MCOutputs < NA62

---+ Retrieving MC output

Outputs from Monte Carlo simulation are stored on disk at RAL and CERN. This page explains how to access this data.

%TOC%

---++ CERN CASTOR

MC production data is transferred to CERN CASTOR via
<verbatim>
srm://srm-public.cern.ch:8443/srm/managerv2
</verbatim>
and accessible locally on
<verbatim>
/castor/cern.ch/grid/na62/mc
</verbatim>
e.g.
<verbatim>
lxplus> nsls /castor/cern.ch/grid/na62/mc
prod
protopop
test
</verbatim>

---++ Other replicas

To find replicas for a given file, consult [[https://na62.gla.ac.uk/index.php?task=files][this table]]. Each expanded row will show the following information:
  
<img src="%PUBURLPATH%/%WEB%/%TOPIC%/file.png" alt="file.png" width="801" height="159" />

To find other replicas, use the commands
<verbatim>
export LFC_HOST="lfc00.grid.hep.ph.ic.ac.uk"
lcg-lr LFN
</verbatim>
where LFN is something that look like this =lfn:/grid/na62.vo.gridpp.ac.uk/prod/v0.9.0/Kch2pienu-2/pluto_v14_r27792.root= (see above).

%X% Please note that LFC will soon be deprecated and this might not work for long.

---++ Retrieving a file from a remote SE

If you have the LFN or the SRM of a file, the you can use =lcg-cp= to copy it to your local machine, e.g.
<verbatim>
lcg-cp -v srm://svr018.gla.scotgrid.ac.uk/dpm/gla.scotgrid.ac.uk/home/na62.vo.gridpp.ac.uk/prod/r722/Kch2pipi0pi0/pluto_v13_r27584.root ./pluto_v13_r27584.root
lcg-cp -v lfn:/grid/na62.vo.gridpp.ac.uk/prod/v0.9.0/Kch2pienu-2/pluto_v14_r27792.root pluto_v14_r27792.root
</verbatim>

Please remember that in order to use the above grid commands, you must have a valid proxy. To create one, do
<verbatim>
voms-proxy-init  -voms na62.vo.gridpp.ac.uk
</verbatim>
assuming you have a valid grid certificate (i.e. files =usercert.pem= and =userkey.pem= in =~/.globus/=).

If you see the error message
<verbatim>
VOMS server for VO na62.vo.gridpp.ac.uk is not known! Check your vomses configuration.
</verbatim>
then you need to add the NA62 VO to your vomses configuration:
<verbatim>
lxplus> ls ~/.glite/vomses
na62.vo.gridpp.ac.uk-voms02.gridpp.ac.uk  na62.vo.gridpp.ac.uk-voms03.gridpp.ac.uk  na62.vo.gridpp.ac.uk-voms.gridpp.ac.uk

lxplus> cat ~/.glite/vomses/na62.vo.gridpp.ac.uk-voms*
"na62.vo.gridpp.ac.uk" "voms02.gridpp.ac.uk" "15501" "/C=UK/O=eScience/OU=Oxford/L=OeSC/CN=voms02.gridpp.ac.uk" "na62.vo.gridpp.ac.uk"
"na62.vo.gridpp.ac.uk" "voms03.gridpp.ac.uk" "15501" "/C=UK/O=eScience/OU=Imperial/L=Physics/CN=voms03.gridpp.ac.uk" "na62.vo.gridpp.ac.uk"
"na62.vo.gridpp.ac.uk" "voms.gridpp.ac.uk" "15501" "/C=UK/O=eScience/OU=Manchester/L=HEP/CN=voms.gridpp.ac.uk" "na62.vo.gridpp.ac.uk"
</verbatim>

With this setup, =voms-proxy-init  -voms na62.vo.gridpp.ac.uk= should work. If not, please contact the grid admin.
Attachments
Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
png	file.png	r1	manage	56.5 K	2016-03-15 - 10:31	DanProtopopescu	A row in the 'files' table
This topic: NA62 > WebHome > MCOutputs
Topic revision: r1 - 2016-03-15 - DanProtopopescu