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SGE hostgroups

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Introduction

A host group entry is used to map host names to groups much like groups of users in Unix, but only for hosts. Names of hostgroups start with the letter @. For example

$ qconf -shgrpl
@allhosts
@centos
@suse11

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:

group_name
The group_name defines the host group name. Host group names have to begin with an '@' character as explained for hostgroup_name in sge_types(5).
hostlist
The name of all hosts and host groups (see host_identifier in sge_types(1)) which are member of the group. As list separators white-spaces are supported only. Default value for this parameter is NONE.

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.

Example

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.

To show the host group list

qconf -shgrpl  
The 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. 

To show a host group configuration

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.

To show a host group with a resolved host list

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. 

To add a host group from a file

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.

To modify a host group

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.

To delete a host group

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

Recommended Links

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Softpanorama Recommended

Man pages: sge_types(1), qconf(1)

Daniel's Blog about Grid Engine

Grid Scheduler - Sun Grid Engine HOWTOs

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Content

General Grid Engine concepts

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

Resource management

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

Cluster management

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

Reducing and Eliminating NFS

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

Special Applications

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 Parallel Libraries

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

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.

Accounting and Reporting Database (ARCo)

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

Installation, Upgrade, Patches

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



Etc

Society

Groupthink : Two Party System as Polyarchy : Corruption of Regulators : Bureaucracies : Understanding Micromanagers and Control Freaks : Toxic Managers :   Harvard Mafia : Diplomatic Communication : Surviving a Bad Performance Review : Insufficient Retirement Funds as Immanent Problem of Neoliberal Regime : PseudoScience : Who Rules America : Neoliberalism  : The Iron Law of Oligarchy : Libertarian Philosophy

Quotes

War and Peace : Skeptical Finance : John Kenneth Galbraith :Talleyrand : Oscar Wilde : Otto Von Bismarck : Keynes : George Carlin : Skeptics : Propaganda  : SE quotes : Language Design and Programming Quotes : Random IT-related quotesSomerset Maugham : Marcus Aurelius : Kurt Vonnegut : Eric Hoffer : Winston Churchill : Napoleon Bonaparte : Ambrose BierceBernard Shaw : Mark Twain Quotes

Bulletin:

Vol 25, No.12 (December, 2013) Rational Fools vs. Efficient Crooks The efficient markets hypothesis : Political Skeptic Bulletin, 2013 : Unemployment Bulletin, 2010 :  Vol 23, No.10 (October, 2011) An observation about corporate security departments : Slightly Skeptical Euromaydan Chronicles, June 2014 : Greenspan legacy bulletin, 2008 : Vol 25, No.10 (October, 2013) Cryptolocker Trojan (Win32/Crilock.A) : Vol 25, No.08 (August, 2013) Cloud providers as intelligence collection hubs : Financial Humor Bulletin, 2010 : Inequality Bulletin, 2009 : Financial Humor Bulletin, 2008 : Copyleft Problems Bulletin, 2004 : Financial Humor Bulletin, 2011 : Energy Bulletin, 2010 : Malware Protection Bulletin, 2010 : Vol 26, No.1 (January, 2013) Object-Oriented Cult : Political Skeptic Bulletin, 2011 : Vol 23, No.11 (November, 2011) Softpanorama classification of sysadmin horror stories : Vol 25, No.05 (May, 2013) Corporate bullshit as a communication method  : Vol 25, No.06 (June, 2013) A Note on the Relationship of Brooks Law and Conway Law

History:

Fifty glorious years (1950-2000): the triumph of the US computer engineering : Donald Knuth : TAoCP and its Influence of Computer Science : Richard Stallman : Linus Torvalds  : Larry Wall  : John K. Ousterhout : CTSS : Multix OS Unix History : Unix shell history : VI editor : History of pipes concept : Solaris : MS DOSProgramming Languages History : PL/1 : Simula 67 : C : History of GCC developmentScripting Languages : Perl history   : OS History : Mail : DNS : SSH : CPU Instruction Sets : SPARC systems 1987-2006 : Norton Commander : Norton Utilities : Norton Ghost : Frontpage history : Malware Defense History : GNU Screen : OSS early history

Classic books:

The Peter Principle : Parkinson Law : 1984 : The Mythical Man-MonthHow to Solve It by George Polya : The Art of Computer Programming : The Elements of Programming Style : The Unix Hater’s Handbook : The Jargon file : The True Believer : Programming Pearls : The Good Soldier Svejk : The Power Elite

Most popular humor pages:

Manifest of the Softpanorama IT Slacker Society : Ten Commandments of the IT Slackers Society : Computer Humor Collection : BSD Logo Story : The Cuckoo's Egg : IT Slang : C++ Humor : ARE YOU A BBS ADDICT? : The Perl Purity Test : Object oriented programmers of all nations : Financial Humor : Financial Humor Bulletin, 2008 : Financial Humor Bulletin, 2010 : The Most Comprehensive Collection of Editor-related Humor : Programming Language Humor : Goldman Sachs related humor : Greenspan humor : C Humor : Scripting Humor : Real Programmers Humor : Web Humor : GPL-related Humor : OFM Humor : Politically Incorrect Humor : IDS Humor : "Linux Sucks" Humor : Russian Musical Humor : Best Russian Programmer Humor : Microsoft plans to buy Catholic Church : Richard Stallman Related Humor : Admin Humor : Perl-related Humor : Linus Torvalds Related humor : PseudoScience Related Humor : Networking Humor : Shell Humor : Financial Humor Bulletin, 2011 : Financial Humor Bulletin, 2012 : Financial Humor Bulletin, 2013 : Java Humor : Software Engineering Humor : Sun Solaris Related Humor : Education Humor : IBM Humor : Assembler-related Humor : VIM Humor : Computer Viruses Humor : Bright tomorrow is rescheduled to a day after tomorrow : Classic Computer Humor

The Last but not Least Technology is dominated by two types of people: those who understand what they do not manage and those who manage what they do not understand ~Archibald Putt. Ph.D


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Last modified: November, 12, 2014