Rochester Institute of Technology Job Submission Andrew Pangborn & Myles Maxfield 10/19/2015Service Oriented Cyberinfrastructure Lab,

The Grid ? 10/19/2015Service Oriented Cyberinfrastructure Lab,

The Problem At one end are computing resources managed by batch queuing systems and other middleware At the other end are end-users and their jobs/applications Need software and protocols for submitting jobs to the computing resources 10/19/2015Service Oriented Cyberinfrastructure Lab,

Job Submission More motivation stuff? 10/19/2015Service Oriented Cyberinfrastructure Lab,

Batch Queuing Systems Submitting a job directly to the batch queuing system One or more queues –Priorities Two common architectures –Client/server –Dynamic offloading User credential (delegation) Jobs have states (e.g. Pending, Running) 10/19/2015Service Oriented Cyberinfrastructure Lab,

Batch Queuing Systems Important examples: –Portable Batch System –TORQUE –Xgrid –Sun Grid Engine –Load Sharing Facility –Condor 10/19/2015Service Oriented Cyberinfrastructure Lab,

Portable Batch System (PBS) Originally developed for NASA Client/server architecture Server: pbs_server Client: pbs_mom Works with MPI with built-in shell script variables 10/19/2015Service Oriented Cyberinfrastructure Lab,

PBS Example cat test.sh #!/bin/sh #testpbs echo This is a test echo today is `date` echo This is `hostname` echo The current working directory is `pwd` ls -alF /home uptime 10/19/2015Service Oriented Cyberinfrastructure Lab,

PBS Example qsub test.sh 6.gras.carrion.rit.edu qstat Job id Name User Time Use S Queue gras test.sh litherum 00:00:00 C batch cat test.sh.o6 This is a test today is Sat Jan 17 18:20:20 EST 2009 This is carrion02 The current working directory is /home/litherum total 20 drwxr-xr-x 31 litherum litherum 4096 Jan 17 18:19 litherum/ 18:20:20 up 131 days, 21:20, 0 users, load average: 0.00, 0.00, /19/2015Service Oriented Cyberinfrastructure Lab,

Torque Built on top of PBS Supports reservations, where you can reserve specific resources for specific times. Supports partitions, where you can partition a cluster into smaller sub-clusters. 10/19/2015Service Oriented Cyberinfrastructure Lab,

Torque showq ACTIVE JOBS JOBNAME USERNAME STATE PROC REMAINING STARTTIME 0 Active Jobs 0 of 4 Processors Active (0.00%) 0 of 2 Nodes Active (0.00%) IDLE JOBS JOBNAME USERNAME STATE PROC WCLIMIT QUEUETIME 0 Idle Jobs BLOCKED JOBS JOBNAME USERNAME STATE PROC WCLIMIT QUEUETIME Total Jobs: 0 Active Jobs: 0 Idle Jobs: 0 Blocked Jobs: 0 10/19/2015Service Oriented Cyberinfrastructure Lab,

Xgrid Apple Essentially the same as Condor GUI! =) Client/server model 10/19/2015Service Oriented Cyberinfrastructure Lab,

Sun Grid Engine Open source, like everything new Sun puts out Supports –Reservations –Job dependencies, –Checkpointing –Multiple scheduling algorithms –Web interface Professional! 10/19/2015Service Oriented Cyberinfrastructure Lab,

Load Sharing Facility Used by GRAM, which we’ll talk about later 10/19/2015Service Oriented Cyberinfrastructure Lab,

Condor More about this later, but it implements its own scheduler 10/19/2015Service Oriented Cyberinfrastructure Lab,

Challenging! These queuing systems are hard to use There may be many systems employed in a given grid Wouldn’t it be nice if all this were unified in a single implementation? 10/19/2015Service Oriented Cyberinfrastructure Lab,

A tool for pooling and “scavenging” computing resources and distributing jobs Similar to a batch queuing system [2] –job management –scheduling policy –priority scheme –resource monitoring –resource management. Also focuses on high-throughput and “opportunistic computing” [2] 10/19/2015Service Oriented Cyberinfrastructure Lab, Condor image from:

Condor Universes [1] Standard Vanilla –Simpler, can run universal binaries (do not need to be “condor compiled”) –No support for partial execution or job relocation Others –PVM –MPI –Java 10/19/2015Service Oriented Cyberinfrastructure Lab,

Condor Submission File Example [1] #hello.sub #condor job file example Universe = Vanilla Executable = hello Output = hello.out Input = hello.in Error = hello.err Log = hello.log Queue 10/19/2015Service Oriented Cyberinfrastructure Lab,

Condor Commands condor_submit 10/19/2015Service Oriented Cyberinfrastructure Lab,

Condor Daemons On all condor deployed machines –Master –Startd –Schedd On the condor pool master –Collector –Negotiator 10/19/2015Service Oriented Cyberinfrastructure Lab,

GRAM [4] Globus Resource Allocation Manager (GRAM) –Resource allocation –Process creation –Monitoring –Management –Maps requests expressed in a Resource Specification Language (RSL) into commands to local schedulers and computers. 10/19/2015Service Oriented Cyberinfrastructure Lab,

GRAM Pluggable! Can’t make up their mind how to describe jobs Will submit jobs to: –Condor –LSF –PBS/Torque –??? Unified interface, identifier for which cluster/service to use 10/19/2015Service Oriented Cyberinfrastructure Lab,

GRAM Example globusrun-ws -submit -factory 44/wsrf/services/ManagedJobFactoryService -factory-type PBS -streaming -job-command /bin/ hostname Delegating user credentials...Done. Submitting job...Done. Job ID: uuid: e4f2-11dd-81df bb4e6 Termination time: 01/18/ :57 GMT Current job state: Pending Current job state: Active tg-c15 Current job state: CleanUp-Hold Current job state: CleanUp Current job state: Done Destroying job...Done. Cleaning up any delegated credentials...Done. 10/19/2015Service Oriented Cyberinfrastructure Lab,

Condor-G [4] Condor-G is a Globus-enabled version of the Condor scheduler. It uses Globus to handle inter-organizational problems like: –Security –Resource management for supercomputers, –Executable staging. The same Condor tools that access local resources are now able to use the Globus protocols to access resources at multiple sites. It communicates with these resources and transfers files to and from these resources using Globus mechanisms, such as: –GSI –GRAM protocol for job submission Condor-g can be used to submit jobs to systems managed by Globus. Globus tools can be used to submit jobs to systems managed by Condor 10/19/2015Service Oriented Cyberinfrastructure Lab,

Condor-G 10/19/2015Service Oriented Cyberinfrastructure Lab,

UNICORE 10/19/2015Service Oriented Cyberinfrastructure Lab,

Upperware Talk about motivation for upperware applications 10/19/2015Service Oriented Cyberinfrastructure Lab,

GridShell 10/19/2015Service Oriented Cyberinfrastructure Lab,

References Getting started with Condorhttp:// 2.Thain, D., Tannenbaum, T., & Livny, M. (2005). Distributed computing in practice: the Condor experience. 3. bmission.ppt – Jeremy Espenshade’s condor job submission presentationhttp://grid.rit.edu/seminar/lib/exe/fetch.php/users:jeremy_espenshade:condorjobsu bmission.ppt /19/2015Service Oriented Cyberinfrastructure Lab,