Purdue Campus Grid

1. Purdue Campus Grid Preston Smith psmith@purdue.edu Condor Week 2006 April 24, 2006

2. Overview RCAC Community Clusters Grids at Purdue Campus Regional NWICG National OSG CMS Tier-2 NanoHUB Teragrid Future Work

3. Purdue�s RCAC Rosen Center for Advanced Computing Division of Information Technology at Purdue (ITaP) Wide variety of systems: shared memory and clusters 352 CPU IBM SP Five 24-processor Sun F6800s, Two 56-processor Sun E10ks Five Linux clusters ITaP, the central computing and telecommunications organization on Purdue�s WL campusITaP, the central computing and telecommunications organization on Purdue�s WL campus

4. Linux clusters in RCAC Recycled clusters Systems retired from student labs Nearly 1000 nodes of single-CPU PIII, P4, and 2-CPU Athlon MP and EM64T Xeons for general use by Purdue researchers

5. Community Clusters Federate resources at a low level Separate researchers buy sets of nodes to federate into larger clusters Enables larger clusters than a scientist could support on his own Leverage central staff and infrastructure No need to sacrifice a grad student to be a sysadmin!

6. Community Clusters

7. Community Clusters Primarily scheduled with PBS Contributing researchers are assigned a queue that can run as many �slots� as they have contributed. Condor co-schedules alongside PBS When PBS is not running a job, a node is fair game for Condor! But Condor work is subject to preemption if PBS assigns work to the node.

8. Condor on Community Clusters All in all, Condor joins together 4 clusters (~2500 CPU) within RCAC.

9. Grids at Purdue - Campus Instructional computing group manages a 1300-node Windows Condor pool to support instruction. Mostly used by computer graphics classes for rendering animations Maya, etc. Work in progress to connect Windows pool with RCAC pools. Future work: leverage Windows pools for science BLAST, perhaps?Future work: leverage Windows pools for science BLAST, perhaps?

10. Grids at Purdue - Campus Condor pools around campus Physics department: 100 nodes, flocked Envision Center: 48 nodes, flocked Potential collaborations Libraries: ~200 nodes on Windows terminals Colleges of Engineering: 400 nodes in existing pool Or any department interested in sharing cycles! Envision is GPU cluster Libraries joining RCAC pools this summer?Envision is GPU cluster Libraries joining RCAC pools this summer?

11. Grids at Purdue - Regional Northwest Indiana Computational Grid Purdue West Lafayette Purdue Calumet Notre Dame Argonne Labs Condor pools available to NWICG today. Partnership with OSG?

12. Open Science Grid Purdue active in Open Science Grid CMS Tier-2 Center NanoHUB OSG/Teragrid Interoperability Campus Condor pools accessible to OSG Condor used for access to extra, non-dedicated cycles for CMS and is becoming the preferred interface for non-CMS VOs.

13. CMS Tier-2 - Condor MC production from UW-HEP ran this spring on RCAC Condor pools. Processed 23% or so of entire production. High rates of preemption, but that�s expected! 2006 will see addition of dedicated Condor worker nodes to Tier-2, in addition to PBS clusters. Condor running on resilient dCache nodes. PBS work forcing Condor jobs to vacate Still got plenty of work donePBS work forcing Condor jobs to vacate Still got plenty of work done

14. NanoHUB NanoHUB: Science Gateway to the Grid for Nanotechnology community Teragrid Science Gateway project Open Science Grid VO Condor-C as resource broker for Condor-G submissions to Teragrid or OSG Working closely with Condor teamNanoHUB: Science Gateway to the Grid for Nanotechnology community Teragrid Science Gateway project Open Science Grid VO Condor-C as resource broker for Condor-G submissions to Teragrid or OSG Working closely with Condor team

15. Teragrid Teragrid Resource Provider Resources offered to Teragrid Lear cluster Condor pools Data collections

16. Teragrid Two current projects active in Condor pools via Teragrid allocations Database of Hypothetical Zeolite Structures CDF Electroweak MC Simulation Condor-G Glide-in Great exercise in OSG/TG Interoperability Identifying other potential users What�s a zeolite (materials science) User is not experienced with Condor But with help from RCAC science support staff, has processed 250,000 hours of work in two months.What�s a zeolite (materials science) User is not experienced with Condor But with help from RCAC science support staff, has processed 250,000 hours of work in two months.

17. Teragrid TeraDRE - Distributed Rendering on the Teragrid Globus, Condor, and IBRIX FusionFS enables Purdue�s Teragrid site to serve as a render farm Maya and other renderers available

18. Grid Interoperability Both OSG and Teragrid operate on the same resources For example, take �lear� Campus users can use it (both those who own parts of it, and Condor users who might run on it opportunistically) In the same way, so do OSG (CMS) users and non-CMS users via Condor Teragrid users with allocations on Lear get or the Purdue condor pools may run there as well.Both OSG and Teragrid operate on the same resources For example, take �lear� Campus users can use it (both those who own parts of it, and Condor users who might run on it opportunistically) In the same way, so do OSG (CMS) users and non-CMS users via Condor Teragrid users with allocations on Lear get or the Purdue condor pools may run there as well.

19. Grid Interoperability Tier-2 to Tier-2 connectivity via dedicated Teragrid WAN (UCSD->Purdue) Aggregating resources at low level makes interoperability easier! OSG stack available to TG users and vice versa �Bouncer� Globus job forwarder

20. Future of Condor at Purdue Add resources Continue growth around campus RCAC Other departments Add Condor capabilities to resources Teragrid data portal adding on-demand processing with Condor now Federation Aggregate Condor pools with other institutions? Rcac: Suns Dedicated Condor resources New departments: College of Technology BiologyRcac: Suns Dedicated Condor resources New departments: College of Technology Biology

21. Condor at Purdue Questions?

22. PBS/Condor Interaction

23. PBS/Condor Interaction PBS Epilogue /opt/condor/bin/condor_config_val -rset -startd \ PBSRunning=False > /dev/null /opt/condor/sbin/condor_reconfig -startd > /dev/null Condor START Expression in condor_config.local PBSRunning = False # Only start jobs if PBS is not currently running a job PURDUE_RCAC_START_NOPBS = ( $(PBSRunning) == False ) START = $(START) && $(PURDUE_RCAC_START_NOPBS)