Ubuntu Manpage: pbs_server_attributes

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NAME

       pbs_server_attributes - pbs server attributes

DESCRIPTION

Server attributes can be read by any client; privilege is not required. Most server attributes are
alterable by a privileged client, run by a user with administrator or operator privilege. Certain
attributes require the user to have full administrator privilege. The following is a list of the server
attributes.

acl_group_sloppy
This is a default value for the queue attribute of the same name. Format: boolean, "TRUE",
"True", "true", "Y", "y", "1", "FALSE", "False", "false", "N", "n", "0"; default value: false =
disabled.

acl_host_enable
Attribute which when true directs the server to use the acl_hosts access control lists.
Requires full manager privilege to set or alter. Format: boolean, "TRUE", "True", "true", "Y",
"y", "1", "FALSE", "False", "false", "N", "n", "0"; default value: false = disabled.

acl_hosts
List of hosts which may request services from this server. This list contains the network name
of the hosts. Local requests, i.e. from the server's host itself, are aways accepted even if
the host is not included in the list. See section 10.1, Authorization, in the PBS External
Reference Specification. Requires full manager privilege to set or alter. Format:
"[+|-]hostname.domain[,...]"; default value: all hosts.

acl_logic_or
This is a default value for the queue attribute of the same name. Format: boolean, "TRUE",
"True", "true", "Y", "y", "1", "FALSE", "False", "false", "N", "n", "0"; default value: false =
disabled.

acl_user_enable
Attribute which when true directs the server to use the server level acl_users access list.
Requires full manager privilege to set or alter. Format: boolean (see acl_group_enable);
default value: disabled.

acl_users
List of users allowed or denied the ability to make any requests of this server. See section
10.1, Authorization, in the PBS External Reference Specification. If acl_user_enable is set to
true, only users listed in acl_users may submit to or execute jobs in the queue. Requires full
manager privilege to set or alter. Format: "[+|-]user[@host][,...]"; default value: all users
allowed.

acl_roots
List of super users who may submit to and execute jobs at this server. If the job execution id
would be zero (0), then the job owner, root@host, must be listed in this access control list or
the job is rejected. Format: "[+|-]user[@host][,...]"; default value: no root jobs allowed.

allow_node_submit
Allow job submissions from compute nodes regardless of ruserok(). Requires full manager
privilege to set or alter. Format: boolean; default value: disabled.

auto_node_np
Automatically configure a node's np value based on the ncpus value from the status update.
Requires full manager privilege to set or alter. Format: boolean; default value: disabled.

comment
A text string which may be set by the scheduler or other privileged client to provide
information to the batch system users. Format: any string; default value: none.

default_node
A node specification to use if there is no other supplied specification. This attribute is only
used by servers where a nodes file exist in the server_priv directory providing a list of nodes
to the server. If the nodes file does not exist, this attribute is not set by default and is
ignored if set. The default value allows for jobs to share a single node. Format: a node
specification string; default value: 1#shared.

default_queue
The queue which is the target queue when a request does not specify a queue name. Format: a
queue name; default value: none, must be set to an existing queue.

down_on_error
Set a node's state to "down" if MOM reports a message beginning with the string "ERROR". This
might interfere with moab's node error handling. See the HEALTH CHECK section in pbs_mom(8B).
This is an EXPERIMENTAL feature and may be removed in the future. Format: boolean; default
value: false.

extra_resc
Add additional string-type job resources. They have no effect within TORQUE and are only
advisible to the scheduler. They can not be used for resources_default/min/max. Format: list;
default value: none.

job_nanny
Enables the "job deletion nanny" feature. All job cancels will create a repeating task that
will resend KILL signals if the initial job cancel failed. Further job cancels will be rejected
with the message "job cancel in progress." This is useful for temporary failures with a job's
execution node during a job delete request. It is possible that the job nanny might interfere
with job restarts, migrations, and checkpointing. Format: boolean; default value: false.

job_start_timeout
Specifies the pbs_server to pbs_mom TCP socket timeout in seconds that is used when the
pbs_server sends a job start to the pbs_mom. It is useful when the mom has extra overhead
involved in starting jobs. If not specified then the tcp_timeout value is used.

job_stat_rate
Moderates how often job stat requests will be issued from pbs_server to the MOM daemons. If
poll_jobs is unset or false, then all jobs that haven't been updated in job_stat_rate seconds
will trigger a stat request. If poll_jobs is true, then all jobs will be updated every
job_stat_rate.
(see poll_jobs) On active clusters, 60 or 120 might be reasonable. Default value: 45 seconds
(PBS_RESTAT_JOB in server_limits.h) Minimum value: 4 seconds (PBS_JOBSTAT_MIN in
server_limits.h)

keep_completed
Number of seconds to retain completed jobs in the C state. This is overridden by the execution
queue attribute of the same name. Format: integer; default value: 0.

