QSUB(1P) POSIX Programmer's Manual QSUB(1P)
PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding
Linux manual page for details of Linux behavior), or the interface may
not be implemented on Linux.
NAME
qsub -- submit a script
SYNOPSIS
qsub [-a date_time] [-A account_string] [-c interval]
[-C directive_prefix] [-e path_name] [-h] [-j join_list]
[-k keep_list] [-m mail_options] [-M mail_list] [-N name]
[-o path_name] [-p priority] [-q destination] [-r y|n]
[-S path_name_list] [-u user_list] [-v variable_list] [-V]
[-z] [script]
DESCRIPTION
To submit a script is to create a batch job that executes the script. A
script is submitted by a request to a batch server. The qsub utility is
a user-accessible batch client that submits a script.
Upon successful completion, the qsub utility shall have created a batch
job that will execute the submitted script.
The qsub utility shall submit a script by sending a Queue Job Request
to a batch server.
The qsub utility shall place the value of the following environment
variables in the Variable_List attribute of the batch job: HOME, LANG,
LOGNAME, PATH, MAIL, SHELL, and TZ. The name of the environment vari-
able shall be the current name prefixed with the string PBS_O_.
Note: If the current value of the HOME variable in the environment
space of the qsub utility is /aa/bb/cc, then qsub shall place
PBS_O_HOME=/aa/bb/cc in the Variable_List attribute of the
batch job.
In addition to the variables described above, the qsub utility shall
add the following variables with the indicated values to the variable
list:
PBS_O_WORKDIR The absolute path of the current working directory of the
qsub utility process.
PBS_O_HOST The name of the host on which the qsub utility is run-
ning.
OPTIONS
The qsub utility shall conform to the Base Definitions volume of
POSIX.1-2008, Section 12.2, Utility Syntax Guidelines.
The following options shall be supported by the implementation:
-a date_time
Define the time at which a batch job becomes eligible for
execution.
The qsub utility shall accept an option-argument that con-
forms to the syntax of the time operand of the touch utility.
Table 4-19: Environment Variable Values (Utilities)
+--------------+---------------------------+
|Variable Name | Value at qsub Time |
+--------------+---------------------------+
|PBS_O_HOME | HOME |
|PBS_O_HOST | Client host name |
|PBS_O_LANG | LANG |
|PBS_O_LOGNAME | LOGNAME |
|PBS_O_PATH | PATH |
|PBS_O_MAIL | MAIL |
|PBS_O_SHELL | SHELL |
|PBS_O_TZ | TZ |
|PBS_O_WORKDIR | Current working directory |
+--------------+---------------------------+
Note: The server that initiates execution of the batch
job will add other variables to the batch job's
environment; see Section 3.2.2.1, Batch Job Execu-
tion.
The qsub utility shall set the Execution_Time attribute of
the batch job to the number of seconds since the Epoch that
is equivalent to the local time expressed by the value of the
date_time option-argument. The Epoch is defined in the Base
Definitions volume of POSIX.1-2008, Section 3.150, Epoch.
If the -a option is not presented to the qsub utility, the
utility shall set the Execution_Time attribute of the batch
job to a time (number of seconds since the Epoch) that is
earlier than the time at which the utility exits.
-A account_string
Define the account to which the resource consumption of the
batch job should be charged.
The syntax of the account_string option-argument is unspeci-
fied.
The qsub utility shall set the Account_Name attribute of the
batch job to the value of the account_string option-argument.
If the -A option is not presented to the qsub utility, the
utility shall omit the Account_Name attribute from the
attributes of the batch job.
-c interval
Define whether the batch job should be checkpointed, and if
so, how often.
The qsub utility shall accept a value for the interval
option-argument that is one of the following:
n No checkpointing shall be performed on the batch
job (NO_CHECKPOINT).
s Checkpointing shall be performed only when the
batch server is shut down (CHECKPOINT_AT_SHUTDOWN).
c Automatic periodic checkpointing shall be performed
at the Minimum_Cpu_Interval attribute of the batch
queue, in units of CPU minutes (CHECK-
POINT_AT_MIN_CPU_INTERVAL).
c=minutes Automatic periodic checkpointing shall be performed
every minutes of CPU time, or every Mini-
mum_Cpu_Interval minutes, whichever is greater. The
minutes argument shall conform to the syntax for
unsigned integers and shall be greater than zero.
