Projects:
 DOE Grid Services
 Globus Toolkit Development Community Expansion
 GRIDS Center




Technologies:
 Globus Resource Allocation Manager (GRAM)


Definition:


Currently when a delegated credential is needed by a GRAM job, a separate
listener and, as a result, user proxy (a proxy based off of the delegated
credential but owned by the user) must be generated for each job regardless if
the jobs are sharing the same delegated credential. This is unnecessary work
that should be minimized to increase job creation throughput. Global (with
respect to individual jobs) management of listeners which are used by multiple
jobs is needed to reduce this extra work. The use of a new credential deletion
callback from the Delegation Service is needed to implement this correctly.



Deliverables: 

	1.  	Statistic showing throughput before work begins with 70 parallel clients
and a job load of 1. The jobs will have to be configured to reuse a delegation
done before the tests. This is needed to verify that this change is helping
situational throughput.
	2.  	Updated DelegatedCredential listener class which statically keeps track of
delegated credential EPRs to avoid repeat instance creation.
	3.  	Statistic showing throughput after work has been completed. Configuration
of the test should be identical to deliverable #1.



Tasks: 

	1.  	Create an RSL with a previously obtained delegated credential EPR.
	2.  	Run the throughput tester using the newly created RSL with 70 parallel
clients and a job load of 1.
	3.  		4.  	Implement the credentialDeleted() listener method in
DelegatedCredential.
	5.  	Update DelegatedCredential to either create a new instance if a mapping
for the supplied delegated credential EPR doesn't exist, or reuse the instance
associated with the mapping already there.
	6.  	Re-run the throughput tester using the newly created RSL with 70 parallel
clients and a job load of 1.
	7.  	Update campaign status with before and after throughput statistics.



Time Estimate: 

1 day