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GENIUS Tutorial: Grid Authentication and Job Submission Workshop

Join us for a hands-on tutorial on using the GENIUS platform for Grid computing. This workshop, organized by Vanessa Hamar at Universidad de Los Andes, Lima, Peru, covers essential topics including user authentication, job submission, and resource management in GRID environments. Participants will learn through practical exercises, from logging in to submitting jobs described in JDL files. The tutorial is based on materials from the EGEE and EELA projects, making it a valuable experience for anyone interested in Grid technologies.

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GENIUS Tutorial: Grid Authentication and Job Submission Workshop

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  1. GENIUS Hands On Vanessa Hamar Universidad de Los Andes Lima-Peru, 24 – 28 September 2007

  2. Disclaimer • This presentation is based on materials provided and authorized by the EGEE project and EELA project. It is freely available to download and use.

  3. Practical information GENIUS Tutorial website: • https://glite-tutor.ct.infn.it Tutorial accounts on glite-tutor: • Username: limaXX where XX goes from 01 to 40 • Password: GridLIMXX where XX goes from 01 to 40 when issuing the myproxy-init command • Myproxy password: LIMAPERU for all the accounts

  4. Introduction: 2 Authentications • 1. Authentication with the User Interface • 2. Authentication to the Grid. limaXX Input password of the user account: GridLIMXX limaXX Input password of the proxy (specified when you shall execute myproxy-init)

  5. First Exercise GENIUS logging in and base settings

  6. Outline of the exercise 1/2 • Login at your UI account (passwd: GridLIMXX) • Store a proxy on a remote Myproxy Server machine with the command (using the passphrase LIMA): $myproxy-init --voms gilda • Test to retrieve a local proxy from MyProxy server (not mandatory): $myproxy-get-delegation(must use your new MyProxy passphrase)

  7. Outline of the exercise 2/2 • Verify your new local proxy*: • $voms-proxy-info --all • Destroy your local proxy with the command and then inspect it* • $voms-proxy-destroy • Go on the https://glite-tutor.ct.infn.it(Preferences/Set VO VOMS), insert your Myproxy passphrase when requested and select the gilda VO. • Come back on the terminal and execute • voms-proxy-info --all * - Do only if you delegated a proxy on the UI

  8. myproxy-init --voms gilda Password: LIMA Choose a new password; This password will be referred as myproxy password

  9. Get credentials from the MyProxy srv

  10. Destroying local voms proxy

  11. The Genius Home Page

  12. Interactive:Set Desktop Password Login the UI to set desktop password Password is GridLIMXX

  13. Interactive:Set Desktop Password Set Desktop password

  14. Authenticating on GENIUS with myproxy GRID authentication The password is the one set when issued the myproxy-init command sevillaXX

  15. Check again the proxy credentials

  16. 1) SET VO: GILDA GRID Settings 2) SET Default services: LFC, RB, MxProxy, …

  17. Available resources (matchmaking)

  18. Resources available: matchmaking

  19. Job Submission: JDL file selection

  20. Job Submission: Ready to submit

  21. Job Submission: Choosing the RB

  22. Job successfully submitted

  23. Job completed successfully

  24. Retrieving Job results 1/3

  25. Retrieving Job results 2/3

  26. Retrieving job results 3/3

  27. Third Exercise Preapare a job described by a JDL and store it on the UI • In this exercise we are going to create a new file on the UI called hostnametest.jdl describing a simple job

  28. Login on the UI

  29. First step: create the JDL file [ JobType = "Normal"; Executable = "/bin/hostname"; StdOutput = "std.out"; StdError = "std.err"; OutputSandbox = {"std.out","std.err"}; ]

  30. Inspecting our JDL

  31. Fourth Exercise Submit the job described by the JDL created in the previous exercise • In this exercise we are going to submit the job described by the JDL file edited in the previous step

  32. Submitting the JDL 1/4

  33. Submitting the JDL 2/4

  34. Submitting the JDL 3/4

  35. Submitting the JDL (4/4)

  36. Retrieving job results

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