The qsub utility shall set the Checkpoint attribute of the
batch job to the value of the interval option-argument.
If the -c option is not presented to the qsub utility, the
utility shall set the Checkpoint attribute of the batch job
to the single character 'u' (CHECKPOINT_UNSPECIFIED).
-C directive_prefix
Define the prefix that declares a directive to the qsub util-
ity within the script.
The directive_prefix is not a batch job attribute; it affects
the behavior of the qsub utility.
If the -C option is presented to the qsub utility, and the
value of the directive_prefix option-argument is the null
string, the utility shall not scan the script file for direc-
tives. If the -C option is not presented to the qsub utility,
then the value of the PBS_DPREFIX environment variable is
used. If the environment variable is not defined, then #PBS
encoded in the portable character set is the default.
-e path_name
Define the path to be used for the standard error stream of
the batch job.
The qsub utility shall accept a path_name option-argument
which can be preceded by a host name element of the form
hostname:.
If the path_name option-argument constitutes an absolute
pathname, the qsub utility shall set the Error_Path attribute
of the batch job to the value of the path_name option-argu-
ment.
If the path_name option-argument constitutes a relative path-
name and no host name element is specified, the qsub utility
shall set the Error_Path attribute of the batch job to the
value of the absolute pathname derived by expanding the
path_name option-argument relative to the current directory
of the process executing qsub.
If the path_name option-argument constitutes a relative path-
name and a host name element is specified, the qsub utility
shall set the Error_Path attribute of the batch job to the
value of the path_name option-argument without expansion. The
host name element shall be included.
If the path_name option-argument does not include a host name
element, the qsub utility shall prefix the pathname with
hostname:, where hostname is the name of the host upon which
the qsub utility is being executed.
If the -e option is not presented to the qsub utility, the
utility shall set the Error_Path attribute of the batch job
to the host name and path of the current directory of the
submitting process and the default filename.
The default filename for standard error has the following
format:
job_name.esequence_number
-h Specify that a USER hold is applied to the batch job.
The qsub utility shall set the value of the Hold_Types
attribute of the batch job to the value USER.
If the -h option is not presented to the qsub utility, the
utility shall set the Hold_Types attribute of the batch job
to the value NO_HOLD.
-j join_list
Define which streams of the batch job are to be merged. The
qsub -j option shall accept a value for the join_list option-
argument that is a string of alphanumeric characters in the
portable character set (see the Base Definitions volume of
POSIX.1-2008, Section 6.1, Portable Character Set).
The qsub utility shall accept a join_list option-argument
that consists of one or more of the characters 'e' and 'o',
or the single character 'n'.
All of the other batch job output streams specified will be
merged into the output stream represented by the character
listed first in the join_list option-argument.
For each unique character in the join_list option-argument,
the qsub utility shall add a value to the Join_Path attribute
of the batch job as follows, each representing a different
batch job stream to join:
e The standard error of the batch job (JOIN_STD_ERROR).
o The standard output of the batch job (JOIN_STD_OUTPUT).
An existing Join_Path attribute can be cleared by the follow-
ing join type:
n NO_JOIN
If 'n' is specified, then no files are joined. The qsub util-
ity shall consider it an error if any join type other than
'n' is combined with join type 'n'.
Strictly conforming applications shall not repeat any of the
characters 'e', 'o', or 'n' within the join_list option-argu-
ment. The qsub utility shall permit the repetition of charac-
ters, but shall not assign additional meaning to the repeated
characters.
An implementation may define other join types. The confor-
mance document for an implementation shall describe any addi-
tional batch job streams, how they are specified, their
internal behavior, and how they affect the behavior of the
utility.
If the -j option is not presented to the qsub utility, the
utility shall set the value of the Join_Path attribute of the
batch job to NO_JOIN.
