GPU on GRID

See the required underlying steps to enable GPU job submission.

Use Case 1: Direct job submission to a CREAM service

Straightforward means of GPU computing on Grid.
Acomplished through gpu resource under JDL's CERequirements.
There is no GPU matchmaking: the grid user needs to know the endpoint to submit to.

A basic JDL example could be:

    # cat test_cream.jdl
    [ 
        JobType = "Normal"; 
        Executable = "foo.sh"; 
        StdOutput="out.out"; 
        StdError="err.err"; 
        InputSandbox={"foo.sh"}; 
        OutputSandbox={"out.out", "err.err" }; 
        OutputSandboxBaseDestUri="gsiftp://localhost";

        CERequirements="gpu==2";
    ]

Submit the job directly to the CREAM service with glite-job-ce-submit.
Target CE: amargus01.ifca.es

Use Case 2: Job submission through WMS