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The ASC Cactus Portal

The ASC Cactus Portal. A Case Study in Grid Portal Development. Michael Paul Russell Dept of Computer Science The University of Chicago russell@cs.uchicago.edu. Grid Portals Defined. A short description.

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The ASC Cactus Portal

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  1. The ASC Cactus Portal A Case Study in Grid Portal Development Michael Paul Russell Dept of Computer Science The University of Chicago russell@cs.uchicago.edu

  2. Grid Portals Defined A short description Grid Portals are a class of www application servers that provide a secure online environment for gathering information about Grid services and resources as well as provide tools for utilizing these Grid services and resources to perform useful tasks.

  3. Example Portals Just a few examples • The Astrophysics Simulation Collaboration Portal A Cactus Portal Application https://www.ascportal.org/asc/ • SDSC Hot Pages A Web-based Interface to NPACI Computing Resources http://hotpage.paci.org/ • WebSubmit A Web-based Interface to High Peformance Computing Resources http://www.itl.nist.gov/div895/sasg/websubmit/websubmit.html

  4. Grid Portal Properties What Grid Portals have in common • Highly-available multi-user www application servers. • Accessible with common www thin-client technology. • Provide secure remote access to Grid resources & services. • Provide consistent interfaces to diverse sets of services. • Provide a comprehensive view of Grid resources & services. • Often serve the needs of a specific community of Grid users.

  5. Additional Functions Grid Portals Grid-Enable • Secure online access to remote system tools. • A platform for distributing and running software on the Grid. • A platform for publishing information about resources.

  6. Grid Portal Provisions Typical online tools Grid Security Management Tools for secure access to stored user proxies for authenticating to multiple Grid sites & services. Information Queries Tools for defining queries to determine resource availability & status, dataset location, monitoring jobs, etc. Grid Resource Management Tools for configuring user resources such as specifying appropriate location for mass secondary data storage on remote file systems. Grid Software Management Tools for checking out, compiling, deploying and configuring software on remote sites, running and monitoring software during execution. Grid Data Management Tools for common file management on remote sites; tools for locating and accessing large shared datasets, etc.

  7. Architecture Overview Client code downloaded onto http client DHTML Information managed & stored on site XML/XSL Lower-level Libraries Java applets JDBC … Globus Portal information Resource information User information Task information File systems Relational DBMS Grid Information Service Files Files Data Data Data Data Grid Portal Site boundary Secure HTTPD JSP Server Remote method invocation Application logic Middleware libraries Persistent storage systems

  8. Key Properties Architectural points • Built upon common www application client-server technology. • Leverage Grid technology for access to data and computing. • Utilizes Grid Security Infrastructure (GSI) software.

  9. Application Services Grid Information Index Service Grid Resources Comp • Organizational information • Grid resource information • Grid security information • Grid user information Grid computational services Proxy Secure proxy storage & retrieval Data Grid data storage services Soft Grid software repositories MyProxy Service GIS Grid information services Commonly accessed services

  10. Grid Architecture Comp Comp The Application Grid is the set of services available on sites distributed throughout the Grid. Grid Portals utilize these services as well as provide users with this view of the Grid. Data GIS WWW Client Data Data WWW Portal WWW Client GIS Comp WWW Client Soft Soft GIS Proxy GIIS MyProxy Service Portal GIIS

  11. Software Requirements Grid Portal Client Software • Internet browser (Netscape 4.0+ or Internet Explore 4.0+) GSI Client software • MyProxy Client Software (http://www.globus.org/cog)

  12. A Case Study The ASC Cactus Portal The ASC Cactus Portal is an online environment for building, distributing, running and monitoring Cactus applications. More importantly, it provides tools for helping users to effectively utilize the entire set of Grid computational and data management services to which they have access.

  13. Cactus Defined What is Cactus? “Cactus is a freely available, modular, portable and manageable environment for collaboratively developing high- performance multidimensional simulations”

  14. Cactus Portal Provisions Look familiar? Grid Security Management Tools for secure access to stored user proxies for authenticating to Grid sites & services. Information Queries Tools for defining queries to determine resource availability & status, dataset location, monitoring jobs, etc. Grid Resource Management Tools for configuring user resources such as specifying appropriate location for mass secondary data storage on remote file systems. Grid Software Management Tools for checking out, compiling, deploying and configuring software on remote sites, running and monitoring software during execution. Grid Data Management Tools for common file management on remote sites; tools for locating and accessing large shared datasets, etc.

  15. Cactus Portal Architecture Tomcat Portal DHTML/JSP Portal Java Information managed & stored on site Service Libraries CoG/GPDK Java IO … CoG Portal information Resource information User information Task information File systems Files Files Grid Portal Site boundary Stronghold Client code downloaded onto http client DHTML

  16. Application Components Cactus JSP Software Cactus Java Software Source Mgmt File Mgmt CVS Mgmt Application Mgmt Make Mgmt Parameter Files Mgmt Job Mgmt Job Mgmt Globus Java Libraries MyProxy GSI-LDAP GSI-FTP GRAM Organization

  17. ASC Cactus Portal Grid Each user selects one site on the Grid to be her personal repository from which software and data is deployed onto other sites on the Grid. This allows a user to interact with the repository outside of the the Cactus Portal and potentially to use this same repository in conjunction with other Grid Portals Comp Comp Data GIS www.ascportal.org Comp Comp Portal Soft GIS Data GIS Comp Data Personal repository Data Data myproxy.ascportal.org giis.ascportal.org cvs.cactuscode.org GIS Comp Proxy GIS Soft The Cactus Portal uses a publicly shared Cactus Software Repository in conjunction with allowing users to import custom libraries for distribution onto Grid sites. MyProxy Service Portal GIIS Cactus CVS

  18. Future Goals ASC Cactus Portal Goals • Develop generic and robust source code management tools. • Develop generic and robust grid data management tools. • Allow users to share access to data and software. • Develop robust online administration tools. • Develop reusable Grid Portal software libraries.

  19. Research Ideas GDB MAKE CVS Source Integrated environments • Build an online Cactus integrated development environment (IDE). Edit Compile Debug Run Version • Develop online scripting environment for customizing tasks. for (ii = 0; ii < 20; ++ii) { appl.setParameterFile(parf[ii].getUrl()); appl.run(); }

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