPU_DIRECT
sitelink_1d = pinned_malloc(4*V*gaugeSiteSize*gSize);
#else
sitelink_1d = safe_malloc(4*V*gaugeSiteSize*gSize);
#endif
// this is a hack to have site link generated in 2d
// then copied to 1d array in "MILC" format
void* sitelink_2d[4];
#ifdef GPU_DIRECT
for(int i=0;i<4;i++) sitelink_2d[i] = pinned_malloc(V*gaugeSiteSize*qudaGaugeParam.cpu_prec);
#else
for(int i=0;i<4;i++) sitelink_2d[i] = safe_malloc(V*gaugeSiteSize*qudaGaugeParam.cpu_prec);
#endif
// fills the gauge field with random numbers
createSiteLinkCPU(sitelink_2d, qudaGaugeParam.cpu_prec, 0);
//copy the 2d sitelink to 1d milc format
for(int dir = 0; dir < 4; dir++){
for(int i=0; i < V; i++){
char* src = ((char*)sitelink_2d[dir]) + i * gaugeSiteSize* qudaGaugeParam.cpu_prec;
char* dst = ((char*)sitelink_1d) + (4*i+dir)*gaugeSiteSize*qudaGaugeParam.cpu_prec ;
memcpy(dst, src, gaugeSiteSize*qudaGaugeParam.cpu_prec);
}
}
if (qudaGaugeParam.gauge_order == QUDA_MILC_GAUGE_ORDER){
sitelink = sitelink_1d;
}else if (qudaGaugeParam.gauge_order == QUDA_QDP_GAUGE_ORDER) {
sitelink = (void**)sitelink_2d;
} else {
errorQuda("Unsupported gauge order %d", qudaGaugeParam.gauge_order);
}
#ifdef MULTI_GPU
void* sitelink_ex_2d[4];
void* sitelink_ex_1d;
sitelink_ex_1d = pinned_malloc(4*V_ex*gaugeSiteSize*gSize);
for(int i=0;i < 4;i++) sitelink_ex_2d[i] = pinned_malloc(V_ex*gaugeSiteSize*gSize);
int X1= Z[0];
int X2= Z[1];
int X3= Z[2];
int X4= Z[3];
for(int i=0; i < V_ex; i++){
int sid = i;
int oddBit=0;
if(i >= Vh_ex){
sid = i - Vh_ex;
oddBit = 1;
}
int za = sid/E1h;
int x1h = sid - za*E1h;
int zb = za/E2;
int x2 = za - zb*E2;
int x4 = zb/E3;
int x3 = zb - x4*E3;
int x1odd = (x2 + x3 + x4 + oddBit) & 1;
int x1 = 2*x1h + x1odd;
if( x1< 2 || x1 >= X1 +2
|| x2< 2 || x2 >= X2 +2
|| x3< 2 || x3 >= X3 +2
|| x4< 2 || x4 >= X4 +2){
continue;
}
x1 = (x1 - 2 + X1) % X1;
x2 = (x2 - 2 + X2) % X2;
x3 = (x3 - 2 + X3) % X3;
x4 = (x4 - 2 + X4) % X4;
int idx = (x4*X3*X2*X1+x3*X2*X1+x2*X1+x1)>>1;
if(oddBit){
idx += Vh;
}
for(int dir= 0; dir < 4; dir++){
char* src = (char*)sitelink_2d[dir];
char* dst = (char*)sitelink_ex_2d[dir];
memcpy(dst+i*gaugeSiteSize*gSize, src+idx*gaugeSiteSize*gSize, gaugeSiteSize*gSize);
}//dir
}//i
for(int dir = 0; dir < 4; dir++){
for(int i=0; i < V_ex; i++){
char* src = ((char*)sitelink_ex_2d[dir]) + i * gaugeSiteSize* qudaGaugeParam.cpu_prec;
char* dst = ((char*)sitelink_ex_1d) + (4*i+dir)*gaugeSiteSize*qudaGaugeParam.cpu_prec ;
memcpy(dst, src, gaugeSiteSize*qudaGaugeParam.cpu_prec);
}
}
#endif
void* mom = safe_malloc(4*V*momSiteSize*gSize);
void* refmom = safe_malloc(4*V*momSiteSize*gSize);
memset(mom, 0, 4*V*momSiteSize*gSize);
//initialize some data in cpuMom
createMomCPU(mom, qudaGaugeParam.cpu_prec);
memcpy(refmom, mom, 4*V*momSiteSize*gSize);
double loop_coeff_d[sizeof(loop_coeff_f)/sizeof(float)];
for(unsigned int i=0;i < sizeof(loop_coeff_f)/sizeof(float); i++){
loop_coeff_d[i] = loop_coeff_f[i];
}
void* loop_coeff;
if(qudaGaugeParam.cuda_prec == QUDA_SINGLE_PRECISION){
