qhost - show the status of Sun Grid Engine hosts, queues,
qhost [ -cb ] [ -F [resource_name,...] ] [ -help ] [ -h
host_list ] [ -j ] [ -l resource=val,... ] [ -u user,... ] [
qhost shows the current status of the available Sun Grid
Engine hosts, queues and the jobs associated with the
queues. Selection options allow you to get information about
specific hosts, queues, jobs or users. If multiple selec-
tions are done a host is only displayed if all selection
criteria for a host are met. Without any options qhost will
display a list of all hosts without queue or job informa-
-F [ resource_name,... ]
qhost will present a detailed listing of the current
resource availability per host with respect to all
resources (if the option argument is omitted) or with
respect to those resources contained in the
resource_name list. Please refer to the description of
the Full Format in section OUTPUT FORMATS below for
-cb This command line switch can be used since Sun Grid
Engine version 6.2u5 in combination with other qhost(1)
command line switches. In that case the output of the
corresponding command will contain information concern-
ing the added job to core binding feature.
If this switch is not used then the command behaves as
in version 6.2u4 and previous versions.
If this option is used then two additional columns will
be shown for each displayed host in the output. The
first is named NSOC and represents the number of avail-
able sockets on that host. The second additional column
is named NCOR and it represents the number of cores
that are available per socket on the corresponding
Prints a listing of all options.
Prints a list of all hosts contained in host_list.
-j Prints all jobs running on the queues hosted by the
shown hosts. This switch calls -q implicitly.
Defines the resources to be granted by the hosts which
should be included in the host list output. Matching is
performed on hosts based on non-mutable resource avai-
lability information only. That means load values are
always ignored except the so-called static load values
(i.e. "arch", "num_proc", "mem_total", "swap_total" and
"virtual_total") ones. Also consumable utilization is
ignored. If there are multiple -l resource requests
they will be concatenated by a logical AND: a host
needs to match all resources to be displayed.
-q Show information about the queues instances hosted by
the displayed hosts.
Display information only on those jobs and queues being
associated with the users from the given user list.
-xml This option can be used with all other options and
changes the output to XML. The used schemas are refer-
enced in the XML output. The output is printed to
If the -xml parameter is combined with -cb then the XML
output will contain additional tags containing informa-
tion about job to core binding. You can find schema
files with the suffix "_cb" in the directory
$SGE_ROOT/util/resources/schemas/qhost that describe
Depending on the presence or absence of the -q or -F and -j
option three output formats need to be differentiated. PP
Default Format (without -q, -F and -j)
For each host one line is printed. The output consists of
o the Hostname
o the Architecture.
o the Number of processors.
o the Load.
o the Total Memory.
o the Used Memory.
o the Total Swapspace.
o the Used Swapspace.
If the -q option is supplied, each host status line also
contains extra lines for every queue hosted by the host con-
o the queue name.
o the queue type - one of B(atch), I(nteractive),
C(heckpointing), P(arallel), T(ransfer) or combinations
o the number of reserved, used and available job slots,
o the state of the queue - one of u(nknown) if the
corresponding sge_execd(8) cannot be contacted, a(larm),
A(larm), C(alendar suspended), s(uspended),
S(ubordinate), d(isabled), D(isabled), E(rror) or combi-
If the state is a(alarm) at least one of the load thresholds
defined in the load_thresholds list of the queue configura-
tion (see queue_conf(5)) is currently exceeded, which
prevents from scheduling further jobs to that queue.
As opposed to this, the state A(larm) indicates that at
least one of the suspend thresholds of the queue (see
queue_conf(5)) is currently exceeded. This will result in
jobs running in that queue being successively suspended
until no threshold is violated.
The states s(uspended) and d(isabled) can be assigned to
queues and released via the qmod(1) command. Suspending a
queue will cause all jobs executing in that queue to be
The states D(isabled) and C(alendar suspended) indicate that
the queue has been disabled or suspended automatically via
the calendar facility of Sun Grid Engine (see
calendar_conf(5)), while the S(ubordinate) state indicates,
that the queue has been suspend via subordination to another
queue (see queue_conf(5) for details). When suspending a
queue (regardless of the cause) all jobs executing in that
queue are suspended too.
If an E(rror) state is displayed for a queue, sge_execd(8)
on that host was unable to locate the sge_shepherd(8) exe-
cutable on that host in order to start a job. Please check
the error logfile of that sge_execd(8) for leads on how to
resolve the problem. Please enable the queue afterwards via
the -c option of the qmod(1) command manually.
If the -F option was used, resource availability information
is printed following the host status line. For each resource
(as selected in an option argument to -F or for all
resources if the option argument was omitted) a single line
is displayed with the following format:
o a one letter specifier indicating whether the current
resource availability value was dominated by either
`g' - a cluster global,
`h' - a host total or
o a second one letter specifier indicating the source for
the current resource availability value, being one of
`l' - a load value reported for the resource,
`L' - a load value for the resource after administrator
defined load scaling has been applied,
`c' - availability derived from the consumable resources
facility (see complexes(5)),
`f' - a fixed availability definition derived from a
non-consumable complex attribute or a fixed resource
o after a colon the name of the resource on which informa-
tion is displayed.
o after an equal sign the current resource availability
The displayed availability values and the sources from which
they derive are always the minimum values of all possible
combinations. Hence, for example, a line of the form
"qf:h_vmem=4G" indicates that a queue currently has a max-
imum availability in virtual memory of 4 Gigabyte, where
this value is a fixed value (e.g. a resource limit in the
queue configuration) and it is queue dominated, i.e. the
host in total may have more virtual memory available than
this, but the queue doesn't allow for more. Contrarily a
line "hl:h_vmem=4G" would also indicate an upper bound of 4
Gigabyte virtual memory availability, but the limit would be
derived from a load value currently reported for the host.
So while the queue might allow for jobs with higher virtual
memory requirements, the host on which this particular queue
resides currently only has 4 Gigabyte available.
After the queue status line (in case of -j) a single line is
printed for each job running currently in this queue. Each
job status line contains
o the job ID,
o the job name,
o the job owner name,
o the status of the job - one of t(ransfering), r(unning),
R(estarted), s(uspended), S(uspended) or T(hreshold) (see
the Reduced Format section for detailed information),
o the start date and time and the function of the job (MAS-
TER or SLAVE - only meaningful in case of a parallel job)
o the priority of the jobs.
SGE_ROOT Specifies the location of the Sun Grid Engine
standard configuration files.
SGE_CELL If set, specifies the default Sun Grid Engine
cell. To address a Sun Grid Engine cell qhost
uses (in the order of precedence):
The name of the cell specified in the
environment variable SGE_CELL, if it is
The name of the default cell, i.e.
If set, specifies that debug information
should be written to stderr. In addition the
level of detail in which debug information is
generated is defined.
If set, specifies the tcp port on which
sge_qmaster(8) is expected to listen for com-
munication requests. Most installations will
use a services map entry for the service
"sge_qmaster" instead to define that port.
Sun Grid Engine master host file
sge_intro(1), qalter(1), qconf(1), qhold(1), qmod(1),
qstat(1), qsub(1), queue_conf(5), sge_execd(8),
See sge_intro(1) for a full statement of rights and permis-
Man(1) output converted with