Difference between revisions of "Quick Guide to Dirac"
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Note 1: The 'gridpp' in the command above does not refer to the gridpp VO - please use the command as is, independently of which VO you will use later on." | Note 1: The 'gridpp' in the command above does not refer to the gridpp VO - please use the command as is, independently of which VO you will use later on." | ||
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= Configure the client = | = Configure the client = | ||
Revision as of 07:49, 19 July 2014
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Contents
Introduction
This document describes how to quickly set up a simple Dirac client, create a job script and then submit it to a Dirac server for execution. For more help or further information on this topic, please contact janusz.martyniak@imperial.ac.uk
Server URL
The Dirac server is installed at Imperial College. The Web interface is at:
https://dirac.grid.hep.ph.ic.ac.uk:8443
You need a certificate installed in your browser.
Dirac client installation
mkdir dirac cd dirac wget -np -O dirac-install http://lhcbproject.web.cern.ch/lhcbproject/dist/Dirac_project/dirac-install chmod +x dirac-install ./dirac-install -V gridpp -r v6r11p3 source bashrc
Note 1: The 'gridpp' in the command above does not refer to the gridpp VO - please use the command as is, independently of which VO you will use later on."
Note 2: The version (v6r11p3) should match the version given at the bottom of the GridPP DIRAC portal web pages. CHECK THIS BEFORE CREATING A NEW DiRAC CLIENT.
Configure the client
Create a dumb, groupless proxy (mind -x). This option is to be used only when configuring the client.
Have your keys in .globus/ and the CA certs in /etc/grid-security
Make a proxy.
$ dirac-proxy-init -x Generating proxy... Enter Certificate password: Proxy generated: subject : /C=UK/O=eScience/OU=Imperial/L=Physics/CN=janusz martyniak/CN=proxy issuer : /C=UK/O=eScience/OU=Imperial/L=Physics/CN=janusz martyniak identity : /C=UK/O=eScience/OU=Imperial/L=Physics/CN=janusz martyniak timeleft : 23:59:59 path : /tmp/x509up_u500 username : unknown properties :
Configure defaults.
$ dirac-configure defaults-gridpp.cfg Executing: /tmp/dirac/DIRAC/Core/scripts/dirac-configure.py defaults-gridpp.cfg Checking DIRAC installation at "/tmp/dirac"
Special comand for admin users:
$ dirac-proxy-init -g dirac_admin Generating proxy... Enter Certificate password: Proxy generated: subject : /C=UK/O=eScience/OU=Imperial/L=Physics/CN=janusz martyniak/CN=proxy issuer : /C=UK/O=eScience/OU=Imperial/L=Physics/CN=janusz martyniak identity : /C=UK/O=eScience/OU=Imperial/L=Physics/CN=janusz martyniak timeleft : 23:59:59 DIRAC group : dirac_admin path : /tmp/x509up_u500 username : martynia properties : AlarmsManagement, ServiceAdministrator, CSAdministrator, JobAdministrator, FullDelegation, ProxyManagement, Operator
Create a proxy for a community
To be able to submit a job, you need to be a member of a community (VO), here gridpp. If you are, you can create a proxy:
$ dirac-proxy-init -g gridpp_user Generating proxy... Enter Certificate password: Uploading proxy for gridpp_user... Proxy generated: subject : /C=UK/O=eScience/OU=Imperial/L=Physics/CN=janusz martyniak/CN=proxy issuer : /C=UK/O=eScience/OU=Imperial/L=Physics/CN=janusz martyniak identity : /C=UK/O=eScience/OU=Imperial/L=Physics/CN=janusz martyniak timeleft : 23:59:58 DIRAC group : gridpp_user path : /tmp/x509up_u500 username : martynia properties : NormalUser
You can easily verify what VOs you are a member of, by going to the Dirac website and clicking at the drop-down menu at the bottom right, next to your username@ text. If your username shows "Anonymous" it means that you are not registered as a Dirac user. Please contact janusz.martyniak at imperial.ac.uk. Other VOs: vo.londongrid.ac.uk: use 'londongrid_user'.
Create a JDL
Now we are ready to create a simple Dirac jdl. Put the lines below into a file Simple.jdl:
[
JobName = "Simple_Job";
Executable = "/bin/ls";
Arguments = "-ltr";
StdOutput = "StdOut";
StdError = "StdErr";
OutputSandbox = {"StdOut","StdErr"};
]
Submit a job
$ dirac-wms-job-submit Simple.jdl JobID = 236
Check job status:
$ dirac-wms-job-status 236 JobID=236 Status=Waiting; MinorStatus=Pilot Agent Submission; Site=ANY
and eventually:
$ dirac-wms-job-status 236 JobID=236 Status=Done; MinorStatus=Execution Complete; Site=LCG.Glasgow.uk;
The jobs can also be monitored using the Web interface. Go to Jobs ->Job monitor You can also submit a job using the Web interface (Tools->Job Launchpad).
