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Feature #3737

improve the ability to auto detect the need to disable fast cloning

Added by Rob Kutschke over 6 years ago. Updated over 3 years ago.

Status:
Closed
Priority:
Low
Assignee:
-
Category:
I/O
Target version:
Start date:
Due date:
09/30/2013
% Done:

100%

Estimated time:
48.00 h
Scope:
Internal
Experiment:
Mu2e
SSI Package:
art
Duration:

Description

When you get a chance, please contact Bill Tanenbaum to learn how smart cmsrun is about knownig when to automatically disable fast cloning. I am under the impression that cmsrun does a better job at this than does art. If, indeed, cmsrun is smarted, please add their capabilities to art.

History

#1 Updated by Rob Kutschke over 6 years ago

I spoke again with Bill. cmsrun has fastCloning on by default. It has good, but not perfect, automatic detection, on a product by product basis, to disable fast Cloning when appropriate. He tells me that the implementation is that the source puts information about the schema ( or a pointer to it?) into the FileBlock object. The output modules can get the FIleBlock object from art and decide of the schema are compatible or not. There are still (very rare) occaisions on which it is necessary to disable fast Cloning in the config file; that does it for all data products.

We definitely want this feature but it is still a low priority.

#2 Updated by Christopher Green over 6 years ago

  • Due date set to 09/30/2013
  • Category set to I/O
  • Target version set to 1.09.00
  • Start date deleted (04/19/2013)
  • Estimated time set to 48.00 h
  • Scope set to Internal
  • Experiment Mu2e added
  • SSI Package art added

Testing is likely to take up the bulk of the time for this issue.

#3 Updated by Christopher Green over 6 years ago

  • Status changed from New to Accepted

#4 Updated by Christopher Green almost 6 years ago

  • Target version changed from 1.09.00 to 521

#5 Updated by Christopher Backhouse almost 4 years ago

NOvA would like to raise the priority of this issue. Probably the most common thing we tell new users is "add fastCloning: false to your config".

#6 Updated by Kyle Knoepfel over 3 years ago

  • Status changed from Accepted to Closed
  • Target version changed from 521 to 2.03.00
  • % Done changed from 0 to 100

This feature was implemented in art 2.03.00.



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