int main(int argc, char *argv[])
{
int e;
int f=3333;
static int g;
static int h=4444;
printf("program text (etext) %p\n", (void*)get_etext());
printf("initialized data (edata) %p\n", (void*)get_edata());
printf("uninitialized data (end) %p\n", (void*)get_end());
printf("&e=%p\n", &e);
printf("&f=%p\n", &f);
printf("&g=%p\n", &g);
printf("&h=%p\n", &h);
printf("This test is only for Apple Mac\n");
return 0;
}
static inline int
readonly_data_p(const char *p)
{
return (void*)get_etext() < p && p < (void*)get_edata();
}
void
shmem_internal_init(int tl_requested, int *tl_provided)
{
int ret;
int radix = -1, crossover = -1;
long heap_size, eager_size;
int heap_use_malloc = 0;
int runtime_initialized = 0;
int transport_initialized = 0;
#ifdef USE_XPMEM
int xpmem_initialized = 0;
#endif
#ifdef USE_CMA
int cma_initialized = 0;
#endif
ret = shmem_runtime_init();
if (0 != ret) {
fprintf(stderr, "ERROR: runtime init failed: %d\n", ret);
goto cleanup;
}
runtime_initialized = 1;
shmem_internal_my_pe = shmem_runtime_get_rank();
shmem_internal_num_pes = shmem_runtime_get_size();
/* Ensure that the vendor string will not cause an overflow in user code */
if (sizeof(SHMEM_VENDOR_STRING) > SHMEM_MAX_NAME_LEN) {
fprintf(stderr,
"[%03d] ERROR: SHMEM_VENDOR_STRING length (%zu) exceeds SHMEM_MAX_NAME_LEN (%d)\n",
shmem_internal_my_pe, sizeof(SHMEM_VENDOR_STRING), SHMEM_MAX_NAME_LEN);
goto cleanup;
}
/* Process environment variables */
radix = shmem_util_getenv_long("COLL_RADIX", 0, 4);
crossover = shmem_util_getenv_long("COLL_CROSSOVER", 0, 4);
heap_size = shmem_util_getenv_long("SYMMETRIC_SIZE", 1, 512 * 1024 * 1024);
eager_size = shmem_util_getenv_long("BOUNCE_SIZE", 1, 2048);
heap_use_malloc = shmem_util_getenv_long("SYMMETRIC_HEAP_USE_MALLOC", 0, 0);
shmem_internal_debug = (NULL != shmem_util_getenv_str("DEBUG")) ? 1 : 0;
/* huge page support only on Linux for now, default is to use 2MB large pages */
#ifdef __linux__
if (heap_use_malloc == 0) {
shmem_internal_heap_use_huge_pages=
(shmem_util_getenv_str("SYMMETRIC_HEAP_USE_HUGE_PAGES") != NULL) ? 1 : 0;
shmem_internal_heap_huge_page_size = shmem_util_getenv_long("SYMMETRIC_HEAP_PAGE_SIZE",
1,
2 * 1024 * 1024);
}
#endif
/* Find symmetric data */
#ifdef __APPLE__
shmem_internal_data_base = (void*) get_etext();
shmem_internal_data_length = get_end() - get_etext();
#else
shmem_internal_data_base = &data_start;
shmem_internal_data_length = (unsigned long) &end - (unsigned long) &data_start;
#endif
#ifdef USE_ON_NODE_COMMS
shmem_internal_location_array = malloc(sizeof(char) * shmem_internal_num_pes);
if (NULL == shmem_internal_location_array) goto cleanup;
memset(shmem_internal_location_array, -1, shmem_internal_num_pes);
#endif
/* create symmetric heap */
ret = shmem_internal_symmetric_init(heap_size, heap_use_malloc);
if (0 != ret) {
fprintf(stderr,
"[%03d] ERROR: symmetric heap initialization failed: %d\n",
shmem_internal_my_pe, ret);
goto cleanup;
}
/* Initialize transport devices */
ret = shmem_transport_init(eager_size);
if (0 != ret) {
fprintf(stderr,
"[%03d] ERROR: Transport init failed\n",
shmem_internal_my_pe);
goto cleanup;
}
transport_initialized = 1;
#ifdef USE_XPMEM
ret = shmem_transport_xpmem_init(eager_size);
if (0 != ret) {
fprintf(stderr,
"[%03d] ERROR: XPMEM init failed\n",
shmem_internal_my_pe);
goto cleanup;
}
xpmem_initialized = 1;
#endif
#ifdef USE_CMA
shmem_transport_cma_put_max = shmem_util_getenv_long("CMA_PUT_MAX", 1, 8*1024);
shmem_transport_cma_get_max = shmem_util_getenv_long("CMA_GET_MAX", 1, 16*1024);
ret = shmem_transport_cma_init(eager_size);
if (0 != ret) {
fprintf(stderr,
"[%03d] ERROR: CMA init failed\n",
shmem_internal_my_pe);
goto cleanup;
}
cma_initialized = 1;
#endif
/* exchange information */
ret = shmem_runtime_exchange();
if (0 != ret) {
fprintf(stderr, "[%03d] ERROR: runtime exchange failed: %d\n",
shmem_internal_my_pe, ret);
goto cleanup;
}
/* finish transport initialization after information sharing. */
ret = shmem_transport_startup();
if (0 != ret) {
fprintf(stderr,
"[%03d] ERROR: Transport startup failed\n",
