(r21) SunGridEngine < CmsTier3

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---+!! Sun Grid Engine on CMS Tier3
%REVINFO{"Revision $rev, $date $time"}%


---
%TOC%
---

This document describes the planning, installation, and basic configuration of SGE 
on the PSI Tier3 cluster.   

The advanced configuration and policies will be described in a separate document.  

---+ Useful links
   * [[http://sourceforge.net/projects/gridscheduler/][Open Grid Scheduler]] - the open source continued development based on the last free SGE
   * [[http://wiki.gridengine.info/wiki/index.php/Main_Page][Grid engine wiki]]
   * [[http://www.oracle.com/technetwork/oem/grid-engine-166852.html][Oracle Grid Engine project home page]]
   * [[http://wwwx.cs.unc.edu/Research/bass/index.php/Administrators:Scheduling][Scheduling explanations from  cs.unc.edu]]
   * [[https://twiki.cern.ch/twiki/bin/view/LCG/GenericInstallGuide320#The_SGE_batch_system][SGE for glite 3.2 grid environments]]
   * [[%ATTACHURL%/SGE-GeorgetownClass3.pdf][SGE-GeorgetownClass3.pdf]]: Useful talk about SGE administration


---+ Centrally starting/stopping the service

On the admin master node:

Starting:
<pre>
ssh t3ce01 /etc/init.d/sgemaster start
cexec wn: /etc/init.d/sgeexecd start
</pre>


Stopping:
<pre>
cexec wn: /etc/init.d/sgeexecd stop
ssh t3ce01 /etc/init.d/sgemaster stop
</pre>


---
---+ SGE Installation

---
---++ Cluster Planning

---+++  Hosts 

<a name="cluster_table">
<pre>
  ========================================
  host     execute  submit  admin  master
  ----------------------------------------
  t3ce01     N        Y       Y      <b>Y</b> 
  t3ui01     N        Y       Y
  t3wn01     Y        Y       N
  t3wn02     Y        Y       N
  t3wn03     Y        Y       N
  t3wn04     Y        Y       N
  t3wn05     Y        Y       N
  t3wn06     Y        Y       N
  t3wn07     Y        Y       N
  t3wn08     Y        Y       N
  ========================================
</pre>

---+++  Environment

<pre>
  SGE_ROOT=/swshare/sge/n1ge6
  SGE_CELL=tier3
</pre>

---+++  SGE Admon

The SGE administrator account is *sgeadmin*. 

---+++  SGE Services

<pre>
# to be added to /etc/services
sge_qmaster     536/tcp        # SGE batch system master
sge_execd       537/tcp        # SGE batch system execd
</pre>


---
---++  Prerequisits

   * =SGE_ROOT= is NFS mounted root rw on all nodes. 
   * The root can do passwordless SSH (to be relaxed).  
   * The *sgeadmin* HOME is NFS mounted rw on all nodes. 
   * The *sgeadmin* user can do passwordless SSH between any two nodes. 
   * The SGE services are defined in /etc/services on all nodes. 

Here _all nodes_ means all the nodes listed in <a href="#cluster_table">the cluster table</a>.  


---
---++  Download and Install the SGE Software

<pre>
  mkdir /swshare/sge/download
  cd /swshare/sge/download
  rsync -av -e ssh markushin@pc4731:/scratch/sge /swshare/sge/download/
  
  <b>export SGE_ROOT=/swshare/sge/n1ge6</b>
  <b>export SGE_CELL=tier3</b>
  
  <b>mkdir $SGE_ROOT</b>
  <b>cd $SGE_ROOT</b>
  pwd
    /swshare/sge/n1ge6
  
  <b>tar xvzf /swshare/sge/download/sge/ge-6.1u4-common.tar.gz</b>
  <b>tar xvzf /swshare/sge/download/sge/ge-6.1u4-bin-lx24-amd64.tar.gz</b>
</pre>

<span class=TFBB> tree -d /swshare/sge/n1ge6 </span>
%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
showimgleft="%ICONURLPATH{viewtopic}%" hideimgleft="%ICONURLPATH{toggleclose-small}%"}%
<pre>
/swshare/sge/n1ge6
|-- 3rd_party
|   `-- qmon
|-- bin
|   `-- lx24-amd64
|-- catman
|   |-- a_man
|   |   |-- cat5
|   |   `-- cat8
|   |-- cat
|   |   |-- cat1
|   |   |-- cat3
|   |   |-- cat5
|   |   `-- cat8
|   |-- p_man
|   |   `-- cat3
|   `-- u_man
|       `-- cat1
|-- ckpt
|-- doc
|   |-- bdbdocs
|   |   `-- utility
|   `-- javadocs
|       |-- com
|       |   `-- sun
|       |       `-- grid
|       |           `-- drmaa
|       |-- org
|       |   `-- ggf
|       |       `-- drmaa
|       `-- resources
|-- dtrace
|-- examples
|   |-- drmaa
|   |-- jobs
|   `-- jobsbin
|       `-- lx24-amd64
|-- include
|-- lib
|   `-- lx24-amd64
|-- man
|   |-- man1
|   |-- man3
|   |-- man5
|   `-- man8
|-- mpi
|   |-- SunHPCT5
|   `-- myrinet
|-- pvm
|   `-- src
|-- qmon
|   `-- PIXMAPS
|       `-- big
|-- util
|   |-- install_modules
|   |-- rctemplates
|   |-- resources
|   |   |-- calendars
|   |   |-- centry
|   |   |-- loadsensors
|   |   |-- pe
|   |   |-- schemas
|   |   |   |-- qhost
|   |   |   |-- qquota
|   |   |   `-- qstat
|   |   |-- starter_methods
|   |   `-- usersets
|   `-- sgeCA
`-- utilbin
    `-- lx24-amd64
69 directories
</pre>
%ENDTWISTY%  

---
<a name="sge_conf"> 
---++ Edit the SGE Configuration File 

See the comments in *$SGE_ROOT/util/install_modules/tier3.conf* for details. 

