LIBXSMM_INLINE LIBXSMM_RETARGETABLE internal_code_type* internal_init(void)
{
/*const*/internal_code_type* result;
int i;
#if !defined(LIBXSMM_OPENMP)
# if !defined(LIBXSMM_NOSYNC)
static int internal_reglock_check = 1; /* setup the locks in a thread-safe fashion */
assert(sizeof(internal_reglock) == (INTERNAL_REGLOCK_COUNT * sizeof(*internal_reglock)));
if (1 == LIBXSMM_ATOMIC_LOAD(&internal_reglock_check, LIBXSMM_ATOMIC_SEQ_CST)) {
LIBXSMM_ATOMIC_ADD_FETCH(&internal_reglock_check, 1, LIBXSMM_ATOMIC_SEQ_CST);
if (2 == internal_reglock_check) {
for (i = 0; i < INTERNAL_REGLOCK_COUNT; ++i) LIBXSMM_LOCK_INIT(internal_reglock + i);
LIBXSMM_ATOMIC_STORE_ZERO(&internal_reglock_check, LIBXSMM_ATOMIC_SEQ_CST);
}
}
while (0 != internal_reglock_check); /* wait until locks are initialized */
for (i = 0; i < INTERNAL_REGLOCK_COUNT; ++i) LIBXSMM_LOCK_ACQUIRE(internal_reglock + i);
# endif
#else
# pragma omp critical(internal_reglock)
#endif
{
result = LIBXSMM_ATOMIC_LOAD(&internal_registry, LIBXSMM_ATOMIC_SEQ_CST);
if (0 == result) {
int init_code;
/* set internal_target_archid */
libxsmm_set_target_arch(getenv("LIBXSMM_TARGET"));
{ /* select prefetch strategy for JIT */
const char *const env_prefetch = getenv("LIBXSMM_PREFETCH");
if (0 == env_prefetch || 0 == *env_prefetch) {
#if (0 > LIBXSMM_PREFETCH) /* permitted by LIBXSMM_PREFETCH_AUTO */
internal_prefetch = (LIBXSMM_X86_AVX512_MIC != internal_target_archid
? LIBXSMM_PREFETCH_NONE : LIBXSMM_PREFETCH_AL2BL2_VIA_C);
#else
internal_prefetch = LIBXSMM_MAX(INTERNAL_PREFETCH, 0);
#endif
}
else { /* user input considered even if LIBXSMM_PREFETCH_AUTO is disabled */
switch (atoi(env_prefetch)) {
case 2: internal_prefetch = LIBXSMM_PREFETCH_SIGONLY; break;
case 3: internal_prefetch = LIBXSMM_PREFETCH_BL2_VIA_C; break;
case 4: internal_prefetch = LIBXSMM_PREFETCH_AL2; break;
case 5: internal_prefetch = LIBXSMM_PREFETCH_AL2_AHEAD; break;
case 6: internal_prefetch = LIBXSMM_PREFETCH_AL2BL2_VIA_C; break;
case 7: internal_prefetch = LIBXSMM_PREFETCH_AL2BL2_VIA_C_AHEAD; break;
case 8: internal_prefetch = LIBXSMM_PREFETCH_AL2_JPST; break;
case 9: internal_prefetch = LIBXSMM_PREFETCH_AL2BL2_VIA_C_JPST; break;
default: internal_prefetch = LIBXSMM_PREFETCH_NONE;
}
}
}
libxsmm_hash_init(internal_target_archid);
libxsmm_gemm_diff_init(internal_target_archid);
init_code = libxsmm_gemm_init(internal_target_archid, internal_prefetch);
#if defined(__TRACE)
{
int filter_threadid = 0, filter_mindepth = 1, filter_maxnsyms = 0;
const char *const env_trace_init = getenv("LIBXSMM_TRACE");
if (EXIT_SUCCESS == init_code && 0 != env_trace_init && 0 != *env_trace_init) {
char buffer[32];
if (1 == sscanf(env_trace_init, "%32[^,],", buffer)) {
sscanf(buffer, "%i", &filter_threadid);
}
if (1 == sscanf(env_trace_init, "%*[^,],%32[^,],", buffer)) {
sscanf(buffer, "%i", &filter_mindepth);
}
if (1 == sscanf(env_trace_init, "%*[^,],%*[^,],%32s", buffer)) {
sscanf(buffer, "%i", &filter_maxnsyms);
