Latest revision as of 12:23, 22 August 2019

Postdoctoral researcher at Stony Brook University these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words these are filler words

Something useful

How to copy raw data files from tape

(email from Brad Sawatzky)
Do not use 'jget' -- that makes a copy to an arbitrary file system (kind
of like 'cp' on regular files).


You want to use 'jcache get ...' which will have the system pull the
file to /cache/hallc/spring17/raw/ as you wish.  Run 'jcache -h'
to get some help text and/or the online docs here:
https://scicomp.jlab.org/docs/%20 


So, something like this should work:
jcache get /mss/hallc/spring17/raw/shms_all_02895.dat
The file will show up here as soon as a tape drive is ready to pull the
run (can be anywhere from minutes to 24 hours depending on load).
/cache/hallc/spring17/raw/shms_all_02895.dat 


Wildcards work too:
 jcache get /mss/hallc/spring17/raw/shms_all_028*.dat
(But be careful, don't do 'jcache get /mss/hallc/spring17/raw/*' :-)

You can find the status of your request from: https://scicomp.jlab.org/scicomp/index.html#/cache/request

Example for PREX counting daq data:

ifarm1402.jlab.org> jcache get /mss/halla/happexsp/raw/prexRHRS_20982.dat.0
get request: 21382881
status: pending
/cache/halla/happexsp/raw/prexRHRS_20982.dat.0 -> pending

• Brad's CH Tips and Tricks [1]

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