<span class=TFBB>  SGE_ROOT/util/install_modules/tier3.conf </span>
%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
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<pre>
grep -v ^# $SGE_ROOT/util/install_modules/tier3.conf | sed '/^$/d'
SGE_ROOT="/swshare/sge/n1ge6"
SGE_QMASTER_PORT="536"
SGE_EXECD_PORT="537"
CELL_NAME="tier3"
ADMIN_USER="sgeadmin"
QMASTER_SPOOL_DIR="/var/spool/sge/qmaster"
EXECD_SPOOL_DIR="/var/spool/sge"
GID_RANGE="50700-50800"
SPOOLING_METHOD="classic"
DB_SPOOLING_SERVER="none"
DB_SPOOLING_DIR="/var/spool/sge/spooldb"
PAR_EXECD_INST_COUNT="8"
ADMIN_HOST_LIST="t3admin01 t3ce01 t3ui01"
SUBMIT_HOST_LIST="t3ce01 t3ui01 t3wn01 t3wn02 t3wn03 t3wn04 t3wn05 t3wn06 t3wn07 t3wn08"
EXEC_HOST_LIST="t3wn01 t3wn02 t3wn03 t3wn04 t3wn05 t3wn06 t3wn07 t3wn08"
EXECD_SPOOL_DIR_LOCAL=""
HOSTNAME_RESOLVING="true"
SHELL_NAME="ssh"
COPY_COMMAND="scp"
DEFAULT_DOMAIN="none"
ADMIN_MAIL="none"
ADD_TO_RC="false"
SET_FILE_PERMS="true"
RESCHEDULE_JOBS="wait"
SCHEDD_CONF="1"
SHADOW_HOST=""
EXEC_HOST_LIST_RM=""
REMOVE_RC="true"
WINDOWS_SUPPORT="false"
WIN_ADMIN_NAME="Administrator"
WIN_DOMAIN_ACCESS="false"
CSP_RECREATE="true"
CSP_COPY_CERTS="false"
CSP_COUNTRY_CODE="CH"
CSP_STATE="Switzerland"
CSP_LOCATION="Building"
CSP_ORGA="PSI"
CSP_ORGA_UNIT="AIT"
CSP_MAIL_ADDRESS="derek.feichtinger@psi.ch"
</pre>
%ENDTWISTY%  

---
---++  Install the SGE Master 

Login as root to the master host. 
The SGE_ROOT and QMASTER_SPOOL_DIR must be writable by root 
(see <a href="#sge_conf">SGE_ROOT/util/install_modules/tier3.conf</a>). 

Run the following commands:
<pre>
  hostname
    t3ce01
  whoami
    root

  <b>export SGE_ROOT=/swshare/sge/n1ge6</b>
  <b>export SGE_CELL=tier3</b>
  <b>cd $SGE_ROOT</b>
  <b>./inst_sge -m -auto $SGE_ROOT/util/install_modules/tier3.conf</b>
    ...
    Install log can be found in: \
    /swshare/sge/n1ge6/tier3/common/install_logs/qmaster_install_t3ce01_2008-08-11_17:47:44.log
</pre>

<span class=TFBB> /swshare/sge/n1ge6/tier3/common/install_logs/qmaster_install_t3ce01_2008-08-11_17:47:44.log </span>
%TWISTY{showlink=" Show File " hidelink=" Hide File " 
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<pre>Starting qmaster installation!

Installing Grid Engine as user >sgeadmin<

Your $SGE_ROOT directory: /swshare/sge/n1ge6

Using SGE_QMASTER_PORT >536<.

Using SGE_EXECD_PORT >537<.

Using >tier3< as CELL_NAME.
Using >/var/spool/sge/qmaster< as QMASTER_SPOOL_DIR.

Verifying and setting file permissions and owner in >3rd_party<
Verifying and setting file permissions and owner in >bin<
Verifying and setting file permissions and owner in >ckpt<
Verifying and setting file permissions and owner in >examples<
Verifying and setting file permissions and owner in >inst_sge<
Verifying and setting file permissions and owner in >install_execd<
Verifying and setting file permissions and owner in >install_qmaster<
Verifying and setting file permissions and owner in >lib<
Verifying and setting file permissions and owner in >mpi<
Verifying and setting file permissions and owner in >pvm<
Verifying and setting file permissions and owner in >qmon<
Verifying and setting file permissions and owner in >util<
Verifying and setting file permissions and owner in >utilbin<
Verifying and setting file permissions and owner in >catman<
Verifying and setting file permissions and owner in >doc<
Verifying and setting file permissions and owner in >include<
Verifying and setting file permissions and owner in >man<
Your file permissions were set
 
Using >true< as IGNORE_FQDN_DEFAULT.
If it's >true<, the domain name will be ignored.
 
Making directories
 
Setting spooling method to dynamic
Dumping bootstrapping information
Initializing spooling database

Using >50700-50800< as gid range.
Using >/var/spool/sge< as EXECD_SPOOL_DIR.
Using >none< as ADMIN_MAIL.
Reading in complex attributes.
Adding default parallel environments (PE)
Reading in parallel environments:
        PE "make.sge_pqs_api".
Reading in usersets:
        Userset "deadlineusers".
        Userset "defaultdepartment".
  
   starting sge_qmaster
   starting sge_schedd
starting up GE 6.1u4 (lx24-amd64)
 
Adding ADMIN_HOST t3admin01
t3admin01 added to administrative host list
Adding ADMIN_HOST t3ce01
adminhost "t3ce01" already exists
Adding ADMIN_HOST t3ui01
t3ui01 added to administrative host list
Adding SUBMIT_HOST t3ce01
t3ce01 added to submit host list
Adding SUBMIT_HOST t3ui01
t3ui01 added to submit host list
Adding SUBMIT_HOST t3wn01
t3wn01 added to submit host list
Adding SUBMIT_HOST t3wn02
t3wn02 added to submit host list
Adding SUBMIT_HOST t3wn03
t3wn03 added to submit host list
Adding SUBMIT_HOST t3wn04
t3wn04 added to submit host list
Adding SUBMIT_HOST t3wn05
t3wn05 added to submit host list
Adding SUBMIT_HOST t3wn06
t3wn06 added to submit host list
Adding SUBMIT_HOST t3wn07
t3wn07 added to submit host list
Adding SUBMIT_HOST t3wn08
t3wn08 added to submit host list
 
Creating the default <all.q> queue and <allhosts> hostgroup
root@t3ce01 added "@allhosts" to host group list
root@t3ce01 added "all.q" to cluster queue list
 
No CSP system installed!
No CSP system installed!
 