}
else {
filter_maxnsyms = -1; /* all */
}
}
init_code = libxsmm_trace_init(filter_threadid - 1, filter_mindepth, filter_maxnsyms);
}
#endif
if (EXIT_SUCCESS == init_code) {
assert(0 == internal_registry_keys && 0 == internal_registry); /* should never happen */
result = (internal_code_type*)libxsmm_malloc(LIBXSMM_REGSIZE * sizeof(internal_code_type));
internal_registry_keys = (internal_regkey_type*)libxsmm_malloc(LIBXSMM_REGSIZE * sizeof(internal_regkey_type));
if (0 != result && 0 != internal_registry_keys) {
const char *const env_verbose = getenv("LIBXSMM_VERBOSE");
internal_statistic_mnk = (unsigned int)(pow((double)(LIBXSMM_MAX_MNK), 0.3333333333333333) + 0.5);
internal_statistic_sml = 13; internal_statistic_med = 23;
if (0 != env_verbose && 0 != *env_verbose) {
internal_verbose_mode = atoi(env_verbose);
}
#if !defined(NDEBUG)
else {
internal_verbose_mode = 1; /* quiet -> verbose */
}
#endif
for (i = 0; i < LIBXSMM_REGSIZE; ++i) result[i].pmm = 0;
/* omit registering code if JIT is enabled and if an ISA extension is found
* which is beyond the static code path used to compile the library
*/
#if defined(LIBXSMM_BUILD)
# if (0 != LIBXSMM_JIT) && !defined(__MIC__)
/* check if target arch. permits execution (arch. may be overridden) */
if (LIBXSMM_STATIC_TARGET_ARCH <= internal_target_archid &&
(LIBXSMM_X86_AVX > internal_target_archid /* jit is not available */
/* condition allows to avoid JIT (if static code is good enough) */
|| LIBXSMM_STATIC_TARGET_ARCH == internal_target_archid))
# endif
{ /* opening a scope for eventually declaring variables */
/* setup the dispatch table for the statically generated code */
# include <libxsmm_dispatch.h>
}
#endif
atexit(libxsmm_finalize);
LIBXSMM_ATOMIC_STORE(&internal_registry, result, LIBXSMM_ATOMIC_SEQ_CST);
}
else {
#if !defined(NDEBUG) && defined(__TRACE) /* library code is expected to be mute */
fprintf(stderr, "LIBXSMM: failed to allocate code registry!\n");
#endif
libxsmm_free(internal_registry_keys);
libxsmm_free(result);
}
}
#if !defined(NDEBUG) && defined(__TRACE) /* library code is expected to be mute */
else {
fprintf(stderr, "LIBXSMM: failed to initialize sub-component (error #%i)!\n", init_code);
}
#endif
}
}
#if !defined(LIBXSMM_OPENMP) && !defined(LIBXSMM_NOSYNC) /* release locks */
for (i = 0; i < INTERNAL_REGLOCK_COUNT; ++i) LIBXSMM_LOCK_RELEASE(internal_reglock + i);
#endif
assert(result);
return result;
}
int main(void)
{
const libxsmm_blasint m[] = { 1, 1, 1, 1, 2, 3, 5, 5, 5, 16, 63, 16, 75, 2507 };
const libxsmm_blasint n[] = { 1, 7, 7, 7, 2, 3, 1, 1, 1, 16, 31, 500, 130, 1975 };
const libxsmm_blasint ldi[] = { 1, 1, 1, 9, 2, 3, 5, 8, 8, 16, 64, 16, 87, 3000 };
const libxsmm_blasint ldo[] = { 1, 7, 8, 8, 2, 3, 1, 1, 4, 16, 32, 512, 136, 3072 };
const int start = 0, ntests = sizeof(m) / sizeof(*m);
libxsmm_blasint max_size_a = 0, max_size_b = 0;
unsigned int nerrors = 0;
ELEM_TYPE *a = 0, *b = 0;
int test;
