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When threshold is exceeded, no new jobs are placed on host. Essentially it is the signal that the host is busy as determined by uptime
Can use iether built-in values or values reported by custom load sensors (example: ‘logged-in-users=5’).
Default value
np_load_avg=1.75
lead to oversubscription of computational tasks. In many cases lower threshold such as 0.75 might be better.
Similar to load_threshold but running jobs will actually be suspended/stopped. The ‘nsuspend’ param determines how many jobs per interval get suspend signals.
‘suspend_interval’ defaults to 00:05:00.
What parallel environment (PE) objects this queue supports. See SGE Parallel Environment
It an be defined iether:
slots 20
slots 1,[b08=4],[b09=4]
In the latter case, the first number (1 in the example above) is the default allocation of slots, if number of slots that is assigned to the job, if number of slot is not explicitly requested in qsub command.
Numbers for each host specify maximum number of slots available on the particular host.
Trivial epilog usage:
#!/bin/sh # Simple epilog script
JOB_EXIT_STATUS="`sed -ne 's/^exit_status=//p'\
$SGE_JOB_SPOOL_DIR/usage | tail -1`"
echo "--------" echo "Job exited code: $JOB_EXIT_STATUS"
echo "--------"
Trivial epilog usage - II … STARVEDETECT="`grep -c "Licensed number of users already reached” \ $SGE_O_WORKDIR/*.log `" if [ $STARVEDETECT -gt 0 ] then echo "License Error Pattern Detected in Output!" /bin/tcsh -c "cd $SGE_O_WORKDIR; \ /cl/sw/bin/restart-failed-job.pl " else echo "No problems detected" fi …
How to configure different prolog scripts for different hosts or host groups (2014-03-03)Daniel's Blog about Grid Engine
When configuring Grid Engine a good tuning point is always to reduce the amount of queues (i.e. queue instances). When having a need for different machine type specific prolog and epilog scripts (for different heath-check for example) this does not require to configure multiple queues containing different prolog and epilog scripts. Instead you can configure them in the same queue using the bracket notation where you can define settings for queue instances (a queue setting for a host) and queue domains (a queue setting for a hostgroup).
I‘ve configured two additional host groups: @centos and @suse11 for which I want to have different prolog scripts running before a job is started.
qconf -shgrpl @allhosts @centos @suse11
My prolog scripts just printing out something on stdout.
cat /nfs/prolog_cent.sh #!/bin/sh echo "I'm a CentOS box"
cat /nfs/prolog_suse.sh #!/bin/sh echo "I'm a SUSE box"
Now we can add those two prolog scripts in the prolog configuration of one queue. Here for the host-group @centos the /nfs/prolog_cent.sh script is set. The prolog for host-group @suse11 is set respectively(of course you can also just use an host name instead of a hostgroup).
qconf -mattr queue prolog "NONE,[@centos=/nfs/prolog_cent.sh],[@suse11=/nfs/prolog_suse.sh]" all.q daniel@mint14 modified "all.q" in cluster queue list
Now verify that the queue configuration was set in the right way.
qconf -sq all.q | grep prolog
prolog NONE,[@centos=/nfs prolog_cent.sh], \
[@suse11=/nfs/prolog_suse.sh]
Finally we submit two jobs to two different hostgroups (i.e. here queue domains since the job is required to run in all.q).
qsub -b y -q all.q@@suse11 /bin/sleep 0
Your job 8 ("sleep") has been submitted
qsub -b y -q all.q@@centos /bin/sleep 0
Your job 9 ("sleep") has been submitted
Now check the job output file. It must contain the prolog output.
cat /home/daniel/sleep.o9 I'm a CentOS box cat /home/daniel/sleep.o8 I'm a SUSE box
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2014-03-03 | Daniel's Blog about Grid Engine
When configuring Grid Engine a good tuning point is always to reduce the amount of queues (i.e. queue instances). When having a need for different machine type specific prolog and epilog scripts (for different heath-check for example) this does not require to configure multiple queues containing different prolog and epilog scripts. Instead you can configure them in the same queue using the bracket notation where you can define settings for queue instances (a queue setting for a host) and queue domains (a queue setting for a hostgroup).
Here is an example of how to configure different prolog scripts for different host groupsI've configured two additional host groups: @centos and @suse11 for which I want to have different prolog scripts running before a job is started.
qconf -shgrpl @allhosts @centos @suse11My prolog scripts just printing out something on stdout.
cat /nfs/prolog_cent.sh #!/bin/sh echo "I'm a CentOS box" cat /nfs/prolog_suse.sh #!/bin/sh echo "I'm a SUSE box"Now we can add those two prolog scripts in the prolog configuration of one queue. Here for the host-group @centos the /nfs/prolog_cent.sh script is set. The prolog for host-group @suse11 is set respectively (of course you can also just use an host name instead of a hostgroup).
qconf -mattr queue prolog "NONE,[@centos=/nfs/prolog_cent.sh],[@suse11=/nfs/prolog_suse.sh]" all.q daniel@mint14 modified "all.q" in cluster queue listNow verify that the queue configuration was set in the right way.
qconf -sq all.q | grep prolog prolog NONE,[@centos=/nfs prolog_cent.sh], \ [@suse11=/nfs/prolog_suse.sh]Finally we submit two jobs to two different hostgroups (i.e. here queue domains since the job is required to run in all.q).
qsub -b y -q all.q@@suse11 /bin/sleep 0 Your job 8 ("sleep") has been submitted qsub -b y -q all.q@@centos /bin/sleep 0 Your job 9 ("sleep") has been submittedNow check the job output file. It must contain the prolog output.
cat /home/daniel/sleep.o9 I'm a CentOS box cat /home/daniel/sleep.o8 I'm a SUSE box
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