loop_coeff = (void*)&loop_coeff_f[0];
}else{
loop_coeff = loop_coeff_d;
}
double eb3 = 0.3;
int num_paths = sizeof(path_dir_x)/sizeof(path_dir_x[0]);
int** input_path_buf[4];
for(int dir =0; dir < 4; dir++){
input_path_buf[dir] = (int**)safe_malloc(num_paths*sizeof(int*));
for(int i=0;i < num_paths;i++){
input_path_buf[dir][i] = (int*)safe_malloc(length[i]*sizeof(int));
if(dir == 0) memcpy(input_path_buf[dir][i], path_dir_x[i], length[i]*sizeof(int));
else if(dir ==1) memcpy(input_path_buf[dir][i], path_dir_y[i], length[i]*sizeof(int));
else if(dir ==2) memcpy(input_path_buf[dir][i], path_dir_z[i], length[i]*sizeof(int));
else if(dir ==3) memcpy(input_path_buf[dir][i], path_dir_t[i], length[i]*sizeof(int));
}
}
if (tune) {
printfQuda("Tuning...\n");
setTuning(QUDA_TUNE_YES);
}
struct timeval t0, t1;
double timeinfo[3];
/* Multiple execution to exclude warmup time in the first run*/
for (int i =0;i < attempts; i++){
gettimeofday(&t0, NULL);
computeGaugeForceQuda(mom, sitelink, input_path_buf, length,
loop_coeff_d, num_paths, max_length, eb3,
&qudaGaugeParam, timeinfo);
gettimeofday(&t1, NULL);
}
double total_time = t1.tv_sec - t0.tv_sec + 0.000001*(t1.tv_usec - t0.tv_usec);
//The number comes from CPU implementation in MILC, gauge_force_imp.c
int flops=153004;
if (verify_results){
for(int i = 0;i < attempts;i++){
#ifdef MULTI_GPU
//last arg=0 means no optimization for communication, i.e. exchange data in all directions
//even they are not partitioned
int R[4] = {2, 2, 2, 2};
exchange_cpu_sitelink_ex(qudaGaugeParam.X, R, (void**)sitelink_ex_2d,
QUDA_QDP_GAUGE_ORDER, qudaGaugeParam.cpu_prec, 0, 4);
gauge_force_reference(refmom, eb3, sitelink_2d, sitelink_ex_2d, qudaGaugeParam.cpu_prec,
input_path_buf, length, loop_coeff, num_paths);
#else
gauge_force_reference(refmom, eb3, sitelink_2d, NULL, qudaGaugeParam.cpu_prec,
input_path_buf, length, loop_coeff, num_paths);
#endif
}
int res;
res = compare_floats(mom, refmom, 4*V*momSiteSize, 1e-3, qudaGaugeParam.cpu_prec);
strong_check_mom(mom, refmom, 4*V, qudaGaugeParam.cpu_prec);
printf("Test %s\n",(1 == res) ? "PASSED" : "FAILED");
}
double perf = 1.0* flops*V/(total_time*1e+9);
double kernel_perf = 1.0*flops*V/(timeinfo[1]*1e+9);
printf("init and cpu->gpu time: %.2f ms, kernel time: %.2f ms, gpu->cpu and cleanup time: %.2f total time =%.2f ms\n",
timeinfo[0]*1e+3, timeinfo[1]*1e+3, timeinfo[2]*1e+3, total_time*1e+3);
printf("kernel performance: %.2f GFLOPS, overall performance : %.2f GFLOPS\n", kernel_perf, perf);
for(int dir = 0; dir < 4; dir++){
for(int i=0;i < num_paths; i++) host_free(input_path_buf[dir][i]);
host_free(input_path_buf[dir]);
}
host_free(sitelink_1d);
for(int dir=0;dir < 4;dir++) host_free(sitelink_2d[dir]);
#ifdef MULTI_GPU
host_free(sitelink_ex_1d);
for(int dir=0; dir < 4; dir++) host_free(sitelink_ex_2d[dir]);
#endif
host_free(mom);
host_free(refmom);
endQuda();
}
static void
llfat_test(int test)
{
QudaGaugeParam qudaGaugeParam;
#ifdef MULTI_GPU
void* ghost_sitelink[4];
