[gridengine users] what is IO in qstat

Dave Love d.love at liverpool.ac.uk
Sun Mar 24 21:50:02 UTC 2013

Reuti <reuti at staff.uni-marburg.de> writes:

> Hi,
> Am 20.03.2013 um 15:58 schrieb Lars van der bijl:
>> hey everyone,
>> a few weeks ago we where having issue with users submitting jobs the
>> did massive IO to the file system. each task was writing out about 4
>> GB of data and reading in about 2GB. as this was happening in
>> parallel from our farm it brought our server to it knee's and cause
>> people to moan like crazy.

Ensure the (network file?) server is tuned properly.  We cope with array
jobs doing that sort of thing to NFS.

>> I'm I right in thinking that the IO output of a job would help me
>> detect the tasks disk IO?

Local or networked?

>> I can't seem to find any good information on what the qstat IO output
>> means. I remember seeing that it has something to do with Gb/s ?

It should be labelled "GB".

> In case you refer to the field which is also listed in `qacct -j
> <jobid>`:

[I.e. cross-referenced from qstat(1).  It probably needs better
explanation of other bits of output.]

> `man accouting`
> http://arc.liv.ac.uk/SGE/htmlman/htmlman5/accounting.html

Community Grid Engine:  http://arc.liv.ac.uk/SGE/

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