for (test = start; test < ntests; ++test) {
const libxsmm_blasint size_a = ldi[test] * n[test], size_b = ldo[test] * m[test];
assert(m[test] <= ldi[test] && n[test] <= ldo[test]);
max_size_a = LIBXSMM_MAX(max_size_a, size_a);
max_size_b = LIBXSMM_MAX(max_size_b, size_b);
}
a = (ELEM_TYPE*)libxsmm_malloc((size_t)(max_size_a * sizeof(ELEM_TYPE)));
b = (ELEM_TYPE*)libxsmm_malloc((size_t)(max_size_b * sizeof(ELEM_TYPE)));
assert(0 != a && 0 != b);
LIBXSMM_MATINIT(ELEM_TYPE, 42, a, max_size_a, 1, max_size_a, 1.0);
LIBXSMM_MATINIT(ELEM_TYPE, 0, b, max_size_b, 1, max_size_b, 1.0);
for (test = start; test < ntests; ++test) {
unsigned int testerrors = (EXIT_SUCCESS == libxsmm_otrans(
b, a, sizeof(ELEM_TYPE), m[test], n[test],
ldi[test], ldo[test]) ? 0 : 1);
if (0 == testerrors) {
libxsmm_blasint i, j;
for (i = 0; i < n[test]; ++i) {
for (j = 0; j < m[test]; ++j) {
const libxsmm_blasint u = i * ldi[test] + j;
const libxsmm_blasint v = j * ldo[test] + i;
testerrors += (LIBXSMM_FEQ(a[u], b[v]) ? 0u : 1u);
}
}
}
if (nerrors < testerrors) {
nerrors = testerrors;
}
}
if (0 == nerrors) { /* previous results are correct and may be used to validate other tests */
for (test = start; test < ntests; ++test) {
/* prepare expected results in b (correct according to the previous test block) */
libxsmm_otrans(b, a, sizeof(ELEM_TYPE), m[test], n[test], ldi[test], ldo[test]);
if (m[test] == n[test] && ldi[test] == ldo[test]) {
unsigned int testerrors = (EXIT_SUCCESS == libxsmm_otrans(
a, a, sizeof(ELEM_TYPE), m[test], n[test],
ldi[test], ldo[test]) ? 0 : 1);
if (0 == testerrors) {
libxsmm_blasint i, j;
for (i = 0; i < n[test]; ++i) {
for (j = 0; j < m[test]; ++j) {
/* address serves both a and b since ldi and ldo are equal */
const libxsmm_blasint uv = i * ldi[test] + j;
testerrors += (LIBXSMM_FEQ(a[uv], b[uv]) ? 0u : 1u);
}
}
}
if (nerrors < testerrors) {
nerrors = testerrors;
}
}
else { /* negative tests */
nerrors = LIBXSMM_MAX(EXIT_SUCCESS != libxsmm_otrans(
a, a, sizeof(ELEM_TYPE), m[test], n[test],
ldi[test], ldo[test]) ? 0u : 1u, nerrors);
}
}
}
libxsmm_free(a);
libxsmm_free(b);
if (0 == nerrors) {
return EXIT_SUCCESS;
}
else {
# if defined(_DEBUG)
fprintf(stderr, "errors=%u\n", nerrors);
# endif
return EXIT_FAILURE;
}
}
int main(int argc, char* argv[])
{
LIBXSMM_GEMM_CONST libxsmm_blasint m = (1 < argc ? atoi(argv[1]) : 1024);
LIBXSMM_GEMM_CONST libxsmm_blasint k = (3 < argc ? atoi(argv[3]) : m);
LIBXSMM_GEMM_CONST libxsmm_blasint n = (2 < argc ? atoi(argv[2]) : k);
const libxsmm_blasint bm = (4 < argc ? atoi(argv[4]) : 32);
const libxsmm_blasint bk = (6 < argc ? atoi(argv[6]) : bm);
const libxsmm_blasint bn = (5 < argc ? atoi(argv[5]) : bk);
const libxsmm_bgemm_order order = (libxsmm_bgemm_order)(7 < argc ? atoi(argv[7]) : 0);
const int nrepeat = (8 < argc ? atoi(argv[8]) : 100);
const libxsmm_blasint b_m1 = (9 < argc ? atoi(argv[9]) : 1);
const libxsmm_blasint b_n1 = (10 < argc ? atoi(argv[10]) : 1);
