1 / 12

Experiences with NMI at the University of Virginia

Experiences with NMI at the University of Virginia. NMI Integration Testbed: Experiences in Middleware Deployment Spring 2003 Internet2 Member Meeting Tuesday, April 8, 2003 Marty Humphrey Assistant Professor Computer Science Department University of Virginia.

candy
Download Presentation

Experiences with NMI at the University of Virginia

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Experiences with NMI at the University of Virginia NMI Integration Testbed: Experiences in Middleware Deployment Spring 2003 Internet2 Member Meeting Tuesday, April 8, 2003 Marty Humphrey Assistant Professor Computer Science Department University of Virginia

  2. UVa Campus-Wide Virtual Computer (CWVC, 1995) • Mentat  Legion (1995-2002) • Objectives • Cycle-scavenging • Convince University people of utility of Grids (“metasystems”) • Serve as testbed for national-scale Grid • Heterogeneity (e.g., Sun, Dec, HP, IBM, SGI) • Challenges • Technical (namespace, fault tolerance, scheduling, security) • Non-technical (“pain management”, accounting—sharing) • Legion  Avaki (2002)

  3. Our Experiences with Grids • Legion (1995 – 2002) • GGF • Steering Committee • Security Area Director • OGSA Sec co-director (with Raj Nagaratnam, IBM) • HPDC, SC Program Committees • NPACI • Other Grid efforts: DOE, DOD, NASA IPG • OGSI.NET • MyProxy (with Jim Basney, NCSA)

  4. Why did we get involved? • Facilitate quality-control on NMI software • It’s incredibly difficult! (e.g., Legion) • Grids on campus • As research infrastructure • Grids in the classroom • How do we teach middleware to undergrads/grads?

  5. Plan • Already using Globus/NWS/Condor-G in many research projects • Replace with NMI “productized versions” of Globus, Condor-G, NWS (“CHARMM portal”) • Investigate issues of integrating with Campus information infrastructure • UVa Campus CA • Campus LDAP server • (Re-Visit) Issues of UVa CWVC • Develop course materials for Grids

  6. Grid Applications for Scientists • Goal - easy access to grid resources for biologists performing protein folding • Biologists want • Access to distributed mass storage • Transparent remote execution • Security/authorization • Web-based job submission/steering tools • Solution: Generic grid tools with customized interfaces for scientific apps

  7. r Rgyr CHARMM Molecular Dynamics Simulations (Protein Folding) 100-200 structures to sample (r,Rgyr ) space

  8. .NET Unix Job Manager Web Service Job Monitor Job Monitor Globus Run Username / password https Input / output URIs Based on OGSI TP 4 DAG URI, Sink URI Poll request OGSI Notification Sink WS Start job, send URIs Status updates Fetch Cred MyProxy Server Retrieve DAG file GridFTP DAG file Input files SRB Archive Auditing Service DAGMan GridFTP Blue Horizon Centurion Protein Folding on the Grid Asynch. message delivery Retrieve credentials NATIONAL PARTNERSHIPFOR ADVANCED COMPUTATIONAL INFRASTRUCTURE

  9. Results / Lessons: Research Projects • Transition to NMI versions largely straightforward • Immediate upgrades not always necessary • Issues • NMI components are not entirely “out-of-the-box perfect” • NMI components, at this time, do not contain “full Grid picture”

  10. Results / Lessons: Integration with Campus Information • Integrating Grids with UVa standard assurance CA • Can end-user cert sign another cert? • UVa: PKCS#12; Globus: not • End-user issuing largely straightforward; acquiring “Service” certs still largely geared toward HTTPS (not Globus usage) • Create UVa Web page: “Installing NMI Grids at UVa” • Issues • Student privacy concerns not always consistent with Grid mechanisms • “Students of CS650 are allowed to execute jobs on grad11.cs.virginia.edu…” • Broader: mechanism alone will not “coerce” resource owners to share

  11. Results / Lessons: Course Material for Grids • Grad CS Class (CS650, F2002) briefly introduced Grids • In context of Web Services ( “Grid Services”) • Refining for future classes • F2003 CS650 • S2004 Senior-undergrad “Distributed Systems” • Issues • Principles vs. “current fad” • Is the learning curve too steep?

  12. Bottom Line • UVa sees NMI as opportunity to “take it to the next level” • General lessons on the use of NMI • Research projects: effective, but complex • Campus Grid: must want to share • In the classroom: principles vs. “current fad” • Very compelling progress in NMI program; more to come

More Related