Difference between revisions of "35t Data"
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| + | ==<span style="background:yellow">This page has moved to the [https://wiki.dunescience.org/wiki/35ton DUNE wiki]</span>== | ||
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Data is available from the 35t Prototype Detector. | Data is available from the 35t Prototype Detector. | ||
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= Accessing Files = | = Accessing Files = | ||
| − | == XrootD = | + | == XrootD == |
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| + | PNFS (see below) paths may be accessed via Xrootd with URLs like: | ||
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| + | root://fndca1.fnal.gov:1094/pnfs/fnal.gov/usr/lbne/test-data/lbne/raw/00/18/90/51/lbne_r006837_sr01_20160112T213253.root | ||
| − | + | See the topic on [[XrootD]] for more information on this access mechanism. | |
== PNFS == | == PNFS == | ||
Latest revision as of 18:30, 8 December 2017
Contents
This page has moved to the DUNE wiki
Data is available from the 35t Prototype Detector.
Discovering Files
SAM
The "official" way to locate files is via SAM.
samweb -e lbne get-file-access-url lbne_r006837_sr01_20160112T213253.root
See the topic on SAM for more information.
Metadata Database
The conditions database contains some metadata about the files. Example code to access it can be found in this script in the duneutil package.
duneutil/dhtools/runsumdbquery.py 6837
Other
A possibly out of date generated file list:
http://dune-data.fnal.gov/data/35t/testfiles/filelist.txt
Accessing Files
XrootD
PNFS (see below) paths may be accessed via Xrootd with URLs like:
root://fndca1.fnal.gov:1094/pnfs/fnal.gov/usr/lbne/test-data/lbne/raw/00/18/90/51/lbne_r006837_sr01_20160112T213253.root
See the topic on XrootD for more information on this access mechanism.
PNFS
On FNAL computers, if you know the path to a file you can find it in PNFS file system like:
/pnfs/lbne/pnfs/fnal.gov/usr/lbne/test-data/lbne/raw/00/18/90/51/lbne_r006837_sr01_20160112T213253.root
See the topic on PNFS for more information about this resource.
Grid FTP
If you have Grid tools available, PNFS can be accessed. The above path turns into
gsiftp://fndca1.fnal.gov:2811/pnfs/fnal.gov/usr/lbne/test-data/lbne/raw/00/18/90/51/lbne_r006837_sr01_20160112T213253.root
See the topic GSIFTP for more information about Grid FTP.
In transit
Experts may log in as lbnedaq@lbne35t-gateway02 and check
/data/lbnedaq/data/transferred_files/
On that machine, files can be copied to PNFS can be used, eg at
/pnfs/lbne/persistent/users/bv
Contact Tom Junk or other FNAL computing experts if you need your Kerberos principle added in order to log in to the lbnedaq account.
Other sources
Michelle has some ad-hoc placements here
/pnfs/dune/persistent/users/mstancar/
Using Files
t.b.d.