const libxsmm_blasint b_k1 = (11 < argc ? atoi(argv[11]) : 1);
const libxsmm_blasint b_k2 = (12 < argc ? atoi(argv[12]) : 1);
const int ab = (13 < argc ? atoi(argv[13]) : 0);
LIBXSMM_GEMM_CONST libxsmm_blasint lda = (14 < argc ? atoi(argv[13]) : m);
LIBXSMM_GEMM_CONST libxsmm_blasint ldb = (15 < argc ? atoi(argv[14]) : k);
LIBXSMM_GEMM_CONST libxsmm_blasint ldc = (16 < argc ? atoi(argv[15]) : m);
LIBXSMM_GEMM_CONST char transa = 'N', transb = 'N'; /* no transposes */
LIBXSMM_GEMM_CONST ITYPE alpha = 1, beta = 1;
const int gemm_flags = LIBXSMM_GEMM_FLAGS(transa, transb);
const double gflops = 2.0 * m * n * k * 1E-9;
int result = EXIT_SUCCESS;
#if defined(CHECK)
const char *const env_check = getenv("CHECK");
const double check = LIBXSMM_ABS(0 == env_check ? 0 : atof(env_check));
#endif
if (argc > 1 && !strncmp(argv[1], "-h", 3)) { /* check command line */
printf("\nUsage: ./bgemm [M] [N] [K] [bm] [bn] [bk] [order] [reps] [b_m1] [b_n1] [b_k1] [b_k2] [verbose]\n\n");
return result;
}
MYASSERT(m % b_m1 == 0);
MYASSERT(n % b_n1 == 0);
MYASSERT(k % b_k1 == 0);
MYASSERT(m/b_m1 % bm == 0);
MYASSERT(n/b_n1 % bn == 0);
MYASSERT(k/b_k1/b_k2 % bk == 0);
#if defined(LIBXSMM_OFFLOAD_TARGET)
# pragma offload target(LIBXSMM_OFFLOAD_TARGET)
#endif
{
ITYPE* agold = (ITYPE*)libxsmm_malloc((size_t)(lda * k * sizeof(ITYPE)));
ITYPE* bgold = (ITYPE*)libxsmm_malloc((size_t)(ldb * n * sizeof(ITYPE)));
ITYPE* cgold = (ITYPE*)libxsmm_malloc((size_t)(ldc * n * sizeof(ITYPE)));
ITYPE* a = (ITYPE*)libxsmm_malloc((size_t)(m * k * sizeof(ITYPE)));
ITYPE* b = (ITYPE*)libxsmm_malloc((size_t)(k * n * sizeof(ITYPE)));
ITYPE* c = (ITYPE*)libxsmm_malloc((size_t)(m * n * sizeof(ITYPE)));
libxsmm_bgemm_handle* handle = 0;
unsigned long long start;
double duration;
handle = libxsmm_bgemm_handle_create(
LIBXSMM_GEMM_PRECISION(ITYPE), LIBXSMM_GEMM_PRECISION(ITYPE),
m, n, k, &bm, &bn, &bk, &b_m1, &b_n1, &b_k1, &b_k2,
&alpha, &beta, &gemm_flags, NULL/*auto-prefetch*/, &order);
if (0 != handle) {
LIBXSMM_MATINIT(ITYPE, 42, agold, m, k, lda, 1.0);
LIBXSMM_MATINIT(ITYPE, 24, bgold, k, n, ldb, 1.0);
LIBXSMM_MATINIT(ITYPE, 0, cgold, m, n, ldc, 1.0);
libxsmm_bgemm_copyin_a(handle, agold, &lda, a);
libxsmm_bgemm_copyin_b(handle, bgold, &ldb, b);
libxsmm_bgemm_copyin_c(handle, cgold, &ldc, c);
#if defined(MKL_ENABLE_AVX512)
mkl_enable_instructions(MKL_ENABLE_AVX512);
#endif
/* warm-up OpenMP (populate thread pool) */
libxsmm_bgemm_omp(handle, a, b, c, 1);
#if defined(CHECK)
if (!LIBXSMM_FEQ(0, check)) {
LIBXSMM_GEMM_SYMBOL(ITYPE)(&transa, &transb, &m, &n, &k, &alpha, agold, &lda, bgold, &ldb, &beta, cgold, &ldc);
}
#endif
if (!ab) {
libxsmm_gemm_print(stdout, LIBXSMM_GEMM_PRECISION(ITYPE),
&transa, &transb, &m, &n, &k, &alpha, a, &lda, b, &ldb, &beta, c, &ldc);
fprintf(stdout, "\n\n");
}
start = libxsmm_timer_tick();
libxsmm_bgemm_omp(handle, a, b, c, nrepeat);
duration = libxsmm_timer_duration(start, libxsmm_timer_tick());
if (0 < duration) {
if (ab) {