shmem_internal_my_pe);
goto cleanup;
}
#ifdef USE_XPMEM
ret = shmem_transport_xpmem_startup();
if (0 != ret) {
fprintf(stderr,
"[%03d] ERROR: XPMEM startup failed\n",
shmem_internal_my_pe);
goto cleanup;
}
#endif
#ifdef USE_CMA
ret = shmem_transport_cma_startup();
if (0 != ret) {
fprintf(stderr,
"[%03d] ERROR: CMA startup failed\n",
shmem_internal_my_pe);
goto cleanup;
}
#endif
ret = shmem_internal_collectives_init(crossover, radix);
if (ret != 0) {
fprintf(stderr,
"[%03d] ERROR: initialization of collectives failed: %d\n",
shmem_internal_my_pe, ret);
goto cleanup;
}
atexit(shmem_internal_shutdown_atexit);
shmem_internal_initialized = 1;
/* set up threading */
SHMEM_MUTEX_INIT(shmem_internal_mutex_alloc);
#ifdef ENABLE_THREADS
shmem_internal_thread_level = tl_requested;
*tl_provided = tl_requested;
#else
shmem_internal_thread_level = SHMEMX_THREAD_SINGLE;
*tl_provided = SHMEMX_THREAD_SINGLE;
#endif
/* get hostname for shmem_getnodename */
if (gethostname(shmem_internal_my_hostname,
sizeof(shmem_internal_my_hostname))) {
snprintf(shmem_internal_my_hostname,
sizeof(shmem_internal_my_hostname),
"ERR: gethostname '%s'?", strerror(errno));
}
/* last minute printing of information */
if (0 == shmem_internal_my_pe) {
if (NULL != shmem_util_getenv_str("VERSION")) {
printf(PACKAGE_STRING "\n");
fflush(NULL);
}
if (NULL != shmem_util_getenv_str("INFO")) {
printf(PACKAGE_STRING "\n\n");
printf("SMA_VERSION %s\n",
(NULL != shmem_util_getenv_str("VERSION")) ? "Set" : "Not set");
printf("\tIf set, print library version at startup\n");
printf("SMA_INFO %s\n",
(NULL != shmem_util_getenv_str("INFO")) ? "Set" : "Not set");
printf("\tIf set, print this help message at startup\n");
printf("SMA_SYMMETRIC_SIZE %ld\n", heap_size);
printf("\tSymmetric heap size\n");
printf("SMA_SYMMETRIC_HEAP_USE_MALLOC %s\n",
(0 != heap_use_malloc) ? "Set" : "Not set");
printf("\tIf set, allocate the symmetric heap using malloc\n");
if (heap_use_malloc == 0) {
printf("SMA_SYMMETRIC_HEAP_USE_HUGE_PAGES %s\n",
shmem_internal_heap_use_huge_pages ? "Yes" : "No");
if (shmem_internal_heap_use_huge_pages) {
printf("SMA_SYMMETRIC_HEAP_PAGE_SIZE %ld \n",
shmem_internal_heap_huge_page_size);
}
printf("\tSymmetric heap use large pages\n");
}
printf("SMA_COLL_CROSSOVER %d\n", crossover);
printf("\tCross-over between linear and tree collectives\n");
printf("SMA_COLL_RADIX %d\n", radix);
printf("\tRadix for tree-based collectives\n");
printf("SMA_BOUNCE_SIZE %ld\n", eager_size);
printf("\tMaximum message size to bounce buffer\n");
printf("SMA_BARRIER_ALGORITHM %s\n", coll_type_str[shmem_internal_barrier_type]);
printf("\tAlgorithm for barrier. Options are auto, linear, tree, dissem\n");
printf("SMA_BCAST_ALGORITHM %s\n", coll_type_str[shmem_internal_bcast_type]);
printf("\tAlgorithm for broadcast. Options are auto, linear, tree\n");
printf("SMA_REDUCE_ALGORITHM %s\n", coll_type_str[shmem_internal_reduce_type]);
printf("\tAlgorithm for reductions. Options are auto, linear, tree, recdbl\n");
printf("SMA_COLLECT_ALGORITHM %s\n", coll_type_str[shmem_internal_collect_type]);
printf("\tAlgorithm for collect. Options are auto, linear\n");
printf("SMA_FCOLLECT_ALGORITHM %s\n", coll_type_str[shmem_internal_fcollect_type]);
printf("\tAlgorithm for fcollect. Options are auto, linear, ring, recdbl\n");
#ifdef USE_CMA
printf("SMA_CMA_PUT_MAX %zu\n", shmem_transport_cma_put_max);
printf("SMA_CMA_GET_MAX %zu\n", shmem_transport_cma_get_max);
#endif /* USE_CMA */
printf("SMA_DEBUG %s\n", (NULL != shmem_util_getenv_str("DEBUG")) ? "On" : "Off");
printf("\tEnable debugging messages.\n");
shmem_transport_print_info();
printf("\n");
fflush(NULL);
}
}
/* finish up */
shmem_runtime_barrier();
return;
cleanup:
if (transport_initialized) {
shmem_transport_fini();
}
#ifdef USE_XPMEM
if (xpmem_initialized) {
shmem_transport_xpmem_fini();
}
#endif
#ifdef USE_CMA
if (cma_initialized) {
shmem_transport_cma_fini();
}
#endif
if (NULL != shmem_internal_data_base) {
shmem_internal_symmetric_fini();
}
if (runtime_initialized) {
shmem_runtime_fini();
}
abort();
}