-k keep_list
Define which output of the batch job to retain on the execu-
tion host.
The qsub -k option shall accept a value for the keep_list
option-argument that is a string of alphanumeric characters
in the portable character set (see the Base Definitions vol-
ume of POSIX.1-2008, Section 6.1, Portable Character Set).
The qsub utility shall accept a keep_list option-argument
that consists of one or more of the characters 'e' and 'o',
or the single character 'n'.
For each unique character in the keep_list option-argument,
the qsub utility shall add a value to the Keep_Files
attribute of the batch job as follows, each representing a
different batch job stream to keep:
e The standard error of the batch job (KEEP_STD_ERROR).
o The standard output of the batch job (KEEP_STD_OUTPUT).
If both 'e' and 'o' are specified, then both files are
retained. An existing Keep_Files attribute can be cleared by
the following keep type:
n NO_KEEP
If 'n' is specified, then no files are retained. The qsub
utility shall consider it an error if any keep type other
than 'n' is combined with keep type 'n'.
Strictly conforming applications shall not repeat any of the
characters 'e', 'o', or 'n' within the keep_list option-argu-
ment. The qsub utility shall permit the repetition of charac-
ters, but shall not assign additional meaning to the repeated
characters.
An implementation may define other keep types. The confor-
mance document for an implementation shall describe any addi-
tional keep types, how they are specified, their internal
behavior, and how they affect the behavior of the utility. If
the -k option is not presented to the qsub utility, the util-
ity shall set the Keep_Files attribute of the batch job to
the value NO_KEEP.
-m mail_options
Define the points in the execution of the batch job at which
the batch server that manages the batch job shall send mail
about a change in the state of the batch job.
The qsub -m option shall accept a value for the mail_options
option-argument that is a string of alphanumeric characters
in the portable character set (see the Base Definitions vol-
ume of POSIX.1-2008, Section 6.1, Portable Character Set).
The qsub utility shall accept a value for the mail_options
option-argument that is a string of one or more of the char-
acters 'e', 'b', and 'a', or the single character 'n'.
For each unique character in the mail_options option-argu-
ment, the qsub utility shall add a value to the Mail_Users
attribute of the batch job as follows, each representing a
different time during the life of a batch job at which to
send mail:
e MAIL_AT_EXIT
b MAIL_AT_BEGINNING
a MAIL_AT_ABORT
If any of these characters are duplicated in the mail_options
option-argument, the duplicates shall be ignored.
An existing Mail_Points attribute can be cleared by the fol-
lowing mail type:
n NO_MAIL
If 'n' is specified, then mail is not sent. The qsub utility
shall consider it an error if any mail type other than 'n' is
combined with mail type 'n'.
Strictly conforming applications shall not repeat any of the
characters 'e', 'b', 'a', or 'n' within the mail_options
option-argument.
The qsub utility shall permit the repetition of characters,
but shall not assign additional meaning to the repeated char-
acters. An implementation may define other mail types. The
conformance document for an implementation shall describe any
additional mail types, how they are specified, their internal
behavior, and how they affect the behavior of the utility.
If the -m option is not presented to the qsub utility, the
utility shall set the Mail_Points attribute to the value
MAIL_AT_ABORT.
-M mail_list
Define the list of users to which a batch server that exe-
cutes the batch job shall send mail, if the server sends mail
about the batch job.
The syntax of the mail_list option-argument is unspecified.
If the implementation of the qsub utility uses a name service
to locate users, the utility should accept the syntax used by
the name service.
If the implementation of the qsub utility does not use a name
service to locate users, the implementation should accept the
following syntax for user names:
mail_address[,,mail_address,, ...]
The interpretation of mail_address is implementation-defined.
The qsub utility shall set the Mail_Users attribute of the
batch job to the value of the mail_list option-argument.
If the -M option is not presented to the qsub utility, the
utility shall place only the user name and host name for the
current process in the Mail_Users attribute of the batch job.
-N name Define the name of the batch job.
