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oar-team / batsim

Batsim: Infrastructure simulator for job and I/O scheduling
GNU Lesser General Public License v3.0
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Jobs submitted at the same time should be in the same message #35

Closed mpoquet closed 5 years ago

mickours commented 6 years ago

Not sure that this would be useful: It would break the protocol and most of the jobs needs to be managed separately by the scheduler. Also, the gain in the protocols message size is quite low.

@mpoquet do you have use case for this?

mpoquet commented 6 years ago

Mmh sorry I meant in the same network message, not in the same protocol event.

As a use case I can think of batches of jobs that are submitted together, notably for those submitted at time 0 for offline scheduling problems. Currently, I think that offline algorithms must wait two messages containing job submissions, while one message should be enough.

I think that this feature is very easy to implement. Within Batsim, we should just send a container of jobs rather one job in internal messages from the job submitter to the server.

A test should be added about it, this feature may already work as the sleep calls in the job submitters have been modified in the past.

mpoquet commented 6 years ago

Note: the same_submit_time test only checks that the messages that should be submitted at the same time are sent in a deterministic order (ordered by job_id).

Mommessc commented 5 years ago

Up!

mpoquet commented 5 years ago

Hello @Mommessc! I have no update about this, it may already work or not. It should be easy to implement : Just send a vector of jobs instead of one job in the internal message from the submitter to the server.

mpoquet commented 5 years ago

Merged in 22d2f9e. Thanks @Mommessc!