Setting scheduler configuration to >Normal< setting! 
changed scheduler configuration
sge_qmaster successfully installed!
</pre>
%ENDTWISTY%  

Test the master:

<pre>
  <b>ps auxwf | grep [s]ge </b>
sgeadmin  1322  0.0  0.0 77744 3248 ?        Sl   17:47   0:00 /swshare/sge/n1ge6/bin/lx24-amd64/sge_qmaster
sgeadmin  1341  0.0  0.0 66672 2228 ?        Sl   17:47   0:00 /swshare/sge/n1ge6/bin/lx24-amd64/sge_schedd
  
  <b>export PATH=$SGE_ROOT/bin/lx24-amd64:$PATH</b>
  <b>qconf -sconf</b>
</pre>

%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
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<pre>
  [root@t3ce01 n1ge6]# 
  qconf -sconf
global:
execd_spool_dir              /var/spool/sge
mailer                       /bin/mail
xterm                        /usr/bin/X11/xterm
load_sensor                  none
prolog                       none
epilog                       none
shell_start_mode             posix_compliant
login_shells                 sh,ksh,csh,tcsh
min_uid                      0
min_gid                      0
user_lists                   none
xuser_lists                  none
projects                     none
xprojects                    none
enforce_project              false
enforce_user                 auto
load_report_time             00:00:40
max_unheard                  00:05:00
reschedule_unknown           00:00:00
loglevel                     log_warning
administrator_mail           none
set_token_cmd                none
pag_cmd                      none
token_extend_time            none
shepherd_cmd                 none
qmaster_params               none
execd_params                 none
reporting_params             accounting=true reporting=false \
                             flush_time=00:00:15 joblog=false sharelog=00:00:00
finished_jobs                100
gid_range                    50700-50800
qlogin_command               telnet
qlogin_daemon                /usr/sbin/in.telnetd
rlogin_daemon                /usr/sbin/in.rlogind
max_aj_instances             2000
max_aj_tasks                 75000
max_u_jobs                   0
max_jobs                     0
auto_user_oticket            0
auto_user_fshare             0
auto_user_default_project    none
auto_user_delete_time        86400
delegated_file_staging       false
reprioritize                 0
</pre>
%ENDTWISTY%  
  


---
---++  Install the SGE Execute Hosts

NOTE: to run the install script below locally on the execute node, you will need to define it as a submit and admin host. This requires adding the host using the =qconf -ah hostname= (for admin host) and =qconf -as hostname= (for submit host) commands from an admin node. Else, the new node will not be allowed to contact the master's services.

On each execute host, where the SGE_ROOT and EXECD_SPOOL_DIR must be writable by root, 
(see <a href="#sge_conf">SGE_ROOT/util/install_modules/tier3.conf</a>) 
do the following: 
<pre>
  hostname
    t3wn01
  whoami
    root
  
  <b>export SGE_ROOT=/swshare/sge/n1ge6</b>
  <b>export SGE_CELL=tier3</b>
  
  <b>mkdir /var/spool/sge/t3wn01</b>
  <b>chown sgeadmin.root /var/spool/sge/t3wn01</b>
  
  <b>cd $SGE_ROOT</b>
  <b>./inst_sge -x -noremote -auto $SGE_ROOT/util/install_modules/tier3.conf</b>
    ...
    Install log can be found in: \
    /swshare/sge/n1ge6/tier3/common/install_logs/execd_install_t3wn01_2008-08-11_21:04:43.lo
</pre>
Note: If the script fails uncleanly, you can find the logs in /tmp/install.[PID].

Add the *sgeexecd* service manually:
<pre>
  <b>cp -a $SGE_ROOT/$SGE_CELL/common/sgeexecd /etc/init.d/</b>
  <b>chkconfig --add sgeexecd</b>
  <b>chkconfig --list sgeexecd</b>
  sgeexecd        0:off   1:off   2:off   3:on    4:off   5:on    6:off
</pre>

Check the SGE services on this host - there should be *sge_execd* running as *sgeadmin* 
on every execute host, e.g.: 
<pre>
  <b>ps auxwf | grep [s]ge</b>
sgeadmin 25309  0.0  0.0 56108 1624 ?        S    21:30   0:00 /swshare/sge/n1ge6/bin/lx24-amd64/sge_execd
</pre>

Test some SGE commands: 
<pre>
  export PATH=$SGE_ROOT/bin/lx24-amd64:$PATH
  <b>qconf -sel</b>
t3wn01
  <b>qconf -sql</b>
all.q
</pre>

<span class=TFBB> ls -lA /var/spool/sge/t3wn01 </span>
%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
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<pre>
drwxr-xr-x  2 sgeadmin sgeadmin 4096 Aug 11 21:30 active_jobs
-rw-r--r--  1 sgeadmin sgeadmin    6 Aug 11 21:30 execd.pid
drwxr-xr-x  2 sgeadmin sgeadmin 4096 Aug 11 21:30 jobs
drwxr-xr-x  2 sgeadmin sgeadmin 4096 Aug 11 21:30 job_scripts
-rw-r--r--  1 sgeadmin sgeadmin   69 Aug 11 21:30 messages
</pre>
%ENDTWISTY%  


---++ How to remove SGE Execute Hosts from the configuration %N%

remove the host from the relevant queues
<pre>
qconf -mq all.q
</pre>

Delete host from its host group (e.g. the "allhosts" group):
<pre>
qconf -mhgrp @allhosts
</pre>

Remove host from exec host list (and possibly also from admin and submission lists):

<pre>
qconf -de t3vm02
qconf -dh t3vm02
qconf -ds t3vm02
</pre>

Remove from configuration list:

<pre>
$ qconf -dconf t3vm02
</pre>

---++ Files

The following files must be installed on all hosts:

<span class=TFBB>  /etc/profile.d/sge.sh </span>
%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
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<pre>
# SGE configuration for CMS Tier3
# 2008-08-11
export SGE_ROOT=/swshare/sge/n1ge6
export SGE_CELL=tier3
export PATH=$SGE_ROOT/bin/lx24-amd64:$PATH
export MANPATH=$MANPATH:$SGE_ROOT/man:
</pre>
%ENDTWISTY%  

---++  Install the SGE Submit Hosts

A submission host just needs access to the shared SGE installation for the binaries. Then, it needs to be configured as one of the allowed submission hosts by running the following command on the master 

<pre>
qconf -as [hostname]
</pre>

After that, you should be able to run commands like =qhost= from the new host.

