National Institute of Advanced Industrial Science and Technology ApGrid: Asia Pacific Partnership for Grid Computing - Introduction of testbed development efforts in Asia Pacific Region - Yoshio Tanaka

Asia Asia Grid Initiative North America Europe International Collaboration Standardization Possible Applications on the Grid Bio Informatics （ Rice Genome, etc. ） Earth Science （ Weather forecast, Fluid prediction, Earthquake prediction, etc. ） ApGrid Testbed International Grid Testbed over the Asia Pacific countries ApGrid focuses on  Sharing resources, knowledge, technologies  Developing Grid technologies  Helping the use of our technologies in create new applications  Collaboration on each others work

History of ApGrid ApGrid Exhibition at HPCAsia （ Gold Coast, Australia) ApGrid Exhibition / SC Global Event at SC 2001 （ Denver, USA) 1 st ApGrid Core Meeting (Phuket, Thailand) 1 st ApGrid Workshop (Tokyo, Japan) 2 nd ApGrid Workshop / 2 nd ApGrid Core Meeting (Taipei, Taiwan) 2000 Kick-off meeting (Yokohama, Japan) Presentation at GF5 (Boston, USA) ApGrid Exhibition at SC 2002 （ Baltimore, USA) 15 countries, 41 organizations (as of Aug, 2003) 2003 We are here ApGrid Demo at CCGrid 2003 (Tokyo, Japan)

ApGrid Testbed – features - Truly multi national/political/institutional VO not an application-driven testbed differences in languages, culture, policy, interests, Donation (Contribution) based Not a single source funded for the development Each institution contributes his own share grass-roots approach We can have experiences on running international VO verify the feasibility of this approach for the testbed development

ApGrid Testbed – implementation - Use Globus Toolkit Ver.2 as a common software GSI based security infrastructure Build MDS tree ApGrid CAs ’ ApGrid allows multiple root CAs Trying to build trust-relationship between CAs ApGrid MDS ApGrid MDS is running on mds.apgrid.org planning to run more top-level MDS and cross- register resources

ApGrid Testbed: Status

Lessons Learned We have to pay much efforts for initiation Problems on installation of GT2/PBS/jobmanger Installation/configuration of GT2/PBS/jobmanager is still not so easy for application people. Most sites needed help for the installation. Software requirements depends on the application and middleware used by the application. In order to run GridRPC (Ninf-G) applications, I asked Open firewall/TCP Wrapper Additionally build Info SDK bundle with gcc32dbg Install Ninf-G change configuration of xinetd/inetd Enable NAT

Lessons Learned (cont ’ d) MDS is not scalable and still unstable Terrible performance GIIS lookup takes several ten seconds ~ minutes Some parameters in grid-info-slapd.conf such as sizelimit, timeout, cahcettl, etc., should be set to appropriate values depends on your environment (number of registered objects, network performance between GRISes and GIISes, etc.). Well known problem Well known problem Firewall, private IP addresses …

Lessons Learned (cont ’ d) Difficulties caused by the grass-roots approach. It is not easy to keep the GT2 version coherent between sites. Different requirements for the Globus Toolkit between users. Middleware developers needs the newest one. Application developers satisfy with using the stable (older) one. It is not easy to catch up frequent version up of the Globus Toolkit. CoG is a current problem 

Lessons Learned (cont ’ d) Difficulties caused by the grass-roots approach (cont ’ d) Most resources are not dedicated to the ApGrid Testbed. (though this is a common problem for Grids) There may be busy resources Need grid level scheduler, fancy Grid reservation system?

Lessons Learned (cont ’ d) Some resources are not stable example: If I call many RPCs, some of them fails (but sometimes all will done) not yet resolved GT2? Ninf-G? OS? Hardware? Other instability System maintenance (incl. version up of software) without notification realized when the application would fail. it worked well yesterday, but I ’ m not sure whether it works today But this is the Grid But this is the Grid

Relation to other international activities Contribution to APAN and PRAGMA APAN: Asia Pacific Advanced Network Network people + application people + Grid people Plan to reform ApGrid under APAN PRAGMA: Pacific-Rim Application and Grid Middleware Assembly PRAGMA is focusing on applications Provide ApGrid Testbed for their applications Activities at the GGF Production Grid Management RG Draft a Case Study Document (ApGrid Testbed) Groups in the Security Area CAOPs (Grid PMA) Discuss about the policy management Grid Federation RG (1 st BOF at GGF9) Discuss federation of Grid I ’ ll be a co-chair

Summary Difficulties are caused by not technical problems but sociological/political problems Each site has its own policy account management firewalls trusted CAs … Differences in interests / expertise Application, middleware, networking, etc. Differences in culture, language, etc. Human interaction is very important

Summary (cont ’ d) What has been done? Resource sharing between more than 10 sites (around 500cpus) Use GT2 as a common software Run Ninf-G applications What hasn ’ t? I could use, but it is difficult for others I was given an account at each site by personal communication Formalize “ how to use the Grid Testbed ” Provide documentation Define ApGrid Policy for international collaboration Keep the testbed stable Tools for management Browse information CA/Cert. management

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