/*
* _set_collectors call the split_hostlist API on the all nodes hostlist
* to set the node to be used as a collector for unsolicited node aggregation.
*
* If this node is a forwarding node (first node in any hostlist),
* then its collector and backup are the ControlMachine and it's backup.
*
* Otherwise, we find the hostlist containing this node.
* The forwarding node in that hostlist becomes a collector, the next node
* which is not this node becomes the backup.
* That list is split, we iterate through it and searching for a list in
* which this node is a forwarding node. If found, we set the collector and
* backup, else this process is repeated.
*/
static void _set_collectors(char *this_node_name)
{
slurm_ctl_conf_t *conf;
hostlist_t nodes;
hostlist_t* hll = NULL;
char *parent = NULL, *backup = NULL;
char addrbuf[32];
int i, j, f = -1;
int hl_count = 0;
uint16_t parent_port;
uint16_t backup_port;
bool found = false;
bool ctldparent = true;
#ifdef HAVE_FRONT_END
return; /* on a FrontEnd system this would never be useful. */
#endif
if (!run_in_daemon("slurmd"))
return; /* Only compute nodes have collectors */
/* Set the initial iteration, collector is controller,
* full list is split */
xassert(this_node_name);
conf = slurm_conf_lock();
nodes = _get_all_nodes();
parent = strdup(conf->control_addr);
if (conf->backup_addr) {
backup = strdup(conf->backup_addr);
}
parent_port = conf->slurmctld_port;
backup_port = parent_port;
slurm_conf_unlock();
while (!found) {
if ( route_g_split_hostlist(nodes, &hll, &hl_count) ) {
error("unable to split forward hostlist");
goto clean; /* collector addrs remains null */
}
/* Find which hostlist contains this node */
for (i=0; i < hl_count; i++) {
f = hostlist_find(hll[i], this_node_name);
if (f != -1)
break;
}
if (i == hl_count) {
fatal("ROUTE -- %s not found in node_record_table",
this_node_name);
}
if (f == 0) {
/* we are a forwarded to node,
* so our parent is parent */
if (hostlist_count(hll[i]) > 1)
this_is_collector = true;
xfree(msg_collect_node);
msg_collect_node = xmalloc(sizeof(slurm_addr_t));
if (ctldparent)
slurm_set_addr(msg_collect_node, parent_port,
parent);
else {
slurm_conf_get_addr(parent, msg_collect_node);
msg_collect_node->sin_port = htons(parent_port);
}
if (debug_flags & DEBUG_FLAG_ROUTE) {
slurm_print_slurm_addr(msg_collect_node,
addrbuf, 32);
info("ROUTE -- message collector address is %s",
addrbuf);
}
xfree(msg_collect_backup);
if (backup) {
msg_collect_backup =
xmalloc(sizeof(slurm_addr_t));
if (ctldparent) {
slurm_set_addr(msg_collect_backup,
backup_port, backup);
} else {
slurm_conf_get_addr(backup,
msg_collect_backup);
msg_collect_backup->sin_port =
htons(backup_port);
}
if (debug_flags & DEBUG_FLAG_ROUTE) {
slurm_print_slurm_addr(
msg_collect_backup,
addrbuf, 32);
info("ROUTE -- message collector backup"
" address is %s", addrbuf);
}
} else {
if (debug_flags & DEBUG_FLAG_ROUTE) {
info("ROUTE -- no message collector "
"backup");
}
}
found = true;
goto clean;
}
/* We are not a forwarding node, the first node in this list
* will split the forward_list.
* We also know that the forwarding node is not a controller.
*
* clean up parent context */
ctldparent = false;
hostlist_destroy(nodes);
if (parent)
free(parent);
if (backup)
free(backup);
nodes = hostlist_copy(hll[i]);
for (j=0; j < hl_count; j++) {
hostlist_destroy(hll[j]);
}
xfree(hll);
/* set our parent, backup, and continue search */
parent = hostlist_shift(nodes);
backup = hostlist_nth(nodes, 0);
if (strcmp(backup, this_node_name) == 0) {
free(backup);
backup = NULL;
if (hostlist_count(nodes) > 1)
backup = hostlist_nth(nodes, 1);
}
parent_port = slurm_conf_get_port(parent);
if (backup) {
backup_port = slurm_conf_get_port(backup);
} else
backup_port = 0;
}
clean:
if (debug_flags & DEBUG_FLAG_ROUTE) {
if (this_is_collector)
info("ROUTE -- %s is a collector node", this_node_name);
else
info("ROUTE -- %s is a leaf node", this_node_name);
}
hostlist_destroy(nodes);
if (parent)
free(parent);
if (backup)
free(backup);
for (i=0; i < hl_count; i++) {
hostlist_destroy(hll[i]);
}
xfree(hll);
}
/*
* Read the slurm configuration file (slurm.conf) and substitute some
* values into the slurmd configuration in preference of the defaults.
