OSG Document 364-v1

An Edge Services Framework (ESF) for EGEE, LCG, and OSG

Document #:
OSG-doc-364-v1
Document type:
Presentations
Submitted by:
Abhishek Rana
Updated by:
Elfrida Gabriel
Document Created:
24 Feb 2006, 15:03
Contents Revised:
24 Feb 2006, 15:03
DB Info Revised:
27 Sep 2006, 11:39
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Abstract:
We report on first experiences with building and operating an Edge
Services Framework (ESF) based on Xen virtual machines instantiated
via the Workspace Service available in Globus Toolkit, and developed
as a joint project between EGEE, LCG, and OSG. Many computing
facilities are architected with their compute and storage clusters
behind firewalls. Edge Services are instantiated on a small set of
gateways to provide access to these clusters via standard grid
interfaces. Experience on EGEE, LCG, and OSG has shown that at least
two issues are of critical importance when designing an infrastructure
in support of Edge Services. The first concerns Edge Service
configuration. It is impractical to assume that each virtual
organization (VO) using a facility will employ the same Edge Service
configuration, or that different configurations will coexist easily.
Even within a VO, it should be possible to run different versions of
the same Edge Service simultaneously. The second issue concerns
resource usage: since Edge Services may become a bottleneck to a site,
it is essential that an ESF be able to effectively arbitrate resource
usage (e.g., memory, CPU, and networking) among different VOs. By
providing virtualization on the level of instruction set architecture,
virtual machines allow configuration of independent software stacks
for each VM executing on a resource. Modern implementations of this
abstraction are extremely efficient and have outstanding fine-grained
enforcement capabilities. To securely deploy virtual machines, we use
the Workspace Service from the Globus Toolkit, which allows a VO
administrator to dynamically launch appropriately-configured system
images. In addition, we are developing a library of such images,
reflecting the needs of presently participating communities ATLAS,
CMS, and CDF. We will report on first experiences building and
operating this Edge Services Framework.

Presented at the XVth International Conference on
Computing in High Energy and Nuclear Physics (CHEP’06)
February 15, 2006
TIFR, Mumbai

Authors:

RANA, Abhishek Singh (University of California, San Diego, CA, USA)
WUERTHWEIN, Frank (University of California, San Diego, CA, USA)
GARDNER, Robert (University of Chicago, IL, USA)
KEAHEY, Kate (Argonne National Laboratory, IL, USA)
FREEMAN, Timothy (Argonne National Laboratory, IL, USA)
VANIACHINE, Alexandre (Argonne National Laboratory, IL, USA)
HOLZMAN, Burt (Fermi National Accelerator Laboratory, IL, USA)

MALON, David (Argonne National Laboratory, IL, USA)
MAY, Ed (Argonne National Laboratory, IL, USA)
POPESCU, Razvan (Brookhaven National Laboratory, Upton, NY, USA)
SOTOMAYOR, Borja (University of Chicago, IL, USA)
SHANK, Jim (Boston University, MA, USA)
LAURE, Erwin (CERN (European Organization for Nuclear Research), Geneva, Switzerland)
BIRD, Ian (CERN (European Organization for Nuclear Research), Geneva, Switzerland)
SCHULZ, Markus (CERN (European Organization for Nuclear Research), Geneva, Switzerland)
FIELD, Laurence (CERN (European Organization for Nuclear Research), Geneva, Switzerland)
PORDES, Ruth (Fermi National Accelerator Laboratory, IL, USA)
SKOW, Dane (Fermi National Accelerator Laboratory, IL, USA)
LITMAATH, Maarten (CERN (European Organization for Nuclear Research), Geneva, Switzerland)
CAMPANA, Simone (CERN (European Organization for Nuclear Research), Geneva, Switzerland)
WENAUS, Torre (Brookhaven National Laboratory, Upton, NY, USA)
SMITH, David (CERN (European Organization for Nuclear Research), Geneva, Switzerland)
BLUMENFELD, Barry (Johns Hopkins University, Baltimore, MD, USA)
MARTIN, Stuart (Argonne National Laboratory, IL, USA)
DE, Kaushik (The University of Texas, Arlington, TX, USA)
VRANICAR, Matthew (PIOCON, IL, USA)
WEICHER, John (PIOCON, IL, USA)
SMITH, Preston (Purdue University, IN, USA)
WANG, Shaowen (University of Iowa)

Files in Document:
Associated with Events:
CHEP '06 held on 15 Feb 2006 in Mumbai, India
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