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The UCLA Grid Portal - Campus Grids and the UC Grid

The UCLA Grid Portal - Campus Grids and the UC Grid. http://grid.ucla.edu. Joan Slottow and Prakashan Korambath Research Computing Technologies UCLA Academic Technology Services. UCLA Grid Architecture. Head node Cluster I. Credential mapped to local ID. Grid Appliance. Grid Portal.

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The UCLA Grid Portal - Campus Grids and the UC Grid

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  1. The UCLA Grid Portal - Campus Grids and the UC Grid http://grid.ucla.edu Joan Slottow and Prakashan Korambath Research Computing Technologies UCLA Academic Technology Services

  2. UCLA Grid Architecture Head node Cluster I Credential mapped to local ID Grid Appliance Grid Portal https Uniform browser based interface Head node Cluster II Credential mapped to local ID MyProxy Server Storage Server ION Visualization Server Grid Appliance

  3. Single Campus Architecture Campus Grid Portal and CA A C A C Campus MyProxy Server Campus Storage Server • Grid Portal accesses the storage server • via GridFTP. • No other access is provided. A = Grid Appliance C = Cluster and Cluster Head Node

  4. Multi-Campus Architecture for the UC UC Grid CA UC Register Service UC User Database UC MyProxy UC Portal Single CA is shared among all campuses A C UCLA Portal UCSB Portal A C C A Storage Server C A C C UCLA MyProxy Storage Server UCSB MyProxy A A UCI Portal Storage Server All appliances talk to both their campus portal and the UC portal UCI MyProxy

  5. Pools • Resource Pool: • Clusters contribute cycles to the resource pool • Clusters contribute applications to a resource pool: • TeraGrid cycles purchased by the campus can easily be shared. • Pool Users: • Every cluster user is also a pool user. • Many students and faculty members do not currently have login ids on any of the clusters. They can easily sign up to be pool-only users. • Each pool-only user is assigned a Storage Area. • Pool use hides all the details • Pool jobs • Target cluster selected by the UCLA Grid Portal. • Currently run applications only. • A similar sharing of resources and applications can be applied across the entire UC.

  6. User Types • 2 Types of users: • Cluster User: • Has a login ID on at least 1 cluster • Pool-Only User: • Does not have a login ID on any cluster • Both types of users have certificates/usernames to login to the Grid Portal

  7. User Types vs. Portals Portal Campus Portal UC Portal U s e r T y p e Pool-only User Can submit jobs to the campus pool Can submit jobs to the UC pool Best choice for those with access to clusters on different campuses -- can use all clusters, UC-wide, he/she can Access Can submit jobs to the UC pool Can use those clusters on campus he/she can access Can submit jobs to the campus pool Cluster User

  8. To Login to a Portal a User Needs: • A certificate • A gridsphere account on that Portal • Additionally: • A Cluster User must be added to the gridmap file on the appliance node of each of the clusters on which he/she has a login id • A pool-only user needs to be assigned a storage area on the Grid Portal’s Storage Server.

  9. Workflow -- For the UC Grid -- 1 User Requested username/password pending UC Grid CA UC Register Service UC MyProxy UC User Database All authentication is done at the campus level Unique? Sends a message to campus grid admin Campus Grid Portal Pool-only user Form requesting Proposed username Authentication Cluster user Sends a message to cluster admin Usernames are unique across the entire UC

  10. Workflow -- For the UC Grid -- 2 Requested username/password pending Campus Grid Admin UC Register Service UC User Database UC MyProxy UC Grid CA Creates and signs user certificate Creates gridsphere account at UC Portal Campus Grid Portal Authenticates Clicks Approve Pushes certificate to UC MyProxy Pushes certificate to campus MyProxy Sends request + Host Cert Creates GridSphere account (assigns storage area) Campus MyProxy UC Register Client

  11. Pool Job Submission • Submitting a pool job

  12. How Pools Work • Currently applications only • A cluster that contributes to the pool must create: • Guest login id • Certificate for Grid Portal • Put guest in the gridmap file • Mechanism that allocates resources for pool jobs is up to the cluster administrator

  13. Pool Job Submission On Storage Server or Originating Custer Database User Storage Area Portal Find the best cluster Update A Select a guest user C Generate guest user proxy Status Change ? Create a uniquely-named subdirectory Add Database entry for this job Guest User Storage Area Stage input files to target cluster Pending Active Done Error Target Cluster Job submitted via GRAM Job Service and the guest user proxy When notified by GRAM of a status change Update the database

  14. Pool Job Output

  15. Retrieving Pool Job Output Pool Job Output

  16. TeraGrid • UGP acts as a client to the TeraGrid. • Their Globus Toolkit nodes are open to all of their users. • They allowed us to get the CA Signing Policy and CA Certificate Public Key for each of their clusters. • It only goes one way. myproxy.ncsa.uiuc.edu UCLA Grid Portal Request for user proxy User Proxy Certificate User proxy certificate returned because UCLA Grid Portal can authenticate user proxy certificate DataStar at SDSC UCLA pool jobs currently can run on two TeraGrid clusters.

