UNICORE 6.2.2 workflow system released

[Bernd Schuller]

Dear all,

I'm pleased to announce the release 6.2.2 of the UNICORE workflow system.

It can be downloaded from SourceForge at
https://sourceforge.net/projects/unicore/files/


For your convenience, here are the direct download links

tar.gz bundle:
<https://sourceforge.net/projects/unicore/files/1%20UNICORE%206%20Servers%20and%20Services/1.2%20Workflow%20System/6.2.2/unicore-workflow-6.2.2.tgz/download>
Graphical installer:
<https://sourceforge.net/projects/unicore/files/1%20UNICORE%206%20Servers%20and%20Services/1.2%20Workflow%20System/6.2.2/unicore-workflow-6.2.2.jar/download>


After a lot of new code was introduced in the previous version,
this release focuses on stability, performance and fixing bugs,
for details see the change log below.

As usual there is a tar.gz and a jar file. For information on installation
and how to integrate with an existing UNICORE 6 installation, please refer
to the UNICORE Wiki at
http://sourceforge.net/apps/mediawiki/unicore/index.php?title=SetupWorkflowSystem
or to the docs/setup.txt file in the distribution.


Change log for 6.2.2:
*********************
 General:

 - smarter start/stop scripts
 - cleaned up installers
 - use latest (6.2.2) base UNICORE libraries

 Workflow engine:

 - several fixes in the for-each loop implementation
 - performance enhancements (callback/tracing calls are
   processed asynchronously now)
 - avoid excessive growth of workflow persistence data
 - poll service orchestrator for work assignment status,
   in case callback messages are missed (e.g. if workflow
   server is restarted)
 - allow String and Boolean variable types in the for-each loop
 - add a evaluation function that allows to access the latest exit code
   of an activity, and assign it to a workflow variable
 - allow to switch off resubmission "globally" by setting (in uas.config)
   "unicore.workflow.resubmit.disable=true"
 - Bugfix: workflow abort really aborts running subtasks (but not
   any currently running jobs)
 - Report errors in variable declaration and modification activities
 - fix rare race condition when location manager "update" operation
   failed

 Service orchestrator

 - enhanced performance by caching resource lookup
 - consolidated logging (less verbose)
 - fix trust delegation issue
 - do not fail work assignment if stdout/stderr files
   are missing (but do fail if other output files are missing)
 - better deal with "disappearing" target system instances



Thanks to all who helped build and test this release!

Best regards,
Bernd.


--
Dr. Bernd Schuller
Distributed Systems and Grid Computing
Juelich Supercomputing Centre, http://www.fz-juelich.de/jsc
Phone: [phone] (fax -8556)
Personal blog: www.jroller.com/page/gridhaus



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Forschungszentrum Juelich GmbH
52425 Juelich
Sitz der Gesellschaft: Juelich
Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
Vorsitzende des Aufsichtsrats: MinDir'in Baerbel Brumme-Bothe
Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender),
Dr. Ulrich Krafft (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt,
Prof. Dr. Sebastian M. Schmidt
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