---
---+ SGE Postinstallation Configuration 

---++ Configure SGE Queues

---+++ all.q configuration

Edit the queue configuration using the *qconf -mq all.q* command:
<pre>
  ssh sgeadmin@t3ce01
  qconf -sq all.q >  ~/config/all.q.orig.conf
  export EDITOR=vim

  <b>qconf -mq all.q</b>
  sgeadmin@t3ce01 modified "all.q" in cluster queue list

  qconf -sq all.q >  ~/config/all.q.conf
  diff /shome/sgeadmin/config/all.q.{orig.,}conf 
17c17
< shell                 /bin/csh
---
> shell                 <b>/bin/bash</b>
20c20
< shell_start_mode      posix_compliant
---
> shell_start_mode      <b>unix_behavior</b>
35,38c35,38
< s_rt                  INFINITY
< h_rt                  INFINITY
< s_cpu                 INFINITY
< h_cpu                 INFINITY
---
> s_rt                  48:00:00
> h_rt                  48:30:00
> s_cpu                 24:00:00
> h_cpu                 24:30:00
</pre> 

<span class=TFBB> qconf -sq all.q  </span>
%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
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<pre>
qname                 all.q
hostlist              @allhosts
seq_no                0
load_thresholds       np_load_avg=1.75
suspend_thresholds    NONE
nsuspend              1
suspend_interval      00:05:00
priority              0
min_cpu_interval      00:05:00
processors            UNDEFINED
qtype                 BATCH INTERACTIVE
ckpt_list             NONE
pe_list               make
rerun                 FALSE
slots                 1,[t3wn01=8],[t3wn02=8],[t3wn03=8]
tmpdir                /tmp
shell                 /bin/bash
prolog                NONE
epilog                NONE
shell_start_mode      unix_behavior
starter_method        %RED%/shome/sgeadmin/t3scripts/starter_method.sh %ENDCOLOR%
suspend_method        NONE
resume_method         NONE
terminate_method      NONE
notify                00:00:60
owner_list            NONE
user_lists            NONE
xuser_lists           NONE
subordinate_list      NONE
complex_values        NONE
projects              NONE
xprojects             NONE
calendar              NONE
initial_state         default
s_rt                  48:00:00
h_rt                  48:30:00
s_cpu                 24:00:00
h_cpu                 24:30:00
s_fsize               INFINITY
h_fsize               INFINITY
s_data                INFINITY
h_data                INFINITY
s_stack               INFINITY
h_stack               INFINITY
s_core                INFINITY
h_core                INFINITY
s_rss                 INFINITY
h_rss                 INFINITY
s_vmem                INFINITY
h_vmem                INFINITY
</pre>
%ENDTWISTY%  

---+++ Setting the queue's Grid/CMS Environment %N%

In order to set the correct Grid environment on the worker nodes, the default starter method of the queue is overridden by a simple script:

<pre %FILESTYLE%>
#!/bin/bash
######### STARTER METHOD FOR SETTING USER'S ENVIRONMENT #####################
# settings for Grid credentials
if test x"$DBG" != x; then
   echo "STARTER METHOD SCRIPT: Setting grid environment"
fi
source /swshare/glite/external/etc/profile.d/grid-env.sh
if test $? -ne 0; then
   echo "WARNING: Failed to source grid environment" >&2
fi

#source $VO_CMS_SW_DIR/cmsset_default.sh
#if test $? -ne 0; then
#   echo "WARNING: Failed to source the CMS environment ($VO_CMS_SW_DIR/cmsset_default.sh)" >&2
#fi

# now we execute the real job script
exec "$@"
</pre>

---+++ Printing out accounting information at the end of a job %N%

One can use the a queue's epilog setting to execute a script at the end of every job (use =qconf -mq=).

E.g. this script will attach some accounting information to the job's stdout (File =/shome/sgeadmin/t3scripts/epilog.sh=)
<pre %FILESTYLE%>
echo "# JOB Resource USAGE for job $JOB_ID:"
echo -n "# "
/swshare/sge/n1ge6/bin/lx24-amd64/qstat -j "$JOB_ID"| grep -e '^usage.*cpu='
</pre>

---+++ Configuring the scheduling policy %N%

The original configuration did no real fair share scheduling. After reading up a bit on how to implement share tree policies and seeing that this needs a lot of configuration and additional maintenance of user lists (I think), I decided to go for an easier [[https://lists.sdsc.edu/pipermail/npaci-rocks-discussion/2008-July/031927.html][functional policy as mentioned on a mailing list]].

Modify the master configuration
<pre>
# qconf -mconf

...
enforce_user                 auto
...
auto_user_fshare             100
...
</pre>

And then the scheduler configuration
<pre>
# qconf -msconf

...
weight_tickets_functional         10000
...
</pre>

The rationale for doing this is described as follows by an expert (Chris @ gridengine.info):

<pre>
If you are only using the functional policy in a way described by that
article than ...

- The number "10000" shown in that configuration suggestion is arbitrary
- Any number higher than zero simply "turns on" the policy within the scheduler
- The number of functional tickets you have does not matter all that much
- The *ratio* of tickets you hold vs. tickets others hold matters very very much
- No relation to halftime

In the simple functional setup described in that article the key is
that we (a) enable the functional policy by telling SGE there are
10000 tickets in the system and (b) we automatically assign every user
100 functional share tickets.

What makes the scheduling policy then become "fair" is the fact that
all users have the same number/ratio of functional share tickets
(100). This makes them all get treated equally by the scheduler.
</pre>

---+++ Configuring time dependent resource quota sets %N%

Resource quota sets:
   * Syntax
      * Multiple rule sets contain one or more rules
      * keywords: users, projects, queues (cluster queues), hosts, or pes (parallel environments)
   * First matching rule from each set wins
   * Strictest rule set wins
   * Rules can contain
      * Wildcard (*)
      * Logical not operator (!)
      * Brackets ({}): Means “apply this rule to each list member, singly” instead of to the group as a whole.

