Riccardo Bruno, INFN.CTSevilla, 10-14/09/2007

GENIUS Exercises

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Practical information

GENIUS Tutorial website: • https://glite-tutor.ct.infn.it

Tutorial accounts on glite-tutor:• Username: sevillaXX where XX goes from 01 to

30• Password: GridSEVXX where XX goes from 01 to

30when issuing the myproxy-init command• Myproxy password: SEVILLA for all the accounts

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Introduction: 2 Authentications

• 1. Authentication with the User Interface

• 2. Authentication to the Grid.

Input password of the proxy (specified when you

shall execute myproxy-init)

Input password of the user account: GridSEVXX

sevillaXX

sevillaXX

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First Exercise

GENIUS logging in and base settings

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Outline of the exercise 1/2

• Login at your UI account (passwd: GridSEVXX)

• Store a proxy on a remote Myproxy Server machine with the command (using the passphrase SEVILLA):$myproxy-init --voms gilda

• Test to retrieve a local proxy from MyProxy server (not mandatory):$myproxy-get-delegation (must use your new MyProxy passphrase)

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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

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myproxy-init --voms gilda

Choose a new password;This password will be referred

as myproxy password

Password: SEVILLA

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Get credentials from the MyProxy srv

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Destroying local voms proxy

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The Genius Home Page

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Interactive:Set Desktop Password

Login the UI to set desktop password

Password is GridSEVXX

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Interactive:Set Desktop Password

Set Desktop password

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Interactive:Open Desktop

Input the password just set

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myproxy-init on interactive desktop

Password: SEVILLA

Choose a new password;This password will be referred

as myproxy password

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Getting proxy delegation

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One can destroy local proxy…

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authenticating on GENIUS with myproxy

GRID authentication

The password is the one set when issued the myproxy-init command

sevillaXX

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check again the proxy credentials

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Interactive: Close Desktop

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Second Exercise

Launch a job described by a JDL which already exists in the UI

• We suppose to have the JDL file and all the other required data (input sandbox files) on the UI and we shall try to submit the job on the GRID

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Authentication with MyProxy

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GRID Settings

1) SET VO: GILDA

2) SET Default services: LFC, RB, MxProxy, …

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Available resources (matchmaking)

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Resources available: matchmaking

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Job Submission: JDL file selection

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Job Submission: Ready to submit

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Job Submission: Choosing the RB

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Job successfully submitted

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Job completed successfully

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Retrieving Job results 1/3

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Retrieving Job results 2/3

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Retrieving job results 3/3

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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

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Login on the UI

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First step: create the JDL file

[ JobType = "Normal"; Executable = "/bin/hostname"; StdOutput = "std.out"; StdError = "std.err"; OutputSandbox = {"std.out","std.err"}; ]

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Inspecting our JDL

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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

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Submitting the JDL 1/4

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Submitting the JDL 2/4

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Submitting the JDL 3/4

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Submitting the JDL (4/4)

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Retrieving job results

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Resources matchmaking

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Fifth Exercise

Preparing a job described by the JDL with a file to ship in the input sandbox

• In this exercise we are going prepare the JDL description for a job which executes a shell script. The .sh file will be shipped to the CE through the input sendbox

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Step 1: Create the shell script

#!/bin/sh

MY_NAME="Your name"

WORKER_NODE_NAME=$(hostname)

echo "Hello $MY_NAME, from $WORKER_NODE_NAME"

ls -a

echo "This job is running on this CE: "

/opt/edg/bin/edg-brokerinfo getCE

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Step2: create the JDL file

[

Executable = "startScript.sh";

StdOutput = "std.out";

StdError = "std.err";

VirtualOrganisation = "gilda";

InputSandbox = {"startScript.sh"};

OutputSandbox = {"std.out","std.err",".BrokerInfo"};

RetryCount = 7;

]

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Sixth Exercise

Submitting the job prepared in the previous exercise

• In this exercise we are going submit the job which executes a shell script, prepared in the previous exercise. The .sh file will be shipped to the CE through the input sandbox

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List of available resources

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Step 1: submitting job

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Step 2: retrieving the results