kill_delay
The amount of the time delay between the sending of SIGTERM and SIGKILL when a qdel command is
issued against a running job. This is overridden by the execution queue attribute of the same
name. Format: integer seconds; default value: 2 seconds.

log_events
A bit string which specifies the type of events which are logged, see the section on Event
Logging in chapter 3 of the ERS. Format: integer; default value: 511, all events.

log_file_max_size
If this is set to a value > 0 then pbs_server will roll the current log file to logfile.1 when
its size is greater than or equal to the value of log_file_max_size. This value is interpreted
as kilobytes.

log_file_roll_depth
If this is set to a value >=1 and log_file_max_size is set then pbs_server will continue rolling
the log files to logfile.log_file_roll_depth.

log_level
Controls the verbosity of server logs. This value ranges from 0 to 7 with 7 representing
maximum verbosity. Format: integer; default value: 0, minimum verbosity.

mail_body_fmt
Override the default format for the body of outgoing mail messages. A number of printf-like
format specifiers and escape sequences can be used:

\n new line

\t horizontal tab

\\ backslash

\' single quote

\" double quote

%d details concerning the message

%h PBS host name

%i PBS job identifier

%j PBS job name

%m long reason for message

%r short reason for message

%% a single %

Format: a printf-like format string; Default value: "PBS Job Id: %i\nJob Name: %j\nExec host:
%h\n%m\n%d\n".

mail_domain
Override the default domain for outgoing mail messages. If set, emails will be addressed to
"euser@mail_domain". If unset, the job's Job_Owner attribute will be used. Format: a domain
name; Default value: none.

mail_subject_fmt
Override the default format for the subject of outgoing mail messages. A number of printf-like
format specifiers and escape sequences can be used:

\n new line

\t horizontal tab

\\ backslash

\' single quote

\" double quote

%d details concerning the message

%h PBS host name

%i PBS job identifier

%j PBS job name

%m long reason for message

%r short reason for message

%% a single %

Format: a printf-like format string; Default value: "PBS JOB %i".

mail_uid
The uid from which server generated mail is sent to users. Format: integer uid; default value:
0 for root.

managers
List of users granted batch administrator privileges. Format:
user@host.sub.domain[,user@host.sub.domain...]. The host, sub-domain, or domain name may be
wild carded by the use of an * character, see the description of user access control lists in
chapter 10.1.1 of the ERS. Requires full manager privilege to set or alter. Default value:
root on the local host.

max_running
The maximum number of jobs allowed to be selected for execution at any given time. Advisory to
the Scheduler, not enforced by the server. Format: integer.

max_user_run
The maximum number of jobs owned by a single user that are allowed to be running from this queue
at one time. This attribute is advisory to the Scheduler, it is not enforced by the server.
Format: integer; default value: none.

max_group_run
The maximum number of jobs owned by any users in a single group that are allowed to be running
from this queue at one time. This attribute is advisory to the Scheduler, it is not enforced by
the server. Format: integer; default value: none.

mom_job_sync
Enables the "job sync on MOM" feature. When MOMs send a status update, and it includes a list
of jobs, server will issue job deletes for any jobs that don't actually exist. Format: boolean;
default value: true.

next_job_number
This hidden attribute is used to allow a manager to set the value of the next job ID via qmgr.
This attribute should rarely be modified. Some sites may find it useful if they need to recreate
their pbs_server database (perhaps due to a format change between major TORQUE versions) and
they keep a database of job information indexed by the job ID. The manager should be careful to
avoid setting the value to something that would allow the next job number to conflict with a job
already queued, however Torque will handle this in a sane manner: the job submission will be
rejected and the next job number will be incremented.

net_counter
Lists the 3 numbers representing the number of connections in the last 5 seconds, 30 seconds,
and 60 seconds. This is a read-only attribute. Format: string; default value: none.

node_check_rate
In OpenPBS, this was the rate at which pbs_server would poll each node. In TORQUE, nodes
periodically send updates without solicitation from pbs_server; this attribute is now used as
the maximum number of seconds allowed without an update before pbs_server will consider the node
down. Format: integer; default value: 150

node_pack
Controls how multiple processor nodes are allocated to jobs. If this attribute is set to true,
jobs will be assigned to the multiple processor nodes with the fewest free processors. This
packs jobs into the fewest possible nodes leaving multiple processor nodes free for jobs which
need many processors on a node. If set to false, jobs will be scattered across nodes reducing
conflicts over memory between jobs. If unset, the jobs are packed on nodes in the order that
the nodes are declared to the server (in the nodes file). Default value: unset - assigned to
nodes as nodes in order that were declared.

