The Globus Toolkit and OMII-Europe
Neil Chue Hong
EPCC, University of Edinburgh
Thanks to Ian Foster and the Globus Team for slides
What specific problem
is the Globus Toolkit
designed to address?
2
EU project: RIO31844-OMII-EUROPE
Ultimately, the Globus Toolkit
is designed to enable the
creation and maintenance of
Virtual Organizations
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EU project: RIO31844-OMII-EUROPE
Virtual Organizations
•
•
•
•
•
Distributed resources and people
Linked by networks, crossing admin domains
Sharing resources, common goals
Dynamic
Fault tolerant
R
R
R
R
R
R
R
R
R
R
R
VO-A
R
4 VO-B
EU project: RIO31844-OMII-EUROPE
Layers in the Grid
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EU project: RIO31844-OMII-EUROPE
The Globus Toolkit:
“Standard Plumbing” for the Grid
• Not turnkey solutions, but building blocks & tools for
application developers & system integrators
– Some components (e.g., file transfer) go farther than others
(e.g., remote job submission) toward end-user relevance
• Easier to reuse than to reinvent
– Compatibility with other Grid systems comes for free
• Today the majority of the GT public interfaces are
usable by application developers and system
integrators
– Relatively few end-user interfaces
– In general, not intended for direct use by end users
(scientists, engineers, marketing specialists)
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EU project: RIO31844-OMII-EUROPE
A Typical eScience Use of Globus:
Network for Earthquake Eng. Simulation
Links instruments, data,
computers, people
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EU project: RIO31844-OMII-EUROPE
Without the Globus Toolkit
Simulation
Tool
Web
Browser
Web
Portal
Application
Developer
10
Off the Shelf
12
Globus Toolkit
0
Grid Community
0
Compute
Server
B
Compute
Server
Registration
Service
Data
Viewer
Tool
Chat
Tool
Credential
Repository
Application services
organize VOs & enable
access to other services
Camera
Telepresence
Monitor
Data
Catalog
Certificate
authority
Users work
with client
applications
A
Collective services
aggregate &/or
virtualize 8resources
Camera
C
Database
service
D
Database
service
E
Database
service
Resources implement
standard access &
management interfaces
EU project: RIO31844-OMII-EUROPE
With the Globus Toolkit
Globus
GRAM
Simulation
Tool
Web
Browser
Globus
GRAM
Globus Index
Service
CHEF
Compute
Server
Compute
Server
Camera
Application
Developer
2
Off the Shelf
9
Globus Toolkit
4
Grid Community
4
Data
Viewer
Tool
CHEF Chat
Teamlet
MyProxy
Telepresence
Monitor
OGSA
DAI
Globus
MCS/RLS
Application services
organize VOs & enable
access to other services
OGSA
DAI
OGSA
Certificate
Authority
Users work
with client
applications
Camera
DAI
Collective services
aggregate &/or
virtualize 9resources
Database
service
Database
service
Database
service
Resources implement
standard access &
management interfaces
EU project: RIO31844-OMII-EUROPE
The Globus Toolkit is
a Collection of Components
• A set of loosely-coupled components, with:
– Services and clients
– Libraries
– Development tools
• GT components are used to build Grid-based
applications and services
– GT can be viewed as a Grid SDK
• GT components can be categorized across two
different dimensions
– By broad domain area
– By protocol support
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EU project: RIO31844-OMII-EUROPE
Globus Toolkit version 2 (GT2)
Web
Services
Components
Pre-WS
Authentication
Authorization
GridFTP
Security
Data Mgmt
Grid Resource Monitoring
Alloc. Mgmt & Discovery
(GRAM)
(MDS)
Execution
Mgmt
Info
Services
C Common
Libraries
Non-WS
Components
Common
Runtime
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EU project: RIO31844-OMII-EUROPE
Globus Toolkit version 3 (GT3)
Community Data Access
Authorization & Integration
WS
Authentication
Authorization
Pre-WS
Authentication
Authorization
Reliable
File
Transfer
Grid Resource
Alloc. Mgmt
(WS GRAM)
GridFTP
Grid Resource Monitoring
Alloc. Mgmt & Discovery
(GRAM)
MDS3
(MDS)
Replica
Location
Security
Data Mgmt
Java
WS Core
C Common
Libraries
eXtensible
IO (XIO)
Execution
Mgmt
Info
Services
Web
Services
Components
Non-WS
Components
Common
Runtime
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EU project: RIO31844-OMII-EUROPE
Globus Toolkit version 4 (GT4)
Grid
Telecontrol
Protocol
Community
Scheduling
Framework
Python
WS Core
Community Data Access Workspace
Authorization & Integration Management
Trigger
C
WS Core
Reliable
File
Transfer
Grid Resource
Allocation &
Management
Index
Java
WS Core
Pre-WS
Authentication
Authorization
GridFTP
Pre-WS
Pre-WS
Grid Resource Monitoring
Alloc. & Mgmt & Discovery
C Common
Libraries
Credential
Mgmt
Replica
Location
www.globus.org
eXtensible
IO (XIO)
Security
Data Mgmt
Authentication
Authorization
Execution
Mgmt
Contrib/
Preview
Deprecated
WebMDS
Delegation
Data
Replication
Core
Info
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Services
Common
Runtime
Web
Services
Components
Non-WS
Components
EU project: RIO31844-OMII-EUROPE
GT4 Components
Your
Your
CC
Client
Client
SERVER
Your
Your
Python
Python
Client
Client
Java Services in Apache Axis Python hosting,
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Plus GT Libraries and Handlers
GT Libraries
Pre-WS MDS
C WS
Core
Pre-WS GRAM
pyGlobus
WS Core
RLS
Your
C
Service
MyProxy
Your
Python
Service
SimpleCA
X.509 credentials =
common authentication
CAS
OGSA-DAI
GTCP
Delegation
Index
Trigger
Archiver
Your
Your
Java
Java
Service
Service
GRAM
RFT
Interoperable
WS-I-compliant
SOAP messaging
Your
Your
CC
Client
Client
Your
Your
Java
Java
Client
Client
Your
Your
Python
Python
Client
Client
GridFTP
Your
Your
Java
Java
Client
Client
CLIENT
C Services using GT
Libraries and Handlers
EU project: RIO31844-OMII-EUROPE
OMII-Europe / Globus activities
Port OGSADAI
OGSA DAI
BES
VOMS
RUS
Grid
Sphere
Etc.
Identified
Components
EGEE
(GLite)
UNICORE
Globus
Etc. OMII-UK, USA,
China
Security
WS-GRAM
w/ BES and
JSDL
22
Common
Accounting
EU project: RIO31844-OMII-EUROPE
Summary
• The Globus Toolkit is a collection of reuseable
components to help application builders harness the
Grid
• In OMII-Europe, the challenge is to allow components
from different middleware stacks to interact and
interoperate well
• For Globus, the main areas are:
– Job Submission
– Data Services
– Accounting and Security
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EU project: RIO31844-OMII-EUROPE
Thank you for listening
Any questions?
http://www.omii-europe.com
http://www.globus.org
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EU project: RIO31844-OMII-EUROPE