static struct ompi_proc_t *ompi_group_dense_lookup_raw (ompi_group_t *group, const int peer_id)
{
if (OPAL_UNLIKELY(ompi_proc_is_sentinel (group->grp_proc_pointers[peer_id]))) {
ompi_proc_t *proc =
(ompi_proc_t *) ompi_proc_lookup (ompi_proc_sentinel_to_name ((intptr_t) group->grp_proc_pointers[peer_id]));
if (NULL != proc) {
/* replace sentinel value with an actual ompi_proc_t */
group->grp_proc_pointers[peer_id] = proc;
/* retain the proc */
OBJ_RETAIN(group->grp_proc_pointers[peer_id]);
}
}
return group->grp_proc_pointers[peer_id];
}
/**
* This PML monitors only the processes in the MPI_COMM_WORLD. As OMPI is now lazily
* adding peers on the first call to add_procs we need to check how many processes
* are in the MPI_COMM_WORLD to create the storage with the right size.
*/
int mca_pml_monitoring_add_procs(struct ompi_proc_t **procs,
size_t nprocs)
{
opal_process_name_t tmp, wp_name;
size_t i, peer_rank, nprocs_world;
uint64_t key;
if(NULL == translation_ht) {
translation_ht = OBJ_NEW(opal_hash_table_t);
opal_hash_table_init(translation_ht, 2048);
/* get my rank in the MPI_COMM_WORLD */
my_rank = ompi_comm_rank((ompi_communicator_t*)&ompi_mpi_comm_world);
}
nprocs_world = ompi_comm_size((ompi_communicator_t*)&ompi_mpi_comm_world);
/* For all procs in the same MPI_COMM_WORLD we need to add them to the hash table */
for( i = 0; i < nprocs; i++ ) {
/* Extract the peer procname from the procs array */
if( ompi_proc_is_sentinel(procs[i]) ) {
tmp = ompi_proc_sentinel_to_name((uintptr_t)procs[i]);
} else {
tmp = procs[i]->super.proc_name;
}
if( tmp.jobid != ompi_proc_local_proc->super.proc_name.jobid )
continue;
for( peer_rank = 0; peer_rank < nprocs_world; peer_rank++ ) {
wp_name = ompi_group_get_proc_name(((ompi_communicator_t*)&ompi_mpi_comm_world)->c_remote_group, peer_rank);
if( 0 != opal_compare_proc( tmp, wp_name) )
continue;
/* Find the rank of the peer in MPI_COMM_WORLD */
key = *((uint64_t*)&tmp);
/* store the rank (in COMM_WORLD) of the process
with its name (a uniq opal ID) as key in the hash table*/
if( OPAL_SUCCESS != opal_hash_table_set_value_uint64(translation_ht,
key, (void*)(uintptr_t)peer_rank) ) {
return OMPI_ERR_OUT_OF_RESOURCE; /* failed to allocate memory or growing the hash table */
}
break;
}
}
return pml_selected_module.pml_add_procs(procs, nprocs);
}
int mca_pml_monitoring_add_procs(struct ompi_proc_t **procs,
size_t nprocs)
{
/**
* Create the monitoring hashtable only for my MPI_COMM_WORLD. We choose
* to ignore by now all other processes.
*/
if(NULL == translation_ht) {
size_t i;
uint64_t key;
opal_process_name_t tmp;
nbprocs = nprocs;
translation_ht = OBJ_NEW(opal_hash_table_t);
opal_hash_table_init(translation_ht, 2048);
for( i = 0; i < nprocs; i++ ) {
/* rank : ompi_proc_local_proc in procs */
if( procs[i] == ompi_proc_local_proc)
my_rank = i;
/* Extract the peer procname from the procs array */
if( ompi_proc_is_sentinel(procs[i]) ) {
tmp = ompi_proc_sentinel_to_name((uintptr_t)procs[i]);
} else {
tmp = procs[i]->super.proc_name;
}
key = *((uint64_t*)&tmp);
/* store the rank (in COMM_WORLD) of the process
with its name (a uniq opal ID) as key in the hash table*/
if( OPAL_SUCCESS != opal_hash_table_set_value_uint64(translation_ht,
key, (void*)(uintptr_t)i) ) {
return OMPI_ERR_OUT_OF_RESOURCE; /* failed to allocate memory or growing the hash table */
}
}
}
return pml_selected_module.pml_add_procs(procs, nprocs);
}