void* ghost_sitelink_diag[16];
#endif
initQuda(device);
cpu_prec = prec;
gSize = cpu_prec;
qudaGaugeParam = newQudaGaugeParam();
qudaGaugeParam.anisotropy = 1.0;
qudaGaugeParam.X[0] = xdim;
qudaGaugeParam.X[1] = ydim;
qudaGaugeParam.X[2] = zdim;
qudaGaugeParam.X[3] = tdim;
setDims(qudaGaugeParam.X);
qudaGaugeParam.cpu_prec = cpu_prec;
qudaGaugeParam.cuda_prec = prec;
qudaGaugeParam.gauge_order = gauge_order;
qudaGaugeParam.type=QUDA_WILSON_LINKS;
qudaGaugeParam.reconstruct = link_recon;
/*
qudaGaugeParam.flag = QUDA_FAT_PRESERVE_CPU_GAUGE
| QUDA_FAT_PRESERVE_GPU_GAUGE
| QUDA_FAT_PRESERVE_COMM_MEM;
*/
qudaGaugeParam.preserve_gauge =0;
void* fatlink;
if (cudaMallocHost((void**)&fatlink, 4*V*gaugeSiteSize*gSize) == cudaErrorMemoryAllocation) {
errorQuda("ERROR: cudaMallocHost failed for fatlink\n");
}
void* longlink;
if (cudaMallocHost((void**)&longlink, 4*V*gaugeSiteSize*gSize) == cudaErrorMemoryAllocation) {
errorQuda("ERROR: cudaMallocHost failed for longlink\n");
} // page-locked memory
void* sitelink[4];
for(int i=0;i < 4;i++){
if (cudaMallocHost((void**)&sitelink[i], V*gaugeSiteSize*gSize) == cudaErrorMemoryAllocation) {
errorQuda("ERROR: cudaMallocHost failed for sitelink\n");
}
}
void* sitelink_ex[4];
for(int i=0;i < 4;i++){
if (cudaMallocHost((void**)&sitelink_ex[i], V_ex*gaugeSiteSize*gSize) == cudaErrorMemoryAllocation) {
errorQuda("ERROR: cudaMallocHost failed for sitelink_ex\n");
}
}
void* milc_sitelink;
milc_sitelink = (void*)malloc(4*V*gaugeSiteSize*gSize);
if(milc_sitelink == NULL){
errorQuda("ERROR: allocating milc_sitelink failed\n");
}
void* milc_sitelink_ex;
milc_sitelink_ex = (void*)malloc(4*V_ex*gaugeSiteSize*gSize);
if(milc_sitelink_ex == NULL){
errorQuda("Error: allocating milc_sitelink failed\n");
}
createSiteLinkCPU(sitelink, qudaGaugeParam.cpu_prec, 1);
if(gauge_order == QUDA_MILC_GAUGE_ORDER){
for(int i=0; i<V; ++i){
for(int dir=0; dir<4; ++dir){
char* src = (char*)sitelink[dir];
memcpy((char*)milc_sitelink + (i*4 + dir)*gaugeSiteSize*gSize, src+i*gaugeSiteSize*gSize, gaugeSiteSize*gSize);
}
}
}
int X1=Z[0];
int X2=Z[1];
int X3=Z[2];
int X4=Z[3];
for(int i=0; i < V_ex; i++){
int sid = i;
int oddBit=0;
if(i >= Vh_ex){
sid = i - Vh_ex;
oddBit = 1;
}
int za = sid/E1h;
int x1h = sid - za*E1h;
int zb = za/E2;
int x2 = za - zb*E2;
int x4 = zb/E3;
int x3 = zb - x4*E3;
int x1odd = (x2 + x3 + x4 + oddBit) & 1;
int x1 = 2*x1h + x1odd;
if( x1< 2 || x1 >= X1 +2
|| x2< 2 || x2 >= X2 +2
|| x3< 2 || x3 >= X3 +2
|| x4< 2 || x4 >= X4 +2){
#ifdef MULTI_GPU
continue;
#endif
}
x1 = (x1 - 2 + X1) % X1;
x2 = (x2 - 2 + X2) % X2;
x3 = (x3 - 2 + X3) % X3;
x4 = (x4 - 2 + X4) % X4;
int idx = (x4*X3*X2*X1+x3*X2*X1+x2*X1+x1)>>1;
if(oddBit){
idx += Vh;
}
for(int dir= 0; dir < 4; dir++){
char* src = (char*)sitelink[dir];
char* dst = (char*)sitelink_ex[dir];
memcpy(dst+i*gaugeSiteSize*gSize, src+idx*gaugeSiteSize*gSize, gaugeSiteSize*gSize);
// milc ordering
memcpy((char*)milc_sitelink_ex + (i*4 + dir)*gaugeSiteSize*gSize, src+idx*gaugeSiteSize*gSize, gaugeSiteSize*gSize);
