[d2n-analysis-talk] Working on a common set of ROOT files [ was Re: Work Disk Metrics ]

[Brad Sawatzky]

First off, I appreciate Dave's heads-up to the group.  Very good
practice.

I think files that are of common use should be transfered to the
d2n.jlab.org space.  I was under the impression that we were doing this
already, with the exception of test runs to verify DB updates, etc.

I would think that everyone should be using a common set of skimmed ROOT
files for almost all of their work.  If things have diverged, then we
need to verify that the farm scripts are all up to date (and tested!),
then do a full replay.

-- Brad

On Thu, 24 Feb 2011, David Flay wrote:

> The first round of the LHRS farm replay uses 392 GB.
> 
> Our work disk has the following metrics:
> 
> Filesystem            Size  Used Avail Use% Mounted on
> sfs66:/export/halla/e06014
>                       2.0T  1.1T  974G  53% /w/halla/e06014
> 
> I bring this up because I plan on starting a skimming job within the next
> few days on this replayed data (data quality checks out fine for this
> replay).  In which case, the skim procedure will utilize an extra 392 GB
> of space, leaving 582 GB free.  I just wanted to see if this was OK -- I
> wouldn't want to take up too much space from others.
> 
> Please let me know if you have any objections.
> 
> Thanks,
> 
> Dave
> 
> PS -- I have already transferred the farm replayed ROOTfiles to my machine
> at Temple; therefore, if you would like me to remove them upon finishing
> the skimming procedure (to make room for your jobs), this will not be an
> issue.

-- 
Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
The most exciting phrase to hear in science, the one that heralds new
  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov