Convert generic gUSE Portal into a science gateway

Akos Balasko

Outline

1. Motivation2. Terminology3. Basic Idea4. Concept of ASM5. Classification of API methods

2

GoalCommunity members want to:

Execute scientific applications Using distributed systems to:

• decrease time cost• Exploit storage & computational capacities

use complex systems totally hidden

Do not want to : learn any techniques that don't fit with scientific area of

them

→ would like to use web-interfaces based on gUSE

Example gateways for Scientific Communities

Where are we now?

6

WS-PGRADEWF

DeveloperUI

gUSE DCI Bridge

DCI 1

DCI 2

DCI n

ApplicationSpecific

User Interface

ExistingApplicationSpecific UI

WS-PGRADEEnd-User

UI

Remote API

BES interface

ASM API

A

B

C

D

E

BES interface

ASM API

WS-PGRADE UI

Customized UI

Other, existing UI

WS-PGRADE workflow UI

TerminologyGrid Application Developer

– would like to have a Portal customized for the application and end user community

– knows how to develop a grid application in gUSE/ws-PGrade or how to port a legacy application to the grid with gUSE/ws-PGrade

Grid Portal Developer – He knows the Java language and JSP (Java Server Pages)

or other techniques (IceFaces etc)– He does not need to know the source code of gUSE – He and also the end users have user certificates to access

the grid

TerminologyGrid Application Developer

• Develops a grid application with gUSE• Exports it to the local repository of gUSE

End Users, Scientists• execute a copy of the exported application with custom input parameters

Grid Portal Developer•Develops an interface (in general a portlet) that fits to the application I/O pattern and the end users’ needs and associate it with the role• Connects the GUI to gUSE using the programming API of Application Specific Module(ASM)

Basic idea• A new module called “Application Specific Module” has been developed

for gUSE that ease the creation of Application Specified Portlets – The module provides programming API to control applications

developed using gUSE– The module provides programming API to access inner gUSE services

• Any kind of Graphical interface can be developed on top of this module – GUI written in JSP, JSTL (Java Servlet Tag Library ) and Java– GUI can be customized for the grid application– GUI can be customized for end users

Concept

ws-PGrade

Internal components

submitter

Desktop or Service grids / cloud / ClustersDCIs

gUSE

Web browserClient

11

Concept

ws-PGrade

Internal components

submitter

Desktop or Service grids / cloud / ClustersDCIs

gUSE

Web browserClient

Developed web-interface

12

We will focus on this!

Concept in detailsWeb browserClient

Developed web-

interface

Web pages (JSP, JSF or other)

JAVA event handler, and inner classes

Application Specific Module API

Configuration files (wsdd)

You develop it

You develop it

13

Concept

ws-PGrade

Internal components

submitter

Desktop or Service grids / cloud / ClustersDCIs

gUSE

Web browserClient

Developed web-interface

14

Placing web-app as gUSE component

DCI systems

gUSE

ws-PGrade

Submitter

Workflow InterpreterRepository

Workflow Storage

Storage

Information User space

Concept in details

15

DCI systems

Grid Application Developer creates own Grid Application via ws-PGrade and export it to the local repository

gUSE

Repository

ws-PGradeGrid Application

Submitter

Workflow Interpreter

Workflow Storage

Storage

Information User space

Concept in details

16

gUSE

DCI systems

Then the Grid Portal Developer creates a new web-application (mainly an web-interface) which fits to the user community's needs, and connects it to the gUSE using ASM API

ws-PGrade Developed web-interface

ASM

Repository

Grid Application

Submitter

Workflow Interpreter

Workflow Storage

Storage

Information User space

Concept in details

17

gUSE

DCI systems

Finally the end-users create own application from the exported one, parameterize and execute it using the developed portlet

ws-PGrade Developed web-interface

ASM

Repository

Submitter

Workflow Interpreter

Workflow Storage

Storage

Information User spaceGrid Application

Concept in details

<< import >>

18

gUSE

DCI systems

Finally the end-users create own application from the exported one, parameterize and execute it using the developed portlet

ws-PGrade Developed web-interface

ASM

Repository

Submitter

Workflow Interpreter

Workflow Storage

Storage

Information User space

Grid Application

Concept in details

19

gUSE

DCI systems

Finally the end-users create own application from the exported one, parameterize and execute it using the developed portlet

ws-PGrade Developed web-interface

ASM

Repository

Grid Application

Submitter

Workflow Interpreter

Workflow Storage

Storage

Information User space

Concept in details

20

gUSE

DCI systems

Finally the end-users create own application from the exported one, parameterize and execute it using the developed portlet

ws-PGrade Developed web-interface

ASM

Repository

Submitter

Workflow Interpreter

Workflow Storage

Storage

Information User space

Grid Application

Concept in details

21

Classification of API methodsMethods are provided for full scale of

a) Workflow/Job Configuration

a) Uploading inputs

b) Settings input values

c) Setting mysql query results as inputs

d) Setting execution resources

b) Execution management

a) Submission/Resume/Abort

b) Output retrieving

possibilities offered by WS-PGRADE/gUSE

But note: nothing for changing the workflow structure itself23

Technical details and try-out tomorrow...

Thanks for your attention!Questions?