operators
List of users granted batch operator privileges. Format of the list is identical with managers
above. Requires full manager privilege to set or alter. Default value: root on the local host.

poll_jobs
Controls how pbs_server will send job status requests to MOMs. When unset or false, statjob
requests from clients (ie: qstat(1B) or the scheduler) may trigger job status requests to MOMs
and and must wait until the MOMs have replied; this is suitable for small to medium sized
clusters. When set to true, pbs_server will send periodic job status requests; this is suitable
for busy clusters with lots of jobs, lots of clients, qstat(1B) is too slow, or your scheduler
times out. (see job_stat_rate) Default value: TRUE

query_other_jobs
The setting of this attribute controls if general users, other than the job owner, are allowed
to query the status of or select the job. Format: boolean (see acl_host_enable); Requires full
manager privilege to set or alter. default value: false - users may not query or select jobs
owned by other users.

resources_available
The list of resource and amounts available to jobs run by this server. The sum of the resource
of each type used by all jobs running by this server cannot exceed the total amount listed here.
Advisory to the Scheduler, not enforced by the server. Format:
"resources_available.resource_name=value[,...]".

resources_cost
The cost factors of various types of resources. These values are used in determining the order
of releasing members of synchronous job sets, see the section on Synchronize Job Starts. For
the most part, these value are purely arbitrary and have meaning only in the relative values
between systems. The cost of the resources requested by a job is the sum of the products of the
various resources_cost s and the amount of each resource requested by the job. It is not
necessary to assign a cost for each possible resource, only those which the site wishes to be
considered in synchronous job scheduling. Format: "resources_cost.resource_name=value[,...]";
default value: none, cost of resource is not computed.

resources_default
The list of default resource values that are set as limits for a job executing on this server
when the job does not specify a limit, and there is no queue default. Format:
"resources_default.resource_name=value[,...]"; default value: no limit.

resources_max
The maximum amount of each resource which can be requested by a single job executing on this
server if there is not a resources_max valued defined for the queue in which the job resides.
Format: "resources_max.resource_name=value[,...]"; default value: infinite usage.

sched_version
A string specifying the scheduler version. Schedulers should check this string when starting
and not become active if the wrong string is found. This is ignored by pbs_server.

scheduler_iteration
The time, in seconds, between iterations of attempts by the batch server to schedule jobs. On
each iteration, the server examines the available resources and runnable jobs to see if a job
can be initiated. This examination also occurs whenever a running batch job terminates or a new
job is placed in the queued state in an execution queue. Format: integer seconds; default
value: 10 minutes, set by {PBS_SCHEDULE_CYCLE} in server_limits.h.

scheduling
Controls if the server will request job scheduling by the PBS job scheduler. If true, the
scheduler will be called as required; if false, the scheduler will not be called and no job will
be placed into execution unless the server is directed to do so by an operator or administrator.
Setting or resetting this attribute to true results in an immediate call to the scheduler. For
more information, see the section Scheduler - Server Interaction in the PBS Administrator Guide.
Format: boolean (see acl_host_enable); default value: value of -a option when server is invoked,
if -a is not specified, the value is recovered from the prior server run. If it has never been
set, the value is "false".

server_name
The name of the server which is the same as the host name. If the hostname resolves to an
external IP address, then set this to a name that resolves to the internal IP.

submit_hosts
A list of hostnames allowed to submit jobs to this batch server regardless of ruserok().

system_cost
An arbitrary value factored into the resource cost of any job managed by this server for the
purpose of selecting which member of synchronous set is released first, see resources_cost and
section 3.2.2, Synchronize Job Starts. [default value: none, cost of resource is not computed]

tcp_timeout
Specifies the pbs_server to pbs_mom TCP socket timeout in seconds. Format: integer; default
value: 6.

The following attributes are read-only, they are maintained by the server and cannot be changed by a
client.

resources_assigned
The total amount of certain types of resources allocated to running jobs.

server_state
The current state of the server:

Active The server is running and will invoke the job scheduler as required to schedule jobs for
execution.

Idle The server is running but will not invoke the job scheduler.

Scheduling
The server is running and there is an outstanding request to the job scheduler.

Terminating
The server is terminating. No additional jobs will be scheduled.

Terminating, Delayed
The server is terminating in delayed mode. The server will not run any new jobs and will
shutdown when the last currently executing job completes.

state_count
The total number of jobs managed by the server currently in each state.

total_jobs
The total number of jobs currently managed by the server.

PBS_version
The release version number of the server.

NAME

DESCRIPTION

SEE ALSO