r7 - 12 Apr 2012 - 11:51:51 - RobertGardnerYou are here: TWiki >  Admins Web > MinutesFedXrootdWorkshopApr11

MinutesFedXrootdWorkshopApr11

Dinner tonight!

  • Bistro Voltaire on Chicago Ave
  • 14 folks

Enabling GSI security everywhere, N2N

  • Wei's email
  • SLAC, UTA, Illinois T3, MWT2 DONE
  • Also done now: OU (T2, T3), AGLT2 DONE
  • NET2 as well (Wei will work with Saul)

Enabling the monitoring

Redirectors

  • Andy's presentation
  • http://www.slac.stanford.edu/~abh/Atlas/AtlasFAX1204.pptx
  • Deployed xrd-central.usatlasfacility.org (for now, xrd-central.uchicago.edu)
    • Connect MWT2
    • Connect AGLT2
    • Connect IllinoisHEP
    • Connect OU
  • Instructions
    The change to the /etc/xrootd/xrootd-clustered.cfg is:
     
    #all.manager glrd.usatlas.org:1095
    #all.manager xrd-central.usatlasfactility.org:1095
    all.manager xrd-central.uchicago.edu:1095
     
    (The first commented line is the original one…the second is the future name for the central redirector and the third is the current (temp) one to use)
     
    Let me know if you have questions.  Don’t forget to restart cmsd/xrootd
     
    Shawn

Demonstrate production-scale analysis

Panda

Regarding including capabilities from Panda I can see two very useful advances that shouldn't be too hard:

  • A modified local site mover that falls back to the federation (Hiro and Shawn have both discussed variants of this. What specifically do we need to move it forward)
  • Submitting a prun job as dataset rather than pfnlist with an argument of redirector.

Caching

  • Doug
  • Need to define required capabilities


Reference

Enabling GSI security everywhere
	1) talk slides leading with instructions
	2) sites do it in real time

Enabling the monitoring
	1) talk slides leading with instructions
	2) sites do this in real time
	3) we need visibility as to activity and performance.  I presume we continue
	both with Matevz and Artem's - what specific requirements can we give
	them in advance?

Redirectors
	1) talk slides with instructions for regional redirection
	2) selected regional redirector (proposal MW regional)   Northeast? (BNL + BU + ...)
	3) demonstrate functional redirection modes, fall back to global

Demonstrate production-scale analysis
	1) code & instructions available in advance
	2) focus on WAN direct access
	3) demonstrate performance at scale exceeding a threshold from 
	a Tier 3 to a region
		~ 300 jobs
		>= 50% of local efficiency
	

Regarding including capabilities from Panda I can see two very useful
advances that shouldn't be too hard:

	1) A modified local site mover that falls back to the federation
	(Hiro and Shawn have both discussed variants of this. What
	specifically do we need to move it forward)

	2) Submitting a prun job as dataset rather than pfnlist with
	an argument of redirector. 


-- RobertGardner - 10 Apr 2012

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