1. GENIUS Grid portal Hands on
Domenico Vicinanza
CERN

2. Practical Information
GENIUS Tutorial website:
Tutorial accounts on glite-tutor:
Username: santiagoXX where XX goes from 01 to 60
Password: GridSANXX where XX goes from 01 to 60
when issuing the myproxy-init command
Myproxy password: SANTIAGO for all the accounts
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3. Introduction: the two-layers Authentication
1. Authentication with the User Interface
2. Authentication to the Grid.
Input password of the user account: GridSANXX
Input password of the proxy (specified when you shall execute myproxy-init)
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4. GENIUS logging in and base settings
Preliminary Exercise
GENIUS logging in and base settings
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5. Outline of the exercise 1/2
Login at your UI account (passwd: GridSANXX)
Store a proxy on a remote Myproxy Server machine with the command (using the passphrase SANTIAGO):
>myproxy-init --voms gilda
Retrieve a local proxy from MyProxy server:
> myproxy-get-delegation (must use your new MyProxy passphrase)
Verify your new local proxy:
>voms-proxy-info --all
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6. myproxy-init --voms gilda
Password: SANTIAGO
Choose a new password;
This password will be referred
as myproxy password
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7. Get credentials from the MyProxy server
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8. GRID authentication
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9. Launch a job described by a JDL which already exists in the UI
First 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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10. Selecting job
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11. Submitting job
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12. Submitting job
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13. Submitting job
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14. Checking the status
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15. Retrieving job results 3/3
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16. Preapare a job described by a JDL and store it on the UI
Second 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 helloworld.jdl describing a simple job
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17. First step: create the JDL file
[ JobType = "Normal"; Executable = "/bin/echo"; Arguments = "Hello World !"; StdOutput = "std.out"; StdError = "std.err"; OutputSandbox = {"std.out","std.err"}; ]
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18. Inspecting our JDL
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19. Submit the job described by the JDL created in the previous exercise
Third 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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20. Submitting the JDL 1/4
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21. Submitting the JDL 2/4
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22. Submitting the JDL 2/4
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23. Retrieving job results
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24. Fourth 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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25. Step 1: Create the shell script
#!/bin/sh
MY_NAME="Your name"
WORKER_NODE_NAME=glite-tutor.ct.infn.it
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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26. 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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27. Submitting the job prepared in the previous exercise
Fifth 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 sendbox
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28. (List of available resources)
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29. Step 3: submitting job
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30. Step 4: retrieving the results
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31. Sixth Exercise
Preparing a set of three aggregated jobs with dependencies (DAG) and submitting it
In this exercise we are going prepare the JDL description for a three-jobs aggregate with dependencies (Directed Acyclic Graph, or DAG) and submit it to the GRID
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32. DAG execution
Node2
Node1
{node1, {node2, node3}}
Node3
Each node carries out a job described by its own JDL file
node1=[        file=“myjob.jdl";       ];
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33. DAG JDL file [ Type = "dag"; VirtualOrganisation="GILDA"; nodes = [
file="helloworld.jdl"; ];
node2=[
node3=[
dependencies = {{node1, {node2, node3}}}; ]
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34. DAG file creation Node2 Node1 Node3
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35. DAG job submission
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36. Running according to dependecies
Node1
Click on “dagman” link to
Inspect the DAG execution
Since we have specified a dependency
among the nodes: {node1, {node2, node3}}
the job execution on node2 and node3 will start
right after the end of the node1 job
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