The qsub -N option shall accept a value for the name option-
argument that is a string of up to 15 alphanumeric characters
in the portable character set (see the Base Definitions vol-
ume of POSIX.1-2008, Section 6.1, Portable Character Set)
where the first character is alphabetic.
The qsub utility shall set the value of the Job_Name
attribute of the batch job to the value of the name option-
argument.
If the -N option is not presented to the qsub utility, the
utility shall set the Job_Name attribute of the batch job to
the name of the script argument from which the directory
specification if any, has been removed.
If the -N option is not presented to the qsub utility, and
the script is read from standard input, the utility shall set
the Job_Name attribute of the batch job to the value STDIN.
-o path_name
Define the path for the standard output of the batch job.
The qsub utility shall accept a path_name option-argument
that conforms to the syntax of the path_name element defined
in the System Interfaces volume of POSIX.1-2008, which can be
preceded by a host name element of the form hostname:.
If the path_name option-argument constitutes an absolute
pathname, the qsub utility shall set the Output_Path
attribute of the batch job to the value of the path_name
option-argument without expansion.
If the path_name option-argument constitutes a relative path-
name and no host name element is specified, the qsub utility
shall set the Output_Path attribute of the batch job to the
pathname derived by expanding the value of the path_name
option-argument relative to the current directory of the
process executing the qsub.
If the path_name option-argument constitutes a relative path-
name and a host name element is specified, the qsub utility
shall set the Output_Path attribute of the batch job to the
value of the path_name option-argument without expansion.
If the path_name option-argument does not specify a host name
element, the qsub utility shall prefix the pathname with
hostname:, where hostname is the name of the host upon which
the qsub utility is executing.
If the -o option is not presented to the qsub utility, the
utility shall set the Output_Path attribute of the batch job
to the host name and path of the current directory of the
submitting process and the default filename.
The default filename for standard output has the following
format:
job_name.osequence_number
-p priority
Define the priority the batch job should have relative to
other batch jobs owned by the batch server.
The qsub utility shall set the Priority attribute of the
batch job to the value of the priority option-argument.
If the -p option is not presented to the qsub utility, the
value of the Priority attribute is implementation-defined.
The qsub utility shall accept a value for the priority
option-argument that conforms to the syntax for signed deci-
mal integers, and which is not less than -1024 and not
greater than 1023.
-q destination
Define the destination of the batch job.
The destination is not a batch job attribute; it determines
the batch server, and possibly the batch queue, to which the
qsub utility batch queues the batch job.
The qsub utility shall submit the script to the batch server
named by the destination option-argument or the server that
owns the batch queue named in the destination option-argu-
ment.
The qsub utility shall accept an option-argument for the -q
option that conforms to the syntax for a destination (see
Section 3.3.2, Destination).
If the -q option is not presented to the qsub utility, the
qsub utility shall submit the batch job to the default desti-
nation. The mechanism for determining the default destination
is implementation-defined.
-r y|n Define whether the batch job is rerunnable.
If the value of the option-argument is y, the qsub utility
shall set the Rerunable attribute of the batch job to TRUE.
If the value of the option-argument is n, the qsub utility
shall set the Rerunable attribute of the batch job to FALSE.
If the -r option is not presented to the qsub utility, the
utility shall set the Rerunable attribute of the batch job to
TRUE.
-S path_name_list
Define the pathname to the shell under which the batch job is
to execute.
The qsub utility shall accept a path_name_list option-argu-
ment that conforms to the following syntax:
pathname[@host][,,pathname[@host],, ...]
The qsub utility shall allow only one pathname for a given
host name. The qsub utility shall allow only one pathname
that is missing a corresponding host name.
The qsub utility shall add a value to the Shell_Path_List
attribute of the batch job for each entry in the
path_name_list option-argument.
If the -S option is not presented to the qsub utility, the
utility shall set the Shell_Path_List attribute of the batch
job to the null string.