Example:
<pre>
{
   name         max_user_jobs_per_queue
   description  Limit a user to a maximal number of concurrent jobs in each \
   queue
   enabled      TRUE
   limit        users {*} queues all.q to slots=50
   limit        users {*} queues short.q to slots=80
}
{
   name         max_allq_jobs
   description  limit all.q to a maximal number of slots
   enabled      TRUE
   limit        queues all.q to slots=80
}
</pre>

The rules can be set/viewed with the usual SGE variations of the =qconf= command:
<pre>
qconf -srqs                 # show all the sets
qconf -srqs max_allq_jobs   # show a specific set
qconf -Mrqs file.rqs        # replace all sets by the ones found in file.rqs
qconf -mrqs                 # modify the existing sets in the editor
</pre>

*Time dependent resource quota sets:*
We implemented a change of the rules based on day, night, and weekend. This is controlled by a cron job in
=/etc/cron.d/change_sge_policies=

---++ Configure a parallel environment for SMP parallel jobs %N%

show all existing parallel environments
<pre>
qconf -spl
</pre>

Define a new parallel environment "smp"
<pre>
qconf -ap smp


pe_name           smp
slots             999
user_lists        NONE
xuser_lists       NONE
start_proc_args   /bin/true
stop_proc_args    /bin/true
allocation_rule   $pe_slots        # this forces all slots to be on the same host!
control_slaves    FALSE
job_is_first_task TRUE
urgency_slots     min
</pre>

Now, this environment must be added to all queues that should give access to it

<pre>
qconf -mq all.q

...
pe_list               smp make
...

</pre>


Users can submit jobs by using the =-pe= flag together with the environment name and the number of requested slots
<pre>
qsub -pe smp 4 myjob.sge
</pre>

---++ Limiting memory consumption on a per host basis %N%

The =h_vmem= complex property is the hard limit on job memory consumption. This is actually enforced by SGE, and a job will be killed when it tries ro allocate beyond this limit.
In order to do a correct bookkeeping for jobs already present on the node, it is necessary to declare this property to be a "consumable" property. Also, one should immediately assign a default value for jobs which do not explicitely declare the requirement.

This can be done by editing the complex configuration:
<pre>
qconf -mc

#name               shortcut   type        relop requestable consumable default  urgency
#----------------------------------------------------------------------------------------
...
h_vmem              h_vmem     MEMORY      <=    YES         YES        2.5g     0
...

</pre>

Now, one can assign explicit h_vmem limits to hosts using

<pre>
qconf -me t3wn04

hostname              t3wn04.psi.ch
load_scaling          NONE
complex_values        h_vmem=15g
user_lists            NONE
xuser_lists           NONE
projects              NONE
xprojects             NONE
usage_scaling         NONE
report_variables      NONE
</pre>

A user can now declare the requirement for the vmem in his submit statement
<pre>
qsub -l h_vmem=10g simple_env.sge
qsub -pe smp 4 -l h_vmem=2g simple_env.sge
</pre>
Note that the requirement is per requested slot, so in the latter case the required vmem is 8GB!

---
---+ SGE Basic Tests

---++  Available Queues and Slots

<pre>
<b>which qstat</b>
/swshare/sge/n1ge6/bin/lx24-amd64/qstat

# Queues and slots (see "man qstat" for details):  
<b>qstat -g c</b>
CLUSTER QUEUE                   CQLOAD   USED  AVAIL  TOTAL aoACDS  cdsuE  
-------------------------------------------------------------------------------
all.q                             0.00      0     16     16      0      0 


# Show the xecute hosts (only the installed hosts are shown):
<b>qconf -sel</b>
t3wn01
t3wn02
t3wn03

# Show the list of queues:
<b>qconf -sql</b>
all.q
</pre>

Show the admin hosts (see "man qconf" for details)   
<br>
<span class=TFBB> qconf -sh </span>
%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
showimgleft="%ICONURLPATH{viewtopic}%" hideimgleft="%ICONURLPATH{toggleclose-small}%"}%
<pre>
t3admin01
t3ce01
t3ui01
t3wn01
t3wn02
t3wn03
t3wn04
t3wn05
t3wn06
t3wn07
t3wn08
</pre>
%ENDTWISTY%  

Show the given execution host: 
<br>
<span class=TFBB> qconf -se t3wn01 </span> 
%TWISTY{showlink=" Show Output " hidelink=" Hide Output "
showimgleft="%ICONURLPATH{viewtopic}%" hideimgleft="%ICONURLPATH{toggleclose-small}%"}%
<pre>
hostname              t3wn01
load_scaling          NONE
complex_values        NONE
load_values           load_avg=0.000000,load_short=0.000000, \
                      load_medium=0.000000,load_long=0.000000,arch=lx24-amd64, \
                      num_proc=8,mem_free=15851.125000M, \
                      swap_free=1992.425781M,virtual_free=17843.550781M, \
                      mem_total=16033.703125M,swap_total=1992.425781M, \
                      virtual_total=18026.128906M,mem_used=182.578125M, \
                      swap_used=0.000000M,virtual_used=182.578125M, \
                      cpu=0.000000,np_load_avg=0.000000, \
                      np_load_short=0.000000,np_load_medium=0.000000, \
                      np_load_long=0.000000
processors            8
user_lists            NONE
xuser_lists           NONE
projects              NONE
xprojects             NONE
usage_scaling         NONE
report_variables      NONE
</pre>
%ENDTWISTY%  

Show the given queue: 
<br> 
<span class=TFBB> qconf -sq all.q </span> 
%TWISTY{showlink=" Show Output " hidelink=" Hide Output " 
showimgleft="%ICONURLPATH{viewtopic}%" hideimgleft="%ICONURLPATH{toggleclose-small}%"}%
<pre>
qname                 all.q
hostlist              @allhosts
seq_no                0
load_thresholds       np_load_avg=1.75
suspend_thresholds    NONE
nsuspend              1
suspend_interval      00:05:00
priority              0
min_cpu_interval      00:05:00
processors            UNDEFINED
qtype                 BATCH INTERACTIVE
ckpt_list             NONE
pe_list               make
rerun                 FALSE
slots                 1,[t3wn01=8],[t3wn02=8],[t3wn03=8]
tmpdir                /tmp
shell                 /bin/bash
prolog                NONE
epilog                NONE
shell_start_mode      unix_behavior
starter_method        NONE
suspend_method        NONE
resume_method         NONE
terminate_method      NONE
notify                00:00:60
owner_list            NONE
user_lists            NONE
xuser_lists           NONE
subordinate_list      NONE
complex_values        NONE
projects              NONE
xprojects             NONE
calendar              NONE
initial_state         default
s_rt                  48:00:00
h_rt                  48:30:00
s_cpu                 24:00:00
h_cpu                 24:30:00
s_fsize               INFINITY
h_fsize               INFINITY
s_data                INFINITY
h_data                INFINITY
s_stack               INFINITY
h_stack               INFINITY
s_core                INFINITY
h_core                INFINITY
s_rss                 INFINITY
h_rss                 INFINITY
s_vmem                INFINITY
h_vmem                INFINITY
</pre>
%ENDTWISTY%  


