National Energy Research Scientific Computing Center (NERSC)

Visportal :

interface to grid enabled NERC resources

Cristina SiegeristNERSC Center Division, LBNLJune 24th, 2004

Visportal Project

• The LBNL/NERSC VisPortal effort explores ways to deliver Grid-based advanced visualization and data analysis capabilities through a Web Portal interface.

• Using standard Globus Grid middleware and off the shelf web automation, the VisPortal hides the underlying complexity of resource selection and distributed application management.

Visportal Project

Internal Architecture

Web Server

Tomcat

GPDKPortal Engine

(Servlets)

Application Logic Presentation(JSP)

Grid Service BeansSecurity Job

Submission

Information Services

Data Transfer

User Profiles

Grid Middleware Libraries(e.g. CoG)

globus

Visportal Project

• VisPortal Services:• Motivation: simplify remote visualization,

offer point an click solutions for complex distributed applications

• File Management• One button Mpeg• … (User’s grid workflows?)

Visportal Project

User’s perspective• Accounts in all the resources.

• Request a user certificate: http://www.doegrids.org/pages/cert-request.html

• Be in the grid-map files of the resources (automated through NIM).

• Create a proxy certificate and login. Delegate it to myproxy.nersc.gov

Visportal Project

Login Page

• Myproxy: username and password of delegated credential

• Local: load from credential file (grid-proxy-init)

Visportal Project

• Update user’sresourcesjob historyemail address

Profile

Visportal Project

File Mgmt.

• Foreground transfers

• Background transfers

• Globus File Yanker(Shreyas Cholia)

Demo

The END