The conformance document for an implementation shall describe
the mechanism used to set the default shell and determine the
current value of the default shell. An implementation shall
provide a means for the installation to set the default shell
to the login shell of the user under which the batch job is
to execute. See Section 3.3.3, Multiple Keyword-Value Pairs
for a means of removing keyword=value (and value@keyword)
pairs and other general rules for list-oriented batch job
attributes.
-u user_list
Define the user name under which the batch job is to execute.
The qsub utility shall accept a user_list option-argument
that conforms to the following syntax:
username[@host][,,username[@host],, ...]
The qsub utility shall accept only one user name that is
missing a corresponding host name. The qsub utility shall
accept only one user name per named host.
The qsub utility shall add a value to the User_List attribute
of the batch job for each entry in the user_list option-argu-
ment.
If the -u option is not presented to the qsub utility, the
utility shall set the User_List attribute of the batch job to
the user name from which the utility is executing. See Sec-
tion 3.3.3, Multiple Keyword-Value Pairs for a means of
removing keyword=value (and value@keyword) pairs and other
general rules for list-oriented batch job attributes.
-v variable_list
Add to the list of variables that are exported to the session
leader of the batch job.
A variable_list is a set of strings of either the form <vari-
able> or <variable=value>, delimited by <comma> characters.
If the -v option is presented to the qsub utility, the util-
ity shall also add, to the environment Variable_List
attribute of the batch job, every variable named in the envi-
ronment variable_list option-argument and, optionally, values
of specified variables.
If a value is not provided on the command line, the qsub
utility shall set the value of each variable in the environ-
ment Variable_List attribute of the batch job to the value of
the corresponding environment variable for the process in
which the utility is executing; see Table 4-19, Environment
Variable Values (Utilities).
A conforming application shall not repeat a variable in the
environment variable_list option-argument.
The qsub utility shall not repeat a variable in the environ-
ment Variable_List attribute of the batch job. See Section
3.3.3, Multiple Keyword-Value Pairs for a means of removing
keyword=value (and value@keyword) pairs and other general
rules for list-oriented batch job attributes.
-V Specify that all of the environment variables of the process
are exported to the context of the batch job.
The qsub utility shall place every environment variable in
the process in which the utility is executing in the list and
shall set the value of each variable in the attribute to the
value of that variable in the process.
-z Specify that the utility does not write the batch job_identi-
fier of the created batch job to standard output.
If the -z option is presented to the qsub utility, the util-
ity shall not write the batch job_identifier of the created
batch job to standard output.
If the -z option is not presented to the qsub utility, the
utility shall write the identifier of the created batch job
to standard output.
OPERANDS
The qsub utility shall accept a script operand that indicates the path
to the script of the batch job.
If the script operand is not presented to the qsub utility, or if the
operand is the single-character string '-', the utility shall read the
script from standard input.
If the script represents a partial path, the qsub utility shall expand
the path relative to the current directory of the process executing the
utility.
STDIN
The qsub utility reads the script of the batch job from standard input
if the script operand is omitted or is the single character '-'.
INPUT FILES
In addition to binding the file indicated by the script operand to the
batch job, the qsub utility reads the script file and acts on direc-
tives in the script.
ENVIRONMENT VARIABLES
The following environment variables shall affect the execution of qsub:
LANG Provide a default value for the internationalization vari-
ables that are unset or null. (See the Base Definitions vol-
ume of POSIX.1-2008, Section 8.2, Internationalization Vari-
ables the precedence of internationalization variables used
to determine the values of locale categories.)
LC_ALL If set to a non-empty string value, override the values of
all the other internationalization variables.
LC_CTYPE Determine the locale for the interpretation of sequences of
bytes of text data as characters (for example, single-byte as
opposed to multi-byte characters in arguments).
LC_MESSAGES
Determine the locale that should be used to affect the format
and contents of diagnostic messages written to standard
error.
LOGNAME Determine the login name of the user.
PBS_DPREFIX
Determine the default prefix for directives within the
script.
SHELL Determine the pathname of the preferred command language
interpreter of the user.
TZ Determine the timezone used to interpret the date-time
option-argument. If TZ is unset or null, an unspecified
default timezone shall be used.