fprintf(stdout, "\tLIBXSMM: %.1f GFLOPS/s | %lli,%lli,%lli,%lli,%lli,%lli,%i,%lli,%lli,%lli,%lli\n",
gflops * nrepeat / duration, (long long)m, (long long)n, (long long)k, (long long)bm, (long long)bn, (long long)bk,
(int)order, (long long)b_m1, (long long)b_n1, (long long)b_k1, (long long)b_k2);
} else {
fprintf(stdout, "\tLIBXSMM: %.1f GFLOPS/s\n", gflops * nrepeat / duration);
}
}
#if defined(CHECK)
if (!LIBXSMM_FEQ(0, check)) { /* validate result against LAPACK/BLAS xGEMM */
ITYPE* ctest = 0;
int i;
start = libxsmm_timer_tick();
for (i = 0; i < nrepeat; ++i) {
LIBXSMM_GEMM_SYMBOL(ITYPE)(&transa, &transb, &m, &n, &k, &alpha, agold, &lda, bgold, &ldb, &beta, cgold, &ldc);
}
duration = libxsmm_timer_duration(start, libxsmm_timer_tick());
if (0 < duration) {
fprintf(stdout, "\tBLAS: %.1f GFLOPS/s\n", gflops * nrepeat / duration);
}
/* free memory not needed further; avoid double-free later on */
libxsmm_free(agold); agold = 0;
libxsmm_free(bgold); bgold = 0;
libxsmm_free(a); a = 0;
libxsmm_free(b); b = 0;
/* allocate C-matrix in regular format, and perform copy-out */
ctest = (ITYPE*)libxsmm_malloc((size_t)(ldc * n * sizeof(ITYPE)));
if (0 != ctest) {
libxsmm_matdiff_info diff;
libxsmm_bgemm_copyout_c(handle, c, &ldc, ctest);
if (EXIT_SUCCESS == libxsmm_matdiff(LIBXSMM_DATATYPE(ITYPE), m, n, cgold, ctest, &ldc, &ldc, &diff)) {
fprintf(stdout, "\tdiff: L2abs=%f Linf=%f\n", diff.l2_abs, diff.linf_abs);
if (check < 100.0 * diff.normf_rel) {
fprintf(stderr, "FAILED with an error of %f%%!\n", 100.0 * diff.normf_rel);
result = EXIT_FAILURE;
}
}
libxsmm_free(ctest);
}
}
#endif
libxsmm_bgemm_handle_destroy(handle);
}
else {
fprintf(stderr, "FAILED to create BGEMM-handle! For details retry with LIBXSMM_VERBOSE=1.\n");
result = EXIT_FAILURE;
}
libxsmm_free(agold);
libxsmm_free(bgold);
libxsmm_free(cgold);
libxsmm_free(a);
libxsmm_free(b);
libxsmm_free(c);
}
if(!ab) {
fprintf(stdout, "Finished\n");
}
return result;
}
int main(int argc, char* argv[])
{
const char t = (char)(1 < argc ? *argv[1] : 'o');
const libxsmm_blasint m = (2 < argc ? atoi(argv[2]) : 4096);
#if 0 /* TODO: enable when in-place transpose is fully supported */
const libxsmm_blasint n = (3 < argc ? atoi(argv[3]) : m);
#else
const libxsmm_blasint n = (3 < argc ? (('o' == t || 'O' == t) ? atoi(argv[3]) : m) : m);
#endif
const libxsmm_blasint ldi = LIBXSMM_MAX/*sanitize ld*/(4 < argc ? atoi(argv[4]) : 0, m);
const libxsmm_blasint ldo = LIBXSMM_MAX/*sanitize ld*/(5 < argc ? atoi(argv[5]) : 0, n);
const int r = (6 < argc ? atoi(argv[6]) : 0), s = LIBXSMM_ABS(r);
const libxsmm_blasint lower = (7 < argc ? atoi(argv[7]) : 0);
libxsmm_blasint km = m, kn = n, kldi = ldi, kldo = (('o' == t || 'O' == t) ? ldo : ldi);
int result = EXIT_SUCCESS, k;
if (0 == strchr("oOiI", t)) {
fprintf(stderr, "%s [<transpose-kind:o|i>] [<m>] [<n>] [<ld-in>] [<ld-out>] [random:0|nruns] [lbound]\n", argv[0]);
exit(EXIT_FAILURE);
}
#if defined(LIBXSMM_OFFLOAD_TARGET)
