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FermilabdCache

​Using touch to modifiy the date stamps on files in the dCache
scratch area is not enough to update the
use date.  I think you have to open the files but we can test this,
though a test will take a while (1 month).

Fermilabgeneral

​fermiprint.fnal.gov is unavailable to computers on the eduroam
wireless network.  host fermiprint.fnal.gov returns ";; connection timed out; no servers could be reached" on a mac on eduroam, and Firefox emitted "Server not found -- Firefox can't find the server at fermiprint.fnal.gov"  printing may still work, but users cannot add printers.

Fermilabgrid jobs

​When you submit jobs and use the --memory option you can give units in both MB and GB. jobsub_submit interprets 1 GB as 1024 MB, not 1000 MB. So --memory=2GB is equivalent to --memory=2048MB, not 2000MB.

Fermilabgrid

​We have a 16-core build node, dunebuild01

Fermilabgrid

​Remember : DUNE resources are for DUNE work and not other experiments.

Fermilabgrid jobs

​You are more likely to get a grid slot for your job if you request the lifetime you actually need. This will be enforced in early summer 2016.

Fermilabgrid

​The LBNE Dropbox is dead!! Long live the DUNE Dropbox!! (used for uploading files to enstore and registering with SAM)

Fermilabgrid jobs

​Are priority numbers comparable across experiments?

  • If two different exps have same priority (a tie) – there is a tie-breaking mechanism. Otherwise are the same.
Fermilabgrid jobs

​How are resources determined between experiments? Jobs running at a given moment – tune priority factors, and relaxation factor)

  • Priority factor of accounting group: per user
    • How many jobs are running, how many running recently (past 1.5 days approx.)
    • Only changed when user asks.  Default to start with is same for all.
  • Relaxation factor : is global
Fermilabgrid jobs

​How do priorities affect grid job startup?

  • Lower priority numbers are better.  Assuming resource matching. Lowest priority wins. Exponential relaxation time.
Fermilabgrid jobs

​Jobs that run past their resource limits get held, not killed (do jobsub_q to see reason why). Understand why, kill jobs and resubmit.

Fermilabgrid

​DELETE your files before you leave DUNE/no longer have access to these areas

Fermilabgrid

​Use the grid file systems as follows –

  • /dune/app : mounted on the gpgrid nodes, but not on OSG, code development and installation – WILL BE IMPLEMENTING 100 GB/user QUOTA END of MAY 2016
  • /dune/data/users : interactive data files (not mounted on grid worker nodes : use ifdh cp on worker nodes to copy files to here)
  • /dune/data2/users : interactive data files (not mounted on grid worker nodes : use ifdh cp on worker nodes to copy files to here)
  • /pnfs/dune/scratch/users : dCache data files
  • /pnfs/dune/persistent/users : dCache data files
FermilabdCache

​There is more dCache monitoring then you can shake a stick at.

FermilabdCache

​dCache ‘mv’ gotcha – if you ’mv’ a file from one pool type to another, it will retain the behavior of the origianl pool type. Use ‘cp’ in order to change file types.

FermilabdCache

​Read/Write dCache pool files DO end up on tape. Least recently used file is deleted first (usually there is no to very little space available here)

FermilabdCache

​Scratch dCache pool files do NOT end up on tape. dCache tries to keep scratch files for at least 30 days.  Least recently used file is deleted first. No quotas.

FermilabdCache

​Persistent (analysis) dCache pool files do NOT end up on tape. These files are experiment controlled and will use pool space until explicitly deleted.  This area does fill up, we may need quotas.

FermilabdCache

​Use dCache for storing/reading big files – eventually blue arc will not be available from the worker nodes.

CERNgeneral

​ If you need a CERN account – see Maxine

Fermilabgeneral

​TotalView debugger being replaced by Allinea Forge debugger. Documentation coming.

Fermilabgeneral

​AFS – FNAL Computing working on deploying basically empty .bashrc and .bash_profile files

Fermilabgeneral

​How do I open a ticket when I have a problem with Fermilab related items? Go to servicedesk.fnal.gov and the Scientific Computing Services selection on the left hand side.

Allcertificates

​FYI: CILogon certificate DNs remove your middle initial.

Fermilabcertificates

​KCA certificates will be officially decommissioned September 30. Moving to using CILogon certificates. (Digicert is going away too!!)

Fermilabgeneral

​Fermilab Facility outages can be found here http://fop.fnal.gov/outages.html

Fermilabgeneral, certificates, grid

Distributed Computing Access with Federated Identities (DCAFI) DUNE transition will be June 27 – July 11 : job submission without using Kerberos

LArSoft

LArSoft Usability Workshop is on June 22-23

AllFIFE

FIFEMON has cool new monitoring (use services uname/pw)

FermilabFIFE

FIFE Workshop will be held at Fermilab on June 20-21 (Readytalk will be available)

Fermilabgeneral

​Fermilab will support EDUROAM (starting May 16) to gain access to the Fermilab network and you can use your Fermilab Services account to log in to the EDUROAM network at remote institutions