}//dir
}//i
double act_path_coeff[6];
for(int i=0;i < 6;i++){
act_path_coeff[i]= 0.1*i;
}
//only record the last call's performance
//the first one is for creating the cpu/cuda data structures
struct timeval t0, t1;
void** sitelink_ptr;
QudaComputeFatMethod method = (test) ? QUDA_COMPUTE_FAT_EXTENDED_VOLUME : QUDA_COMPUTE_FAT_STANDARD;
if(gauge_order == QUDA_QDP_GAUGE_ORDER){
sitelink_ptr = (test) ? (void**)sitelink_ex : (void**)sitelink;
}else{
sitelink_ptr = (test) ? (void**)milc_sitelink_ex : (void**)milc_sitelink;
}
void* longlink_ptr = longlink;
#ifdef MULTI_GPU
if(!test) longlink_ptr = NULL; // Have to have an extended volume for the long-link calculation
#endif
gettimeofday(&t0, NULL);
computeKSLinkQuda(fatlink, longlink_ptr, NULL, milc_sitelink, act_path_coeff, &qudaGaugeParam, method);
gettimeofday(&t1, NULL);
double secs = TDIFF(t0,t1);
void* fat_reflink[4];
void* long_reflink[4];
for(int i=0;i < 4;i++){
fat_reflink[i] = malloc(V*gaugeSiteSize*gSize);
if(fat_reflink[i] == NULL){
errorQuda("ERROR; allocate fat_reflink[%d] failed\n", i);
}
long_reflink[i] = malloc(V*gaugeSiteSize*gSize);
if(long_reflink[i] == NULL) errorQuda("ERROR; allocate long_reflink[%d] failed\n", i);
}
if (verify_results){
//FIXME: we have this compplication because references takes coeff as float/double
// depending on the precision while the GPU code aways take coeff as double
void* coeff;
double coeff_dp[6];
float coeff_sp[6];
for(int i=0;i < 6;i++){
coeff_sp[i] = coeff_dp[i] = act_path_coeff[i];
}
if(prec == QUDA_DOUBLE_PRECISION){
coeff = coeff_dp;
}else{
coeff = coeff_sp;
}
#ifdef MULTI_GPU
int optflag = 0;
//we need x,y,z site links in the back and forward T slice
// so it is 3*2*Vs_t
int Vs[4] = {Vs_x, Vs_y, Vs_z, Vs_t};
for(int i=0;i < 4; i++){
ghost_sitelink[i] = malloc(8*Vs[i]*gaugeSiteSize*gSize);
if (ghost_sitelink[i] == NULL){
printf("ERROR: malloc failed for ghost_sitelink[%d] \n",i);
exit(1);
}
}
/*
nu | |
|_____|
mu
*/
for(int nu=0;nu < 4;nu++){
for(int mu=0; mu < 4;mu++){
if(nu == mu){
ghost_sitelink_diag[nu*4+mu] = NULL;
}else{
//the other directions
int dir1, dir2;
for(dir1= 0; dir1 < 4; dir1++){
if(dir1 !=nu && dir1 != mu){
break;
}
}
for(dir2=0; dir2 < 4; dir2++){
if(dir2 != nu && dir2 != mu && dir2 != dir1){
break;
}
}
ghost_sitelink_diag[nu*4+mu] = malloc(Z[dir1]*Z[dir2]*gaugeSiteSize*gSize);
if(ghost_sitelink_diag[nu*4+mu] == NULL){
errorQuda("malloc failed for ghost_sitelink_diag\n");
}
memset(ghost_sitelink_diag[nu*4+mu], 0, Z[dir1]*Z[dir2]*gaugeSiteSize*gSize);
}
}
}
exchange_cpu_sitelink(qudaGaugeParam.X, sitelink, ghost_sitelink, ghost_sitelink_diag, qudaGaugeParam.cpu_prec, &qudaGaugeParam, optflag);
llfat_reference_mg(fat_reflink, sitelink, ghost_sitelink, ghost_sitelink_diag, qudaGaugeParam.cpu_prec, coeff);
{
int R[4] = {2,2,2,2};
exchange_cpu_sitelink_ex(qudaGaugeParam.X, R, sitelink_ex, QUDA_QDP_GAUGE_ORDER, qudaGaugeParam.cpu_prec, 0, 4);