# pragma offload target(LIBXSMM_OFFLOAD_TARGET)
#endif
{
const char *const env_tasks = getenv("TASKS"), *const env_check = getenv("CHECK");
const int tasks = (0 == env_tasks || 0 == *env_tasks) ? 0/*default*/ : atoi(env_tasks);
const int check = (0 == env_check || 0 == *env_check) ? 1/*default*/ : atoi(env_check);
ELEM_TYPE *const a = (ELEM_TYPE*)libxsmm_malloc((size_t)(ldi * (('o' == t || 'O' == t) ? n : ldo) * sizeof(ELEM_TYPE)));
ELEM_TYPE *const b = (ELEM_TYPE*)libxsmm_malloc((size_t)(ldo * (('o' == t || 'O' == t) ? m : ldi) * sizeof(ELEM_TYPE)));
libxsmm_timer_tickint start, duration = 0;
#if defined(USE_REFERENCE) /* benchmark against a reference */
libxsmm_timer_tickint duration2 = 0;
#endif
libxsmm_blasint i;
size_t size = 0;
#if defined(MKL_ENABLE_AVX512)
mkl_enable_instructions(MKL_ENABLE_AVX512);
#endif
fprintf(stdout, "m=%lli n=%lli ldi=%lli ldo=%lli size=%.fMB (%s, %s)\n",
(long long)m, (long long)n, (long long)ldi, (long long)ldo,
1.0 * (m * n * sizeof(ELEM_TYPE)) / (1 << 20), LIBXSMM_STRINGIFY(ELEM_TYPE),
('o' == t || 'O' == t) ? "out-of-place" : "in-place");
#if defined(_OPENMP)
# pragma omp parallel for private(i)
#endif
for (i = 0; i < n; ++i) {
libxsmm_blasint j;
for (j = 0; j < m; ++j) {
a[i*ldi+j] = initial_value(i, j, m);
}
}
if (0 != check) { /* repeatable (reference) */
srand(RAND_SEED);
}
else { /* randomized selection */
srand(libxsmm_timer_tick() % ((unsigned int)-1));
}
for (k = (0 == r ? -1 : 0); k < s && EXIT_SUCCESS == result; ++k) {
if (0 < r) {
const libxsmm_blasint rldi = 0 <= lower ? randstart(lower, ldi) : 0;
km = randstart(LIBXSMM_ABS(lower), m);
kldi = LIBXSMM_MAX(rldi, km);
if (('o' == t || 'O' == t)) {
const libxsmm_blasint rldo = 0 <= lower ? randstart(lower, ldo) : 0;
kn = randstart(LIBXSMM_ABS(lower), n);
kldo = LIBXSMM_MAX(rldo, kn);
/* trigger JIT-generated code */
OTRANS(b, a, sizeof(ELEM_TYPE), km, kn, kldi, kldo);
}
else {
#if 0 /* TODO: enable when in-place transpose is fully supported */
kn = randstart(LIBXSMM_ABS(lower), n);
#else
kn = km;
#endif
kldo = kldi;
/* trigger JIT-generated code */
ITRANS(b, sizeof(ELEM_TYPE), km, kn, kldi);
}
}
size += (size_t)(km * kn * sizeof(ELEM_TYPE));
if (('o' == t || 'O' == t)) {
if (0 == tasks) { /* library-internal parallelization */
start = libxsmm_timer_tick();
#if defined(OTRANS_THREAD)
# pragma omp parallel
OTRANS_THREAD(b, a, sizeof(ELEM_TYPE), km, kn, kldi, kldo, omp_get_thread_num(), omp_get_num_threads());
#else
result = OTRANS(b, a, sizeof(ELEM_TYPE), km, kn, kldi, kldo);
#endif
duration += libxsmm_timer_diff(start, libxsmm_timer_tick());
}
else { /* external parallelization */
start = libxsmm_timer_tick();
#if defined(_OPENMP)
# pragma omp parallel
# pragma omp single nowait
#endif
result = OTRANS(b, a, sizeof(ELEM_TYPE), km, kn, kldi, kldo);
duration += libxsmm_timer_diff(start, libxsmm_timer_tick());
}
}
else {
assert(('i' == t || 'I' == t) && kldo == kldi);
memcpy(b, a, (size_t)(kldi * kn * sizeof(ELEM_TYPE)));
