SG Pseudo dynamic DAG Control

From EGEE-see WIki

Abstract: The user of the P-GRADE Portal should be able to redirect the control in her/his DAG workflow upon the outcome of any job. The exit value set by the executable of the user’s job determines weather a job fails or succeeds. The failed job therefore should not stop the overall operation, and no real subsequent computational activity must be started in the branch proved to be false. The suggested solution is a clean “user level” one not requesting any change in the P-GRADE Portal middleware

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