ASYNCHRONOUS EVENTS
Once created, a batch job exists until it exits, aborts, or is deleted.
After a batch job is created by the qsub utility, batch servers might
route, execute, modify, or delete the batch job.
STDOUT
The qsub utility writes the batch job_identifier assigned to the batch
job to standard output, unless the -z option is specified.
STDERR
The standard error shall be used only for diagnostic messages.
OUTPUT FILES
None.
EXTENDED DESCRIPTION
Script Preservation
The qsub utility shall make the script available to the server execut-
ing the batch job in such a way that the server executes the script as
it exists at the time of submission.
The qsub utility can send a copy of the script to the server with the
Queue Job Request or store a temporary copy of the script in a location
specified to the server.
Option Specification
A script can contain directives to the qsub utility.
The qsub utility shall scan the lines of the script for directives,
skipping blank lines, until the first line that begins with a string
other than the directive string; if directives occur on subsequent
lines, the utility shall ignore those directives.
Lines are separated by a <newline>. If the first line of the script
begins with "#!" or a <colon> (':'), then it is skipped. The qsub util-
ity shall process a line in the script as a directive if and only if
the string of characters from the first non-white-space character on
the line until the first <space> or <tab> on the line match the direc-
tive prefix. If a line in the script contains a directive and the final
characters of the line are <backslash> and <newline>, then the next
line shall be interpreted as a continuation of that directive.
The qsub utility shall process the options and option-arguments con-
tained on the directive prefix line using the same syntax as if the
options were input on the qsub utility.
The qsub utility shall continue to process a directive prefix line
until after a <newline> is encountered. An implementation may ignore
lines which, according to the syntax of the shell that will interpret
the script, are comments. An implementation shall describe in the con-
formance document the format of any shell comments that it will recog-
nize.
If an option is present in both a directive and the arguments to the
qsub utility, the utility shall ignore the option and the corresponding
option-argument, if any, in the directive.
If an option that is present in the directive is not present in the
arguments to the qsub utility, the utility shall process the option and
the option-argument, if any.
In order of preference, the qsub utility shall select the directive
prefix from one of the following sources:
* If the -C option is presented to the utility, the value of the
directive_prefix option-argument
* If the environment variable PBS_DPREFIX is defined, the value of
that variable
* The four-character string "#PBS" encoded in the portable character
set
If the -C option is present in the script file it shall be ignored.
EXIT STATUS
The following exit values shall be returned:
0 Successful completion.
>0 An error occurred.
CONSEQUENCES OF ERRORS
Default.
The following sections are informative.
APPLICATION USAGE
None.
EXAMPLES
None.
RATIONALE
The qsub utility allows users to create a batch job that will process
the script specified as the operand of the utility.
The options of the qsub utility allow users to control many aspects of
the queuing and execution of a batch job.
The -a option allows users to designate the time after which the batch
job will become eligible to run. By specifying an execution time, users
can take advantage of resources at off-peak hours, synchronize jobs
with chronologically predictable events, and perhaps take advantage of
off-peak pricing of computing time. For these reasons and others, a
timing option is existing practice on the part of almost every batch
system, including NQS.
The -A option allows users to specify the account that will be charged
for the batch job. Support for account is not mandatory for conforming
batch servers.
The -C option allows users to prescribe the prefix for directives
within the script file. The default prefix "#PBS" may be inappropriate
if the script will be interpreted with an alternate shell, as specified
by the -S option.
The -c option allows users to establish the checkpointing interval for
their jobs. A checkpointing system, which is not defined by this volume
of POSIX.1-2008, allows recovery of a batch job at the most recent
checkpoint in the event of a crash. Checkpointing is typically used for
jobs that consume expensive computing time or must meet a critical
schedule. Users should be allowed to make the tradeoff between the
overhead of checkpointing and the risk to the timely completion of the
batch job; therefore, this volume of POSIX.1-2008 provides the check-
pointing interval option. Support for checkpointing is optional for
batch servers.
