Hi Sergio,
Here are the use cases you asked me to send the list. Let me know if you require us to have a telecon to talk about the use cases.
A follow up on story 5:
We really think adding of software executable under the software package is needed. Here's our use case..
Recent development of Grisu (http://www.grid.apac.edu.au/repository/trac/grisu/) has shown that a *Generic Submission Tool* is possible and would be very useful. A software developer at a site could publish information for a new application that would then be instantly available for use.
No generic tool can work without being able to query for the executable to use.
Use case (for GLUE1.3 comment/issue #1):
A user needs to know how many CPUs he can use for his MPI job.
- FreeJobSlots which is the number of single processor jobs I can submit to a queue doesn't really answer this requirement. A queuing system reporting 32 free job slots wouldn't necessarily mean that the user can run a 32 CPU mpi job on that system.
I've noticed the addition of the MaxSlotsPerJob attribute in the ComputingSharePolicy which you probably were thinking of using to address this use case. The use of this MaxSlotsPerJob term makes FreeJobSlots more confusing. If FreeJobSlots equates to the number of sequential jobs I can run on the system, I can't see any reason why a sequential job will have a limit to the number of processors it can use.
As what we've talked about before in the telecon on 22 January, we need to have a new term to describe the free CPUs for the MPI job, FreeParallelCPUs perhaps?. And the term MaxSlotsPerJob can probably be renamed to MaxCPUsPerParallelJob.
A comment on Stephen Burke's comment about GLUE 1.3 Issues/Comments #3:
We don't think there's a way to calculate WorstResponseTime on a preemptive system. A worst response time for a job that user A submits now might not be valid anymore 5 minutes later because user B who has a higher priority submits a job and preempts the job submitted by user A.
Use cases (for GLUE1.3 comment/issue #5 and #6):
none - They were just comments and we don't really have use cases for them.
Thanks,
Gerson