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Each host group entry file defines one group. Groups can also be referenced inside groups (which is impossible in Unix /etc/group file). These groups are called subgroups.
A list of currently configured host group entries can be displayed via the qconf(1) with -shgrpl option. The contents of each enlisted host group entry can be shown via the -shgrp switch. The output follows the hostgroup format description.
New host group entries can be created and existing can be modified via the -ahgrp, -mhgrp, -dhgrp and -?attr options to qconf(1).
Note, Sun Grid Engine allows backslashes (\) be used to escape newline (\newline) characters. The backslash and the newline are replaced with a space (" ") character before any interpretation.
A host group entry contains following parameters:
Note: if the first character of the host_identifier is an "@" sign, then the name is used as a reference to a hostgroup(5) which is interpreted to be a sub group of this group.
Host groups enable you to use a single name to refer to multiple hosts. A host group can include other host groups as well as multiple individual hosts. Host groups that are members of another host group are subgroups of that host group. For example, you might define a host group called @bigMachines that includes the following members:
@linux64 @linux32 blade1 blade2
The initial @ sign indicates that the name is a host group. The host group @bigMachines includes all hosts that are members of the two subgroups @linux64 and @linux32. The group @bigMachines also includes two individual hosts, blade1 and blade2.
qconf -shgrplThe option -shgrpl (show host group list) displays a list of all host groups. To add a host group to the list of host groups, type the following command:
qconf -ahgrp <hostgroupname> The ahgrp option (add host group) adds a new host group to the list of host groups. See the hostgroup(5) man page for a detailed description of the configuration format.
qconf -shgrp <hostgroupname>
The option -shgrp (show host group) shows the configuration of the specified host group. To show the host group as a tree, type the following command:
qconf -shgrp_tree <hostgroupname>
The option -shgrp_tree (show host group as a tree) shows the configuration of the specified host group and its sub-hostgroups as a tree.
qconf -shgrp_resolved <hostgroupname> The -shgrp_resolved option (show host group with resolved host list) shows the configuration of the specified host group with a resolved host list.
qconf -Ahgrp <filename>The option -Ahgrp (add host group from a file) displays an editor that contains a host group configuration defined in filename. The editor is either the default vi editor or the editor that corresponds to the $EDITOR environment variable. To configure the host group, change and save the configuration file template.
qconf -mhgrp <hostgroupname>The option -mhgrp (modify host group) displays an editor that contains the configuration of the specified host group as template. You can modify the groupname, add a host to the hostlist, add a host group as a subgroup, and remove a host or host group. The editor is either the default vi editor or the editor that corresponds to the EDITOR environment variable. To modify the host group configuration, change and save the configuration file template.
To modify a host group from a file, type the following command:
qconf -Mhgrp <filename>The option -Mhgrp (modify host group from a file) uses the content of filename as host group configuration template. The configuration in the specified file must refer to an existing host group. You can modify the groupname, add a host to the hostlist, add a host group as a subgroup, and remove a host or host group. The configuration of this host group is replaced by the file content.
qconf -dhgrp <hostgroupname>The option -dhgrp (delete host group) deletes the specified host group from the list of host groups. All entries in the host group configuration are lost.
For more information on how to configure host groups from file or modify many objects at a time, see or the qconf
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Man pages: sge_types(1), qconf(1)
Daniel's Blog about Grid Engine
Grid Scheduler - Sun Grid Engine HOWTOs
General Grid Engine concepts Resource management Cluster management Special Applications Tight Integration of Parallel Libraries Accounting and Reporting Database (ARCo) DRMAA Installation, Upgrade, Patches
Introduction to Grid Engine video Basic Usage Common Administrative Tasks Customization of Qmon Migration of Qmaster to Another Machine Setting Up a Shadow Master Commonly Seen Problems Troubleshooting Array Jobs
Managing Resources Abstractly Consumable Resources Setting Up Load Sensors to Track Resource Availablility/Utilisation Different resource management approaches with Grid Engine Tracking interactive idle time of desktop workstations Relocating Jobs From a User's Workstation Grid Engine Enterprise Edition (features now in the generic version)
Sun Grid Engine, Enterprise Edition — Configuration Use Cases and Guidelines (features now in the generic version) [broken link]
Scheduler Policies for Job Prioritization in the N1 Grid Engine 6 System [broken link]
File Staging Logical resource expressions Resource quotas
Tuning guide Master monitoring and bottleneck analysis on Linux Command Line and Scripting of Administrative Tasks Submitting Binaries Configuring qrsh and qlogin to use ssh, is now described in the remote_startup man page Rotating and truncating Log Files
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Usage Installing on a system with multiple network interfaces Installing on a system with Linux IP Multipathing
Deploying PCs with Grid Engine enabled KNOPPIX boot images
Using Host Groups and Cluster Queues [broken link]
What Linux 10 containers are good for? A hands-on sample. [broken link]
Running jobs on data kept (on a USB connected HD) in a separate network via sshfs Rocks-In-The-Box — A Virtual Rocks Cluster in a VirtualBox Cluster simulation Configuration backup Security Recipes for commonly-required configurations
SGE Transfer Queue to Globus and GridWay and direct access from GridWay without Globus (not entirely clear it's under the GridWay licence)
Olesen-FLEXlm-Integration, also wiki documentation of the Olesen method Using Clearcase Using Mentor ModelSim and Mentor JobSpy Mathematica Ansys Using mpiBLAST [broken link, and the MPI version has been said not to be worth the trouble]
MultiClustering using Transfer Queues Integration of SGE and Solaris 9 Resource Manager SGE-Globus integration Checkpointing jobs using SGE's checkpointing support Checkpointing under Linux with Berkeley Lab Checkpoint/Restart; see also the BLCR home and updated integration scripts
JAM — Job & Application Manager
JGrid — an RMI-based Java interface for Grid Engine
Hostbased authentication for passphraseless SSH communication
Tight Integration of LAM/MPI and SGE Tight Integration of MPICH and SGE — With Application Notes Tight Integration of MPICH2 and SGE Removal of orphaned processes especially for MPICH2's mpd Tight Integration of PVM and SGE Mvapich (MPICH Infiniband) + Loose/Tight SGE Integration Tight integration of Open MPI with SGE and Open MPI suspend/resume
DRMAA C Binding File Staging in Grid Engine 6.0 with DRMAA DRMAA JavaTM Language Binding DRMAA Python Tutorial and Information See also the Ruby, Perl, Clojure, Tcl, alternative Java/Ruby, Go, and Erlang bindings.
Information from ARCo source repository. The webconsole/reporting components aren't supported. ARCo and Oracle 10g Database ARCo on MySQL Database (obsolete) Setting up dbwriter with Postgres Space Requirements for the ARCo database
Install SGE 6.2 patches Bugfixes for SGE 6.2 Bugfixes for SGE 6.1 Bugfixes for SGE 6.0 Bugfixes for SGE 5.3 Installation on Windows XP/SFU [broken link] and older Windows material
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