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Feature #9379

Option to reorder copies so that cpn locks are held for the minimum time possible

Added by Philip Rodrigues over 4 years ago. Updated over 3 years ago.

Status:
Rejected
Priority:
High
Assignee:
-
Target version:
-
Start date:
07/07/2015
Due date:
% Done:

0%

Estimated time:
Duration:

Description

Bug #7598 was fixed by having the cpn lock held from the first bluearc copy to the last bluearc copy, but that is still inefficient for Minerva. In order to run efficiently, we need the copies reordered so that all of the bluearc copies are done together and the lock is held for the minimum amount of time possible. This can be optional if other users care about the order of copies, but it is important for Minerva to be able to run jobs efficiently.

History

#1 Updated by Marc Mengel over 3 years ago

  • Status changed from New to Assigned

Adding Daniel R. as a watcher.

Does Minerva still want this? We can't make this the default behavior, but we could add a command line option for it...more all the copies that want a lock to the front of the line..

Or have we expunged BlueArc usage sufficiently we don't care anymore?

#2 Updated by Marc Mengel over 3 years ago

From: Daniel Ruterbories

In a world of BlueArc free GPGrid I think we can move on. MINERvA is in practice 99% BlueArc free at this point with the last 1% really coming from users not understanding my requests to move to the newest job submission scripts. They will either learn the hard way come October or move before then.

Thanks for looking into this, but I guess the system has evolved at this point.

Dan

#3 Updated by Marc Mengel over 3 years ago

From: Phil Rodrigues

I agree with Dan - this is not really important now.

Thanks,
Phil

#4 Updated by Marc Mengel over 3 years ago

  • Status changed from Assigned to Rejected


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