if (2 > tasks) { /* library-internal parallelization */
start = libxsmm_timer_tick();
result = ITRANS(b, sizeof(ELEM_TYPE), km, kn, kldi);
duration += libxsmm_timer_diff(start, libxsmm_timer_tick());
}
else { /* external parallelization */
start = libxsmm_timer_tick();
#if defined(_OPENMP)
# pragma omp parallel
# pragma omp single
#endif
result = ITRANS(b, sizeof(ELEM_TYPE), km, kn, kldi);
duration += libxsmm_timer_diff(start, libxsmm_timer_tick());
}
}
if (0 != check) { /* check */
for (i = 0; i < km; ++i) {
libxsmm_blasint j;
for (j = 0; j < kn; ++j) {
const ELEM_TYPE u = b[i*kldo+j];
const ELEM_TYPE v = a[j*kldi+i];
if (LIBXSMM_NEQ(u, v)) {
i += km; /* leave outer loop as well */
result = EXIT_FAILURE;
break;
}
}
}
}
}
#if defined(USE_REFERENCE)
if (0 < check) { /* check shall imply reference (performance-)test */
srand(RAND_SEED); /* reproduce the same sequence as above */
for (k = (0 == r ? -1 : 0); k < s && EXIT_SUCCESS == result; ++k) {
if (0 < r) {
const libxsmm_blasint rldi = 0 <= lower ? randstart(lower, ldi) : 0;
km = randstart(LIBXSMM_ABS(lower), m);
kldi = LIBXSMM_MAX(rldi, km);
if (('o' == t || 'O' == t)) {
const libxsmm_blasint rldo = 0 <= lower ? randstart(lower, ldo) : 0;
kn = randstart(LIBXSMM_ABS(lower), n);
kldo = LIBXSMM_MAX(rldo, kn);
}
else {
#if 0 /* TODO: enable when in-place transpose is fully supported */
kn = randstart(LIBXSMM_ABS(lower), n);
#else
kn = km;
#endif
kldo = kldi;
}
}
if (('o' == t || 'O' == t)) {
start = libxsmm_timer_tick();
OTRANS_GOLD(&km, &kn, a, &kldi, b, &kldo);
duration2 += libxsmm_timer_diff(start, libxsmm_timer_tick());
}
else {
assert(('i' == t || 'I' == t) && kldo == kldi);
memcpy(b, a, (size_t)(kldi * kn * sizeof(ELEM_TYPE)));
start = libxsmm_timer_tick();
ITRANS_GOLD(&km, &kn, b, &kldi, &kldo);
duration2 += libxsmm_timer_diff(start, libxsmm_timer_tick());
}
if (1 < check || 0 > check) { /* check */
for (i = 0; i < km; ++i) {
libxsmm_blasint j;
for (j = 0; j < kn; ++j) {
const ELEM_TYPE u = b[i*kldo+j];
const ELEM_TYPE v = a[j*kldi+i];
if (LIBXSMM_NEQ(u, v)) {
i += km; /* leave outer loop as well */
result = EXIT_FAILURE;
break;
}
}
}
}
}
}
#endif
if (EXIT_SUCCESS == result) {
const double d = libxsmm_timer_duration(0, duration);
if (0 < duration) {
/* out-of-place transpose bandwidth assumes RFO */
fprintf(stdout, "\tbandwidth: %.1f GB/s\n", size
* ((('o' == t || 'O' == t)) ? 3 : 2) / (d * (1 << 30)));
}
if (0 == lower) {
fprintf(stdout, "\tduration: %.0f ms\n", 1000.0 * (d / (0 == r ? (s + 1) : s)));
}
else {
fprintf(stdout, "\tduration: %f ms\n", 1000.0 * d);
}
#if defined(USE_REFERENCE)
if (0 < duration2) {
fprintf(stdout, "\treference: %.1fx\n", (1.0 * duration) / duration2);
}
#endif
}
else if (0 != check) { /* check */
fprintf(stderr, "Error: validation failed for m=%lli, n=%lli, ldi=%lli, and ldo=%lli!\n",
(long long)km, (long long)kn, (long long)kldi, (long long)kldo);
}
libxsmm_free(a);
libxsmm_free(b);
}
return result;
}