---
---++  Test Jobs

Use the *simple_env.sge* script to submit a simple single-CPU job: 
%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
showimgleft="%ICONURLPATH{viewtopic}%" hideimgleft="%ICONURLPATH{toggleclose-small}%"}%
<pre>
  <b>qsub ./simple_env.sge</b> 
Your job 2 ("simple_env") has been submitted
  
  qstat
job-ID  prior   name       user         state submit/start at     queue                          slots ja-task-ID 
-----------------------------------------------------------------------------------------------------------------
      2 0.00000 simple_env sgeadmin     qw    08/13/2008 14:12:44                                    1        
  
  qstat
job-ID  prior   name       user         state submit/start at     queue                          slots ja-task-ID 
-----------------------------------------------------------------------------------------------------------------
      2 0.55500 simple_env sgeadmin     r     08/13/2008 14:12:49 all.q@t3wn01                       1        

  ls -lA
    ... 
-rw-r--r--  1 sgeadmin sgeadmin 2245 Aug 13 14:12 simple_env.o2
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:12 simple_env.e2 
</pre>
%ENDTWISTY%  

<span class=TFBB> simple_env.sge </span>
%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
showimgleft="%ICONURLPATH{viewtopic}%" hideimgleft="%ICONURLPATH{toggleclose-small}%"}%
<pre> 
#!/bin/bash
# SGE single-CPU job example

### Job name
#$ -N simple_env

### Run time soft and hard limits hh:mm:ss
#$ -l s_rt=00:01:00,h_rt=00:01:30

### Change to the current working directory
#$ -cwd

MY_HOST=`hostname`
MY_DATE=`date`
echo "Running on $MY_HOST at $MY_DATE"
echo "Running environment:"
env
echo "================================================================"

# Put your single-CPU script here
################################################################################
</pre>
%ENDTWISTY%  


Use the *simple_job_array.sge* script to test a job array:  
%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
showimgleft="%ICONURLPATH{viewtopic}%" hideimgleft="%ICONURLPATH{toggleclose-small}%"}%
<pre>
  qsub  -q all.q  -t 1-16  ./simple_job_array.sge
Your job-array 3.1-16:1 ("simple_job_array") has been submitted
  
  qstat
job-ID  prior   name       user         state submit/start at     queue                          slots ja-task-ID 
-----------------------------------------------------------------------------------------------------------------
      3 0.55500 simple_job sgeadmin     r     08/13/2008 14:25:49 all.q@t3wn01                       1 16
  
   ls -lA  simple_job_array*
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.1
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.10
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.11
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.12
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.13
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.14
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.15
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.16
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.2
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.3
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.4
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.5
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.6
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.7
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.8
-rw-r--r--  1 sgeadmin sgeadmin    0 Aug 13 14:25 simple_job_array.e3.9
-rw-r--r--  1 sgeadmin sgeadmin  731 Aug 13 14:25 simple_job_array.o3.1
-rw-r--r--  1 sgeadmin sgeadmin  736 Aug 13 14:25 simple_job_array.o3.10
-rw-r--r--  1 sgeadmin sgeadmin  736 Aug 13 14:25 simple_job_array.o3.11
-rw-r--r--  1 sgeadmin sgeadmin  736 Aug 13 14:25 simple_job_array.o3.12
-rw-r--r--  1 sgeadmin sgeadmin  736 Aug 13 14:25 simple_job_array.o3.13
-rw-r--r--  1 sgeadmin sgeadmin  736 Aug 13 14:25 simple_job_array.o3.14
-rw-r--r--  1 sgeadmin sgeadmin  736 Aug 13 14:25 simple_job_array.o3.15
-rw-r--r--  1 sgeadmin sgeadmin  736 Aug 13 14:25 simple_job_array.o3.16
-rw-r--r--  1 sgeadmin sgeadmin  731 Aug 13 14:25 simple_job_array.o3.2
-rw-r--r--  1 sgeadmin sgeadmin  731 Aug 13 14:25 simple_job_array.o3.3
-rw-r--r--  1 sgeadmin sgeadmin  731 Aug 13 14:25 simple_job_array.o3.4
-rw-r--r--  1 sgeadmin sgeadmin  731 Aug 13 14:25 simple_job_array.o3.5
-rw-r--r--  1 sgeadmin sgeadmin  731 Aug 13 14:25 simple_job_array.o3.6
-rw-r--r--  1 sgeadmin sgeadmin  731 Aug 13 14:25 simple_job_array.o3.7
-rw-r--r--  1 sgeadmin sgeadmin  731 Aug 13 14:25 simple_job_array.o3.8
-rw-r--r--  1 sgeadmin sgeadmin  731 Aug 13 14:25 simple_job_array.o3.9
-rw-r--r--  1 sgeadmin sgeadmin  100 Aug 13 14:25 simple_job_array.out.3-1
-rw-r--r--  1 sgeadmin sgeadmin  101 Aug 13 14:25 simple_job_array.out.3-10
-rw-r--r--  1 sgeadmin sgeadmin  101 Aug 13 14:25 simple_job_array.out.3-11
-rw-r--r--  1 sgeadmin sgeadmin  101 Aug 13 14:25 simple_job_array.out.3-12
-rw-r--r--  1 sgeadmin sgeadmin  101 Aug 13 14:25 simple_job_array.out.3-13
-rw-r--r--  1 sgeadmin sgeadmin  101 Aug 13 14:25 simple_job_array.out.3-14
-rw-r--r--  1 sgeadmin sgeadmin  101 Aug 13 14:25 simple_job_array.out.3-15
-rw-r--r--  1 sgeadmin sgeadmin  101 Aug 13 14:25 simple_job_array.out.3-16
-rw-r--r--  1 sgeadmin sgeadmin  100 Aug 13 14:25 simple_job_array.out.3-2
-rw-r--r--  1 sgeadmin sgeadmin  100 Aug 13 14:25 simple_job_array.out.3-3
-rw-r--r--  1 sgeadmin sgeadmin  100 Aug 13 14:25 simple_job_array.out.3-4
-rw-r--r--  1 sgeadmin sgeadmin  100 Aug 13 14:25 simple_job_array.out.3-5
-rw-r--r--  1 sgeadmin sgeadmin  100 Aug 13 14:25 simple_job_array.out.3-6
-rw-r--r--  1 sgeadmin sgeadmin  100 Aug 13 14:25 simple_job_array.out.3-7
-rw-r--r--  1 sgeadmin sgeadmin  100 Aug 13 14:25 simple_job_array.out.3-8
-rw-r--r--  1 sgeadmin sgeadmin  100 Aug 13 14:25 simple_job_array.out.3-9

