- smx_host_t host;
- smx_host_t *hosts;
- int host_count;
- int i;
- smpi_host_data_t hdata;
-
- SIMIX_mutex_lock(smpi_global->running_hosts_count_mutex);
- smpi_global->running_hosts_count++;
- SIMIX_mutex_unlock(smpi_global->running_hosts_count_mutex);
-
- // initialize some local variables
- host = SIMIX_host_self();
- hosts = SIMIX_host_get_table();
- host_count = SIMIX_host_get_number();
-
- hdata = xbt_new(s_smpi_host_data_t, 1);
-
- for (i = 0; i < host_count && host != hosts[i]; i ++);
-
- hdata->index = i;
- hdata->mutex = SIMIX_mutex_init();
- hdata->cond = SIMIX_cond_init();
-
- SIMIX_host_set_data(host, hdata);
-
- // node 0 sets the globals
- if (0 == i) {
-
- smpi_global->hosts = hosts;
- smpi_global->host_count = host_count;
-
- smpi_mpi_global = xbt_new(s_smpi_mpi_global_t, 1);
-
- // global communicator
- smpi_mpi_global->mpi_comm_world = xbt_new(s_smpi_mpi_communicator_t, 1);
- smpi_mpi_global->mpi_comm_world->size = host_count;
- smpi_mpi_global->mpi_comm_world->barrier_count = 0;
- smpi_mpi_global->mpi_comm_world->barrier_mutex = SIMIX_mutex_init();
- smpi_mpi_global->mpi_comm_world->barrier_cond = SIMIX_cond_init();
- smpi_mpi_global->mpi_comm_world->rank_to_index_map = xbt_new(int, host_count);
- smpi_mpi_global->mpi_comm_world->index_to_rank_map = xbt_new(int, host_count);
- for (i = 0; i < host_count; i++) {
- smpi_mpi_global->mpi_comm_world->rank_to_index_map[i] = i;
- smpi_mpi_global->mpi_comm_world->index_to_rank_map[i] = i;
- }
-
- // mpi datatypes
- smpi_mpi_global->mpi_byte = xbt_new(s_smpi_mpi_datatype_t, 1);
- smpi_mpi_global->mpi_byte->size = (size_t)1;
- smpi_mpi_global->mpi_int = xbt_new(s_smpi_mpi_datatype_t, 1);
- smpi_mpi_global->mpi_int->size = sizeof(int);
- smpi_mpi_global->mpi_double = xbt_new(s_smpi_mpi_datatype_t, 1);
- smpi_mpi_global->mpi_double->size = sizeof(double);
-
- // mpi operations
- smpi_mpi_global->mpi_land = xbt_new(s_smpi_mpi_op_t, 1);
- smpi_mpi_global->mpi_land->func = smpi_mpi_land_func;
- smpi_mpi_global->mpi_sum = xbt_new(s_smpi_mpi_op_t, 1);
- smpi_mpi_global->mpi_sum->func = smpi_mpi_sum_func;
-
- // signal all nodes to perform initialization
- SIMIX_mutex_lock(smpi_global->start_stop_mutex);
- smpi_global->root_ready = 1;
- SIMIX_cond_broadcast(smpi_global->start_stop_cond);
- SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
-
- } else {
-
- // make sure root is done before own initialization
- SIMIX_mutex_lock(smpi_global->start_stop_mutex);
- while (!smpi_global->root_ready) {
- SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
- }
- SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
-
- }
-
- // wait for all nodes to signal initializatin complete
- SIMIX_mutex_lock(smpi_global->start_stop_mutex);
- smpi_global->ready_process_count++;
- if (smpi_global->ready_process_count >= 3 * host_count) {
- SIMIX_cond_broadcast(smpi_global->start_stop_cond);
- }
- while (smpi_global->ready_process_count < 3 * host_count) {
- SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
- }
- SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
-
- return;
+ int i;
+ if ((*datatype == smpi_mpi_global->mpi_byte) || (*datatype == smpi_mpi_global->mpi_char)) {
+ char *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] < y[i] ? x[i] : y[i];
+ }
+ } else {
+ if (*datatype == smpi_mpi_global->mpi_int) {
+ int *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] < y[i] ? x[i] : y[i];
+ }
+ } else {
+ if (*datatype == smpi_mpi_global->mpi_float) {
+ float *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] < y[i] ? x[i] : y[i];
+ }
+ } else {
+ if (*datatype == smpi_mpi_global->mpi_double) {
+ double *x = a, *y = b;
+ for (i = 0; i < *length; i++) {
+ y[i] = x[i] < y[i] ? x[i] : y[i];
+ }
+
+ }
+ }
+ }
+ }