[Swift-devel] persistent coasters on OSG

[Mihael Hategan]

If you look through the service log, you see that all "lost connection
to worker" messages come from workers on nemo. That implies that
something is wrong there, but I can't tell what it is.

Perhaps enabling worker logging for workers on nemo might shed some
light on the issue.

On Tue, 2011-08-23 at 14:17 -0500, Michael Wilde wrote:
> Can you describe what you are seeing on Nemo and what to look for there?
> 
> - Mike
> 
> ----- Original Message -----
> > From: "Mihael Hategan" <hategan at mcs.anl.gov>
> > To: "Ketan Maheshwari" <ketancmaheshwari at gmail.com>
> > Cc: "Swift Devel" <swift-devel at ci.uchicago.edu>
> > Sent: Tuesday, August 23, 2011 2:15:03 PM
> > Subject: Re: [Swift-devel] persistent coasters on OSG
> > It looks like workers on nemo are somehow messed up. Can you find out
> > why?
> > 
> > On Mon, 2011-08-22 at 13:45 -0500, Ketan Maheshwari wrote:
> > > Hi Mihael, All,
> > >
> > >
> > > I am trying to test the persistent coasters setup with OSG sites
> > > from
> > > communicado and see some intermittent exceptions/ jobs failed errors
> > > which eventually succeed on retries.
> > >
> > >
> > > The exceptions I see from the log are mostly low-level network
> > > exceptions: (Channel Exceptions, Broken Pipe SocketExceptions,
> > > Timeout, etc.).
> > >
> > >
> > > The runs that I tried were incremental catsn runs with n=1,10,50 and
> > > 100 and data.txt=100MB and 200MB.
> > >
> > >
> > > The only run that had the above mentioned errors were the ones with
> > > n=100 and data.txt=200MB.
> > >
> > >
> > > The other runs completed without any errors.
> > >
> > >
> > > I used just one OSG site for these runs.
> > >
> > >
> > > Attaching the sites, log files and a file that contains exception
> > > messages grepped from log files.
> > >
> > >
> > > Any clues as to harden this, I had about 5 errors on today's run and
> > > about 11 on a similar run last week.
> > >
> > >
> > >
> > >
> > > Regards,
> > > --
> > > Ketan
> > >
> > >
> > >
> > 
> > 
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