  grep  t3wn  simple_job_array.out.*
simple_job_array.out.3-1:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=1 on t3wn02 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-10:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=10 on t3wn01 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-11:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=11 on t3wn03 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-12:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=12 on t3wn02 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-13:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=13 on t3wn02 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-14:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=14 on t3wn03 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-15:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=15 on t3wn01 at Wed Aug 13 14:25:50 CEST 2008
simple_job_array.out.3-16:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=16 on t3wn01 at Wed Aug 13 14:25:50 CEST 2008
simple_job_array.out.3-2:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=2 on t3wn03 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-3:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=3 on t3wn01 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-4:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=4 on t3wn01 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-5:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=5 on t3wn03 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-6:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=6 on t3wn02 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-7:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=7 on t3wn02 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-8:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=8 on t3wn03 at Wed Aug 13 14:25:49 CEST 2008
simple_job_array.out.3-9:Running job JOB_NAME=simple_job_array task SGE_TASK_ID=9 on t3wn01 at Wed Aug 13 14:25:49 CEST 2008

</pre>
%ENDTWISTY%  

<span class=TFBB> simple_job_array.sge </span>
%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
showimgleft="%ICONURLPATH{viewtopic}%" hideimgleft="%ICONURLPATH{toggleclose-small}%"}%
<pre>
#!/bin/bash
# SGE single-CPU job array example
### Job name
#$ -N simple_job_array
### Run time soft and hard limits hh:mm:ss
#$ -l s_rt=00:01:00,h_rt=00:01:30
### Change to the current working directory
#$ -cwd
### Export some environment varaibles:
#$ -v MY_PREFIX=simple_job_array.out

MY_HOST=`hostname`
MY_DATE=`date`
cat <<EOF
 ================================================================"
  JOB_NAME=$JOB_NAME
  JOB_ID=$JOB_ID
  SGE_TASK_ID=$SGE_TASK_ID
  SGE_TASK_FIRST=$SGE_TASK_FIRST
  SGE_TASK_LAST=$SGE_TASK_LAST
  NSLOTS=$NSLOTS
  QUEUE=$QUEUE
  SGE_CWD_PATH=$SGE_CWD_PATH
  PATH=$PATH
  SGE_STDIN_PATH=$SGE_STDIN_PATH
  SGE_STDOUT_PATH=$SGE_STDOUT_PATH
  SGE_STDERR_PATH=$SGE_STDERR_PATH
  SGE_O_HOST=$SGE_O_HOST
  SGE_O_PATH=$SGE_O_PATH
  PE_HOSTFILE=$PE_HOSTFILE
 ================================================================
EOF
echo "Running job JOB_NAME=$JOB_NAME task SGE_TASK_ID=$SGE_TASK_ID on $MY_HOST at $MY_DATE" | tee ${MY_PREFIX}.${JOB_ID}-${SGE_TASK_ID}

# Put your single-CPU script here.  
# Each job in a job array has a unique task id $TASK_ID;
# the interval of task ids is defined by the "-t min-max" argument of qsub, .e.g.
# qsub  -q all.q  -t 1-16  ./simple_job_array.sge  
################################################################################
</pre>
%ENDTWISTY%  


---
---+  Bug Fixes

---+++ The directory =/etc/init.d= must be a link

Note: _Due to a glitch in the configuration management area (the management uses rsync from a config area) the =/etc/init.d= had been replaced by a real directory._

The directory =/etc/init.d= must be a link: =/etc/init.d -> rc.d/init.d= 
(strange things may start to happen if this is not the case).  
Fix it on t3ce01.  
<pre>
  [root@t3ce01 rc3.d]# 
  date
     Mon Aug 11 22:22:10 CEST 2008
  
  ls -lA /etc/init.d
    -rwxr-xr-x  1 root     root      1243 Aug 11 10:06 gmond
    -rwxr-xr-x  1 root     root      4210 Aug 11 09:58 ramdisk
    -rwxr-xr-x  1 sgeadmin sgeadmin 15679 Aug 11 17:47 sgemaster
  
  cp -a  /etc/init.d/sgemaster  /etc/rc.d/init.d/
  ls -lAtr /etc/rc.d/init.d/
    ...
    -rwxr-xr-x  1 root     root      4210 Aug 11 09:58 ramdisk
    -rwxr-xr-x  1 root     root      1243 Aug 11 10:06 gmond
    -rwxr-xr-x  1 sgeadmin sgeadmin 15679 Aug 11 17:47 sgemaster
  rm -rf /etc/init.d
  ln -s /etc/rc.d/init.d  /etc/init.d

  # Now chkconfig works as it should (it did not before): 
  chkconfig --add sgemaster
  chkconfig --list sgemaster
    sgemaster       0:off   1:off   2:off   3:on    4:off   5:on    6:off
</pre>


---
---+   Troubleshooting
---++  Installation Troubleshooting 

---+++  Missing output

The *inst_sge* script tries to hide its output (omitting my comments on its design), 
so that nothing may be printed on the console if the thing go wrong 
even if you uncomment the ="# set -x"= line.   If this happens check 
the file(s) =/tmp/install.NNNNN= for possible reasons, like 
=Command failed: mkdir -p /var/spool/sge/qmaster=. 

---+++ This is not a qmaster host!

On a start of the SGE master on t3ce01 I got this error message:
<pre>
/etc/init.d/sgemaster start

sge_qmaster didn't start!
This is not a qmaster host!
Please, check your act_qmaster file!
</pre>

Check what the =$SGE_ROOT/utilbin/lx24-amd64/gethostname= returns as hostname.
The entry in =$SGE_ROOT/$SGE_CELL/common/act_qmaster= must exactly match this name. In my (Derek's) case the hostname returned by the tool was =t3ce01.psi.ch=, while the file only contained t3ce01.