*/
static void
_read_config(void)
{
char *path_pubkey = NULL;
slurm_ctl_conf_t *cf = NULL;
uint16_t tmp16 = 0;
#ifndef HAVE_FRONT_END
bool cr_flag = false, gang_flag = false;
#endif
cf = slurm_conf_lock();
slurm_mutex_lock(&conf->config_mutex);
if (conf->conffile == NULL)
conf->conffile = xstrdup(cf->slurm_conf);
conf->slurm_user_id = cf->slurm_user_id;
conf->cr_type = cf->select_type_param;
path_pubkey = xstrdup(cf->job_credential_public_certificate);
if (!conf->logfile)
conf->logfile = xstrdup(cf->slurmd_logfile);
#ifndef HAVE_FRONT_END
if (!strcmp(cf->select_type, "select/cons_res"))
cr_flag = true;
if (cf->preempt_mode & PREEMPT_MODE_GANG)
gang_flag = true;
#endif
slurm_conf_unlock();
/* node_name may already be set from a command line parameter */
if (conf->node_name == NULL)
conf->node_name = slurm_conf_get_nodename(conf->hostname);
/* if we didn't match the form of the hostname already
* stored in conf->hostname, check to see if we match any
* valid aliases */
if (conf->node_name == NULL)
conf->node_name = slurm_conf_get_aliased_nodename();
if (conf->node_name == NULL)
conf->node_name = slurm_conf_get_nodename("localhost");
if (conf->node_name == NULL)
fatal("Unable to determine this slurmd's NodeName");
_massage_pathname(&conf->logfile);
/* set node_addr if relevant */
if ((conf->node_addr == NULL) &&
(conf->node_addr = slurm_conf_get_nodeaddr(conf->hostname)) &&
(strcmp(conf->node_addr, conf->hostname) == 0)) {
xfree(conf->node_addr); /* Sets to NULL */
}
conf->port = slurm_conf_get_port(conf->node_name);
slurm_conf_get_cpus_bsct(conf->node_name,
&conf->conf_cpus, &conf->conf_boards,
&conf->conf_sockets, &conf->conf_cores,
&conf->conf_threads);
/* store hardware properties in slurmd_config */
xfree(conf->block_map);
xfree(conf->block_map_inv);
_update_logging();
_update_nice();
get_cpuinfo(&conf->actual_cpus,
&conf->actual_boards,
&conf->actual_sockets,
&conf->actual_cores,
&conf->actual_threads,
&conf->block_map_size,
&conf->block_map, &conf->block_map_inv);
#ifdef HAVE_FRONT_END
/*
* When running with multiple frontends, the slurmd S:C:T values are not
* relevant, hence ignored by both _register_front_ends (sets all to 1)
* and validate_nodes_via_front_end (uses slurm.conf values).
* Report actual hardware configuration, irrespective of FastSchedule.
*/
conf->cpus = conf->actual_cpus;
conf->boards = conf->actual_boards;
conf->sockets = conf->actual_sockets;
conf->cores = conf->actual_cores;
conf->threads = conf->actual_threads;
#else
/* If the actual resources on a node differ than what is in
* the configuration file and we are using
* cons_res or gang scheduling we have to use what is in the
* configuration file because the slurmctld creates bitmaps
* for scheduling before these nodes check in.