The -e option allows users to redirect the standard error streams of
their jobs to a non-default path. For example, if the submitted script
generally produces a great deal of useless error output, a user might
redirect the standard error output to the null device. Or, if the file
system holding the default location (the home directory of the user)
has too little free space, the user might redirect the standard error
stream to a file in another file system.
The -h option allows users to create a batch job that is held until
explicitly released. The ability to create a held job is useful when
some external event must complete before the batch job can execute. For
example, the user might submit a held job and release it when the sys-
tem load has dropped.
The -j option allows users to merge the standard error of a batch job
into its standard output stream, which has the advantage of showing the
sequential relationship between output and error messages.
The -m option allows users to designate those points in the execution
of a batch job at which mail will be sent to the submitting user, or to
the account(s) indicated by the -M option. By requesting mail notifica-
tion at points of interest in the life of a job, the submitting user,
or other designated users, can track the progress of a batch job.
The -N option allows users to associate a name with the batch job. The
job name in no way affects the processing of the batch job, but rather
serves as a mnemonic handle for users. For example, the batch job name
can help the user distinguish between multiple jobs listed by the qstat
utility.
The -o option allows users to redirect the standard output stream. A
user might, for example, wish to redirect to the null device the stan-
dard output stream of a job that produces copious yet superfluous out-
put.
The -P option allows users to designate the relative priority of a
batch job for selection from a queue.
The -q option allows users to specify an initial queue for the batch
job. If the user specifies a routing queue, the batch server routes the
batch job to another queue for execution or further routing. If the
user specifies a non-routing queue, the batch server of the queue even-
tually executes the batch job.
The -r option allows users to control whether the submitted job will be
rerun if the controlling batch node fails during execution of the batch
job. The -r option likewise allows users to indicate whether or not
the batch job is eligible to be rerun by the qrerun utility. Some jobs
cannot be correctly rerun because of changes they make in the state of
databases or other aspects of their environment. This volume of
POSIX.1-2008 specifies that the default, if the -r option is not pre-
sented to the utility, will be that the batch job cannot be rerun,
since the result of rerunning a non-rerunnable job might be catastroph-
ic.
The -S option allows users to specify the program (usually a shell)
that will be invoked to process the script of the batch job. This
option has been modified to allow a list of shell names and locations
associated with different hosts.
The -u option is useful when the submitting user is authorized to use
more than one account on a given host, in which case the -u option
allows the user to select from among those accounts. The option-argu-
ment is a list of user-host pairs, so that the submitting user can pro-
vide different user identifiers for different nodes in the event the
batch job is routed. The -u option provides a lot of flexibility to
accommodate sites with complex account structures. Users that have the
same user identifier on all the hosts they are authorized to use will
not need to use the -u option.
The -V option allows users to export all their current environment
variables, as of the time the batch job is submitted, to the context of
the processes of the batch job.
The -v option allows users to export specific environment variables
from their current process to the processes of the batch job.
The -z option allows users to suppress the writing of the batch job
identifier to standard output. The -z option is an existing NQS prac-
tice that has been standardized.
Historically, the qsub utility has served the batch job-submission
function in the NQS system, the existing practice on which it is based.
Some changes and additions have been made to the qsub utility in this
volume of POSIX.1-2008, vis-a-vis NQS, as a result of the growing pool
of experience with distributed batch systems.
The set of features of the qsub utility as defined in this volume of
POSIX.1-2008 appears to incorporate all the common existing practice on
potentially conforming platforms.
FUTURE DIRECTIONS
The qsub utility may be removed in a future version.
SEE ALSO
Chapter 3, Batch Environment Services, qrerun, qstat, touch
The Base Definitions volume of POSIX.1-2008, Section 3.150, Epoch, Sec-
tion 6.1, Portable Character Set, Chapter 8, Environment Variables,
Section 12.2, Utility Syntax Guidelines
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri-
cal and Electronics Engineers, Inc and The Open Group. (This is
POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online
at http://www.unix.org/online.html .
Any typographical or formatting errors that appear in this page are
most likely to have been introduced during the conversion of the source
files to man page format. To report such errors, see https://www.ker-
nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2013 QSUB(1P)
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