Afterwards I got the following message during startup:
<pre>
/etc/init.d/sgemaster start
   starting sge_qmaster
   starting sge_schedd
local configuration t3ce01.psi.ch not defined - using global configuration
starting up GE 6.1u4 (lx24-amd64)
</pre>
Taking a closer look at the startup with =strace= reveals that SGE is looking for an entry for t3ce01.psi.ch in the =$SGE_ROOT/$SGE_CELL/common/local_conf= directory. Since there had not been one for t3ce01 before, I ignored this.

---+++ "This hostname is not known at qmaster as an administrative host"

This message is written to the log file when you try to execute a command that 
can be run only on an admin host, e.g.   
%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
showimgleft="%ICONURLPATH{viewtopic}%" hideimgleft="%ICONURLPATH{toggleclose-small}%"}%
<pre>
<b> ./inst_sge -x -noremote -auto $SGE_ROOT/util/install_modules/tier3.conf</b>
Your $SGE_ROOT directory: /swshare/sge/n1ge6
Using cell: >tier3<
Installation  failed!
This hostname is not known at qmaster as an administrative host.
</pre>
%ENDTWISTY%  

Solution: login to any admin host add the new host to the admin hosts using 
the <b>qconf -ah </b> command.  
%TWISTY{showlink=" Show Details " hidelink=" Hide Details " 
showimgleft="%ICONURLPATH{viewtopic}%" hideimgleft="%ICONURLPATH{toggleclose-small}%"}%
<pre>
  export SGE_ROOT=/swshare/sge/n1ge6
  export SGE_CELL=tier3
  export PATH=$SGE_ROOT/bin/lx24-amd64:$PATH
  
  <b>qconf -ah t3wn01,t3wn02,t3wn03,t3wn04,t3wn05,t3wn06,t3wn07,t3wn08</b>
t3wn01 added to administrative host list
t3wn02 added to administrative host list
t3wn03 added to administrative host list
t3wn04 added to administrative host list
t3wn05 added to administrative host list
t3wn06 added to administrative host list
t3wn07 added to administrative host list
t3wn08 added to administrative host list
  
  qconf -sh
t3admin01
t3ce01
t3ui01
t3wn01
t3wn02
t3wn03
t3wn04
t3wn05
t3wn06
t3wn07
t3wn08
</pre>
You can add hosts even if they not available yet.   
%ENDTWISTY%  

---+++ "Local execd spool directory [undef] is not a valid path"

The reason must be investigated, but a work around is simple: 
create the corresponding directory manually. e.g.:
<pre>
  mkdir /var/spool/sge/t3wn01
  chown sgeadmin.root /var/spool/sge/t3wn01
</pre>

---+++ Installation Log Files

<span class=TFBB> ls -lA /swshare/sge/n1ge6/tier3/common/install_logs </span>
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<pre>
-rw-r--r--  1 sgeadmin sgeadmin   159 Aug 11 21:04 execd_install_t3wn01_2008-08-11_21:04:43.log
-rw-r--r--  1 sgeadmin sgeadmin   567 Aug 11 21:20 execd_install_t3wn01_2008-08-11_21:20:31.log
-rw-r--r--  1 sgeadmin sgeadmin 15249 Aug 11 21:24 execd_install_t3wn01_2008-08-11_21:24:51.log
-rw-r--r--  1 sgeadmin sgeadmin 15249 Aug 11 21:27 execd_install_t3wn01_2008-08-11_21:27:38.log
-rw-r--r--  1 sgeadmin sgeadmin 15117 Aug 11 21:30 execd_install_t3wn01_2008-08-11_21:30:50.log
-rw-r--r--  1 sgeadmin sgeadmin   707 Aug 11 21:31 execd_install_t3wn01_2008-08-11_21:31:00.log
-rw-r--r--  1 sgeadmin sgeadmin   443 Aug 11 21:57 execd_install_t3wn02_2008-08-11_21:57:48.log
-rw-r--r--  1 sgeadmin sgeadmin  3068 Aug 11 17:47 qmaster_install_t3ce01_2008-08-11_17:47:44.log

</pre>
%ENDTWISTY%  

---+++ Uninstalling Execution Hosts
*Note* -  Uninstall all compute hosts before you uninstall the master host. If you uninstall the master host first, you have to uninstall all execution hosts manually.

During the execution host uninstallation, all configuration information for the targeted hosts is deleted. The uninstallation attempts to stop the exec hosts in a graceful manner, then the execution daemon will be shut down, then the configuration, global spool directory or local spool directory will be removed. 

$SGE_ROOT/util/install_modules/tier3.conf has a section for identifying hosts that can be uninstalled automatically

<pre>
  # Remove this execution hosts in automatic mode 
  EXEC_HOST_LIST_RM="host1 host2 host3 host4"
</pre>

Every host in the EXEC_HOST_LIST_RM list will be automatically removed from the cluster.
To start the automatic uninstallation of execution hosts, type the following command:

<pre>
  ./inst_sge -ux -auto $SGE_ROOT/util/install_modules/tier3.conf
</pre>

For more information, please consult the page: http://docs.sun.com/app/docs/doc/820-0697/gesal?a=view

---++ Runtime Troubleshooting

---+++ Logfiles
The default log file for the master can be found in the master's spool area at =/var/spool/sge/qmaster/messages=.

---



---++ Settings 

   * This section contains a hidden (html) block where the local TWiki variables are set.   
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   * Set USERSTYLEURL = https://twiki.cscs.ch/twiki/pub/CmsTier3/SunGridEngine/my_twiki_styles.css
   * Set FCR=<font color="red">
   * Set FCG=<font color="green">
   * Set FCB=<font color="blue">
   * Set FCC=<font color="cyan">
   * Set FCV=<font color="violet">
   * Set FCK=<font color="black">
   * Set FE=</font>
-->


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 * [[%ATTACHURL%/my_twiki_styles.css][my_twiki_styles.css]]: My CSS
Attachments
Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
pdf	SGE-GeorgetownClass3.pdf	r1	manage	2839.9 K	2011-08-25 - 10:42	LeonardoSala	Useful talk about SGE administration
css	my_twiki_styles.css	r1	manage	1.9 K	2008-08-13 - 12:47	ValeriMarkushin	My CSS
Topic revision: r21 - 2011-10-10 - DerekFeichtinger
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