*/
if (((cf->fast_schedule == 0) && !cr_flag && !gang_flag) ||
((cf->fast_schedule == 1) &&
(conf->actual_cpus < conf->conf_cpus))) {
conf->cpus = conf->actual_cpus;
conf->boards = conf->actual_boards;
conf->sockets = conf->actual_sockets;
conf->cores = conf->actual_cores;
conf->threads = conf->actual_threads;
} else {
conf->cpus = conf->conf_cpus;
conf->boards = conf->conf_boards;
conf->sockets = conf->conf_sockets;
conf->cores = conf->conf_cores;
conf->threads = conf->conf_threads;
}
if ((conf->cpus != conf->actual_cpus) ||
(conf->sockets != conf->actual_sockets) ||
(conf->cores != conf->actual_cores) ||
(conf->threads != conf->actual_threads)) {
if (cf->fast_schedule) {
info("Node configuration differs from hardware: "
"CPUs=%u:%u(hw) Boards=%u:%u(hw) "
"SocketsPerBoard=%u:%u(hw) CoresPerSocket=%u:%u(hw) "
"ThreadsPerCore=%u:%u(hw)",
conf->cpus, conf->actual_cpus,
conf->boards, conf->actual_boards,
conf->sockets, conf->actual_sockets,
conf->cores, conf->actual_cores,
conf->threads, conf->actual_threads);
} else if ((cf->fast_schedule == 0) && (cr_flag || gang_flag)) {
error("You are using cons_res or gang scheduling with "
"Fastschedule=0 and node configuration differs "
"from hardware. The node configuration used "
"will be what is in the slurm.conf because of "
"the bitmaps the slurmctld must create before "
"the slurmd registers.\n"
" CPUs=%u:%u(hw) Boards=%u:%u(hw) "
"SocketsPerBoard=%u:%u(hw) CoresPerSocket=%u:%u(hw) "
"ThreadsPerCore=%u:%u(hw)",
conf->cpus, conf->actual_cpus,
conf->boards, conf->actual_boards,
conf->sockets, conf->actual_sockets,
conf->cores, conf->actual_cores,
conf->threads, conf->actual_threads);
}
}
#endif
get_memory(&conf->real_memory_size);
get_up_time(&conf->up_time);
cf = slurm_conf_lock();
get_tmp_disk(&conf->tmp_disk_space, cf->tmp_fs);
_free_and_set(&conf->epilog, xstrdup(cf->epilog));
_free_and_set(&conf->prolog, xstrdup(cf->prolog));
_free_and_set(&conf->tmpfs, xstrdup(cf->tmp_fs));
_free_and_set(&conf->health_check_program,
xstrdup(cf->health_check_program));
_free_and_set(&conf->spooldir, xstrdup(cf->slurmd_spooldir));
_massage_pathname(&conf->spooldir);
_free_and_set(&conf->pidfile, xstrdup(cf->slurmd_pidfile));
_massage_pathname(&conf->pidfile);
_free_and_set(&conf->select_type, xstrdup(cf->select_type));
_free_and_set(&conf->task_prolog, xstrdup(cf->task_prolog));
_free_and_set(&conf->task_epilog, xstrdup(cf->task_epilog));
_free_and_set(&conf->pubkey, path_pubkey);
conf->debug_flags = cf->debug_flags;
conf->propagate_prio = cf->propagate_prio_process;
_free_and_set(&conf->job_acct_gather_freq,
xstrdup(cf->job_acct_gather_freq));
conf->acct_freq_task = (uint16_t)NO_VAL;
tmp16 = acct_gather_parse_freq(PROFILE_TASK,
conf->job_acct_gather_freq);
if (tmp16 != -1)
conf->acct_freq_task = tmp16;
_free_and_set(&conf->acct_gather_energy_type,
xstrdup(cf->acct_gather_energy_type));
_free_and_set(&conf->acct_gather_filesystem_type,
xstrdup(cf->acct_gather_filesystem_type));
_free_and_set(&conf->acct_gather_infiniband_type,
xstrdup(cf->acct_gather_infiniband_type));
_free_and_set(&conf->acct_gather_profile_type,
xstrdup(cf->acct_gather_profile_type));
_free_and_set(&conf->job_acct_gather_type,
xstrdup(cf->job_acct_gather_type));
if ( (conf->node_name == NULL) ||
(conf->node_name[0] == '\0') )
fatal("Node name lookup failure");
if (cf->control_addr == NULL)
fatal("Unable to establish controller machine");
if (cf->slurmctld_port == 0)
fatal("Unable to establish controller port");
conf->slurmd_timeout = cf->slurmd_timeout;
conf->use_pam = cf->use_pam;
conf->task_plugin_param = cf->task_plugin_param;
slurm_mutex_unlock(&conf->config_mutex);
slurm_conf_unlock();
}