  17. Submitting Jobs to the TeraGrid Submitting a job to the TeraGrid

  18. Grid Development Environment and Ajax Technologies Ajax • Ajax -- Asynchronous JavaScript and XML • Create web applications that are more interactive • Only those parts of a page that change are updated GDE • Create project, import files, save project • Fully integrated editor interface • GDE-generated Makefile or use pre-existing user Makefile • Can for as many windows as you want. (Can be on different clusters) • Tested in IE, Safari, Firefox • Uses Zimbra Open AJAX Toolkit (BSD license) • Compilations submitted to instantaneous queues (must run on the cluster, not on the appliance)

  19. GDE Ajax Grid Development Environment GDE Project Directory

  20. Visualization

  21. Pools -- Now • Single Pool • Every campus cluster user is also a pool user. • Pool-only users can only submit to the pool • Any cluster can contribute cycles to the pool • It can choose which of its applications it will contribute to the pool • When a pool job is submitted, the Portal decides which cluster will run it.

  22. Futures -- Specialty Pools • Clusters can form Specialty Pools • A user must be approved by the pool admin to • A specialty pool includes a list of applications • Grid Portal databases for: pools and pool users

  23. Futures -- Specialty Pools UCLA UC UCLA UCI Matlab Amber Q-Chem Mathematica Mathematica Matlab Amber Q-Chem UCSB Mathematica * Amber Fluent Gromacs Jaguar * Vasp * * Mathematica Corsica Osiris baby b2 TeraGrid Joan is in the default pools Frank is in the default pools and the UCLA Physics Pool Gromacs Jaguar * Prakashan is in the default and chemistry pools * = CNSI

  24. Futures -- Redundancy and Failover This is a feature of MySQL which automatically mirrors the database on the slaves. MySQL Master Slave Portal Load Balancer . . Disk May be a shared file system RAID5 or just like an appliance LB Portal Load Balancer LB • Also called big IP • It could be Apache or it could be hardware • Farms out work to the portals MyProxy MyProxy RAID5

  25. Workflow for Cluster User -- Now -- Single Campus User Cluster Head node Apply Page Sends a message to cluster admin Sends a message To grid admin Approves and adds to the gridmap file SSH authentication Creates gridsphere account Sends a message To the user Request for password, create and sign certificate, push it to MyProxy

  26. Workflow for Pool-only User -- Now -- Single Campus User ISIS used at UCLA User authenticated if he/she belongs to the UCLA community Apply Page Sends a message To grid admin link Purse (on MyProxy Server) Creates gridsphere account and assigns storage area on storage server Sends a message To the user User can now log in

  27. Workflow -- Add a Cluster on Another Campus -- 1 User UC Grid CA UC Register Service UC User Database UC MyProxy Other Campus Grid Portal Main Page Username Authentication Sends a message to cluster admin Sends a message to other campus grid admin GridSphere account not required

  28. Workflow -- Add a cluster on Another Campus -- 2 UC User Database Other Campus Grid Admin UC Register Service UC MyProxy UC CA Pushes certificate to Other campus MyProxy Other Campus Grid Portal Authenticates Clicks Approve Sends request + Host Cert Creates GridSphere account Other Campus MyProxy UC Register Client

  29. Portal Decides Where the Job will Run Amber Job Submitted Clusters with Amber Requirements? Time, Number of nodes Can resources meet requirements? Current Load Queue Length Select one

  30. UCSB Batch Queue Prediction Algorithm UCSB Prediction Algorithm: Daniel Nurmi 75% of the jobs queued start in 317 seconds ~ 5 minutes 95% of the jobs queued start in 54,000 seconds ~1.5 hours Hoffman cluster Parallel Queue

  31. Futures -- Job Status and the UC Grid Portal Joan submits a job to: - UCLA C1 - UCI C1 - UC Pool From the UC Grid Portal UC Portal Jobs DB A C1 UCLA Portal A C2 Jobs DB C1 C2 A A Joan submits a job to: - UCLA C1 - UCLA C2 - UCLA pool From the UCLA Grid Portal UCI Portal Jobs DB

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