computeLongLinkCPU(long_reflink, sitelink_ex, qudaGaugeParam.cpu_prec, coeff);
}
#else
llfat_reference(fat_reflink, sitelink, qudaGaugeParam.cpu_prec, coeff);
computeLongLinkCPU(long_reflink, sitelink, qudaGaugeParam.cpu_prec, coeff);
#endif
}//verify_results
//format change for fatlink and longlink
void* myfatlink[4];
void* mylonglink[4];
for(int i=0;i < 4;i++){
myfatlink[i] = malloc(V*gaugeSiteSize*gSize);
if(myfatlink[i] == NULL){
printf("Error: malloc failed for myfatlink[%d]\n", i);
exit(1);
}
mylonglink[i] = malloc(V*gaugeSiteSize*gSize);
if(mylonglink[i] == NULL){
printf("Error: malloc failed for mylonglink[%d]\n", i);
exit(1);
}
memset(myfatlink[i], 0, V*gaugeSiteSize*gSize);
memset(mylonglink[i], 0, V*gaugeSiteSize*gSize);
}
for(int i=0;i < V; i++){
for(int dir=0; dir< 4; dir++){
char* src = ((char*)fatlink)+ (4*i+dir)*gaugeSiteSize*gSize;
char* dst = ((char*)myfatlink[dir]) + i*gaugeSiteSize*gSize;
memcpy(dst, src, gaugeSiteSize*gSize);
src = ((char*)longlink)+ (4*i+dir)*gaugeSiteSize*gSize;
dst = ((char*)mylonglink[dir]) + i*gaugeSiteSize*gSize;
memcpy(dst, src, gaugeSiteSize*gSize);
}
}
if (verify_results) {
printfQuda("Checking fat links...\n");
int res=1;
for(int dir=0; dir<4; dir++){
res &= compare_floats(fat_reflink[dir], myfatlink[dir], V*gaugeSiteSize, 1e-3, qudaGaugeParam.cpu_prec);
}
strong_check_link(myfatlink, "GPU results: ",
fat_reflink, "CPU reference results:",
V, qudaGaugeParam.cpu_prec);
printfQuda("Fat-link test %s\n\n",(1 == res) ? "PASSED" : "FAILED");
#ifdef MULTI_GPU
if(test){
#endif
printfQuda("Checking long links...\n");
res = 1;
for(int dir=0; dir<4; ++dir){
res &= compare_floats(long_reflink[dir], mylonglink[dir], V*gaugeSiteSize, 1e-3, qudaGaugeParam.cpu_prec);
}
strong_check_link(mylonglink, "GPU results: ",
long_reflink, "CPU reference results:",
V, qudaGaugeParam.cpu_prec);
printfQuda("Long-link test %s\n\n",(1 == res) ? "PASSED" : "FAILED");
#ifdef MULTI_GPU
}else{ // !test
printfQuda("Extended volume is required for multi-GPU long-link construction\n");
}
#endif
}
int volume = qudaGaugeParam.X[0]*qudaGaugeParam.X[1]*qudaGaugeParam.X[2]*qudaGaugeParam.X[3];
int flops= 61632;
#ifdef MULTI_GPU
if(test) flops += (252*4); // long-link contribution
#else
flops += (252*4); // 2*117 + 18 (two matrix-matrix multiplications and a matrix rescale)
#endif
double perf = 1.0* flops*volume/(secs*1024*1024*1024);
printfQuda("link computation time =%.2f ms, flops= %.2f Gflops\n", secs*1000, perf);
for(int i=0;i < 4;i++){
free(myfatlink[i]);
}
#ifdef MULTI_GPU
if (verify_results){
int i;
for(i=0;i < 4;i++){
free(ghost_sitelink[i]);
}
for(i=0;i <4; i++){
for(int j=0;j <4; j++){
if (i==j){
continue;
}
free(ghost_sitelink_diag[i*4+j]);
}
}
}
#endif
for(int i=0;i < 4; i++){
cudaFreeHost(sitelink[i]);
cudaFreeHost(sitelink_ex[i]);
free(fat_reflink[i]);
}
cudaFreeHost(fatlink);
cudaFreeHost(longlink);
if(milc_sitelink) free(milc_sitelink);
if(milc_sitelink_ex) free(milc_sitelink_ex);
#ifdef MULTI_GPU
exchange_llfat_cleanup();
#endif
endQuda();
}
