PBS
Pro – Portable Batch System – Professional. It is responsible for
1)Job
scheduling.
2)Resource
Management.
3)Super
Computer Optimization.
pbs_sched
& pbs_server it will run on master node.
[root@master
~]#ps -ef | grep pbs
root
16714 1 0 Sep17 ? 00:00:40
/usr/pbs/default/sbin/pbs_sched
root
16716 1 0 Sep17 ? 00:00:27
/usr/pbs/default/sbin/pbs_server
Scheduler
– It will interact with various MOM to query system resource and
learn about the availability of job to execute.
pbs_mom
run on compute node.
[root@node1
~]# ps -ef | grep --color pbs
root
8204 1 0 Jun29 ? 00:03:59
/usr/pbs/default/sbin/pbs_mom
MOM
1)Mother
of all execution Job.
2)It
will run on the all the client nodes.
3)MOM
is also responsible to return the Job output to the user.
PBS
_ Script File Example
1)
#!/bin/bash (or) #!/bin/tcsh
|
|
2)
#PBS
|
-l
define the resource ( Node, PPN, Memory )
|
-e
error_flie -o output_file
|
|
-N
Job_Name
|
|
-m
abcn (MAIL Events), -M mail-id
|
|
-q
queue
|
|
3)
MPI Programming Command.
|
export
variable-path
|
cd
Directory-Path
|
|
mpirun
-np X -machinefile Y program-name
|
|
Example
:
#PBS -l nodes=2:ppn=2,pmem=1gb,walltime=1:00:00
#PBS -m abe
Email me when the job aborts, begins, and ends. N FOR DON'T MAIL.
NOTE
1) Job scheduler not only mpi. it is ready to run any program
ordinary shell script itself.
PBS
pro is “pro” version of the Open PBS.
PBS_SCRIPT
FILE EXAMPLE
PBS
Command
#qstat
-q
|
Job
Queue Status
|
|
#qstat
-Q
|
Available
queue.
|
|
#qstat
-a
|
-a
List all the Job | -au specified USER-ID List job
|
|
-r
Running Job
|
||
-s
Status
|
||
-B
Summary Information about PBS server
|
||
-f
Detail Information about job.
|
||
#qhold
|
Put
the job on hold
|
|
#qrls
|
Release
a job
|
|
#qsig
|
Send
Signal to job
|
|
#qdel
|
Delete
job.
|
|
#qsub
-q queue-name script-file
|
Submit
the job
|
|
#pbs
-j eo
|
Output
and error redirection
o-
output e – error
|
|
Job
status Signal
|
Q
Queue
|
R
– Running
|
E-
Ending
|
H
– Hold Job
|
|
#pbsnodes
|
-
a list all the nodes
|
|
-l
list of nodes currently offline.
|
||
How
To Get the Master and Client Server Communication LOG File.
/var/spool/PBS/server_logs
#pbsnodes
<HOST-Name> To Get the Detailed Information about the
particular Node.
1)Get
pbs_version,
2)state
whether is it [ free | job-busy | state-unknown,down,offline ]
3)no
of CPU
4)what
are the jobs are running.
[root@master
~]# pbsnodes node1
node1
Mom =
node1.niper.in
Port =
15002
pbs_version
= PBSPro_10.0.0.82981
ntype =
PBS
state =
job-busy
pcpus = 8
jobs =
32606.master/0, 32606.master/1, 32606.master/2, 32606.master/3,
32687.master/4, 32687.master/5, 32687.master/6, 32687.master/7
resources_available.amber
= 0
resources_available.arch
= linux
resources_available.cpmd
= 8
resources_available.gaussian
= 8
resources_available.gromacs
= 0
resources_available.host
= node1
resources_available.matlab
= 0
resources_available.mem
= 32830976kb
resources_available.namd
= 0
resources_available.ncpus
= 8
resources_available.software
= MATLAB_Distrib_Comp_Engine:5
resources_available.vnode
= node1
resources_assigned.amber
= 0
resources_assigned.cpmd
= 0
resources_assigned.fred2
= 0
resources_assigned.gaussian
= 8
resources_assigned.glide
= 0
resources_assigned.gromacs
= 0
resources_assigned.impact
= 0
resources_assigned.jaguar
= 0
resources_assigned.ligprep
= 0
resources_assigned.matlab
= 0
resources_assigned.mem
= 30720000kb
resources_assigned.namd
= 0
resources_assigned.ncpus
= 8
resources_assigned.qikprop
= 0
resources_assigned.vasp
= 0
resources_assigned.vmem
= 0kb
resv_enable
= True
sharing =
default_shared
USEFUL
LINKS
PBS_SCRIPT
FILE EXAMPLE
