---
name: "sge_qmaster"
section: "8"
platform: "linux"
package: "gridengine-master"
version: "8.1.9+dfsg-13.1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/sge_qmaster"
---

# sge\_qmaster(8)

Grid Engine master control daemon

## NAME

sge\_qmaster - Grid Engine master control daemon

## SYNOPSIS

**sge\_qmaster** \[ **-help** \]

## DESCRIPTION

*sge\_qmaster* controls the overall Grid Engine behavior in a cluster.

## OPTIONS

- **-help**

  Prints  a listing of all options.

## ENVIRONMENT VARIABLES

- **SGE\_ROOT**

  Specifies the location of the Grid Engine standard configuration files.

- **SGE\_CELL**

  If set, specifies the default Grid Engine cell. To address a Grid Engine cell *sge\_qmaster* uses (in order of precedence):

  The name of the cell specified in the environment  variable SGE\_CELL, if it is set.

  The name of the default cell, i.e. **default**.

- **SGE\_DEBUG\_LEVEL**

  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 by the defined value.

- **SGE\_DEBUG\_LEVEL**

  If set, the qmaster will not daemonize.

- **SGE\_QMASTER\_PORT**

  If set, specifies the tcp port on which [*sge\_qmaster*(8)](/sge_qmaster/8.md) is expected to listen for communication requests. Most installations will use a services map entry for the service "sge\_qmaster" instead to define that port.

- **SGE\_EXECD\_PORT**

  If set, specifies the tcp port on which [*sge\_execd*(8)](/sge_execd/8.md) is expected to listen for communication requests. Most installations will use a services map entry for the service "sge\_execd" instead to define that port.

- **SGE\_TEST\_DELAY\_SCHEDULING**

  If set, specifies a delay in (integral seconds) before a scheduling run, for test purposes.

- **SGE\_ND**

  If set, don't daemonize the program (for debugging).

- **SGE\_ENABLE\_COREDUMP**

  If set, enable core dumps on Linux when the admin\_user is not root. Linux normally disables core dumps when the daemon has changed uid or gid.  Setting SGE\_ENABLE\_COREDUMP in sge\_qmaster's environment defeats that to enable core dumps for debugging if they are otherwise allowed.  This is typically not a big hazard with SGE, since most information is exposed in the spool area anyhow.  Dumps will appear in the host spool directory.\
   On Solaris, *coreadm*(1) may be used to enable such dumps.

- **SGE\_QMASTER\_PIDFILE**

  Path name of file to which to write the daemon process id at startup (default "qmaster.pid").  Note that this must be writable by the admin user (see *bootstrap*(5)).

## RESTRICTIONS

*sge\_qmaster* is usually started from root on the master or shadow master machines of the cluster. If started by a normal user, a master spool directory must be used to which the user has read/write access. In this case only jobs being submitted by that same user are handled correctly by the system.

## FILES

```
<sge_root>/<cell>/common/configuration
	Grid Engine global configuration
<sge_root>/<cell>/common/local_conf/<host>
	Grid Engine host specific configuration
<sge_root>/<cell>/common/qmaster_args
	sge_qmaster argument file
<sge_root>/<cell>/spool
	Default master spool directory
```

## SEE ALSO

[*sge\_intro*(1)](/sge_intro/1.md), [*sge\_conf*(5)](/sge_conf/5.md), [*sge\_execd*(8)](/sge_execd/8.md), [*sge\_shadowd*(8)](/sge_shadowd/8.md)

## COPYRIGHT

See [*sge\_intro*(1)](/sge_intro/1.md) for a full statement of rights and permissions.