22 nd September 2003 JIM for CDF 1 JIM and SAMGrid for CDF Mòrag Burgon-Lyon University of Glasgow

2222ndnd September 2003 September 2003 JIM for CDFJIM for CDF 1

JIM and JIM and SAMGrid for SAMGrid for

CDFCDF

Mòrag Burgon-LyonMòrag Burgon-Lyon University of GlasgowUniversity of Glasgow


ContentsContents

• What is JIM?

• What is SAMGrid?

• How does JIM relate to SAMGrid?

• How does JIM work?

• Using JIM

• What will JIM do once complete?

• Deployment Plan


What is What is JIMJIM??

Job Management Infrastructure and Information Management

• Job Management Infrastructure is the framework allowing job submissions for execution on a cluster that has enough resources to complete the job.

• Information Management is knowing what resources are available for use.


What is SAMGrid?What is SAMGrid?

• SAMGrid is a grid infrastructure whose goal is to allow globally distributed computing for current experiments, CDF and DØ.

• Minos is strongly considering SAM

• Communicating with LHC experiments CMS (Fermilab) and Atlas (Brookhaven)


How does JIM relate to SAMGrid?How does JIM relate to SAMGrid?

Complements Sequencial Access via Metadata to provide complete grid services

Job ManagementInformation

and Monitoring

Data Handling





• JIM allows a user to submit jobs to SAMGrid and to access the output files on completion.

• JIM chooses which resources will be used to execute a job. This decision is based on the nearest location of the required data files.

• SAM executes the submitted job on the chosen cluster providing the I/O data management for the files.


How does JIM relate to SAMGridHow does JIM relate to SAMGrid

• Condor MMS was expanded for SAMGrid– Broker can query SAM station to see how much

data is already present.

• Globus toolkit is used for job transfer and monitoring


How does JIM work?How does JIM work?

JOB

Computing Element

Submission Client

User Interface

QueuingSystem

User Interface

User Interface

Broker

Match Making Service

Information Collector

Execution Site #1

Submission Client

Submission Client



Computing Element

Grid Sensors

Execution Site #n

Queuing System

Queuing System

Grid Sensors

Storage Element

Storage Element

Computing Element

Storage Element

Data Handling System


Storage Element

Storage Element

Storage Element

Storage Element



Grid Sensor

s

Grid Sensor

s

Grid Sensor

s

Grid Sensor

s

Computing Element

Computing Element






How does JIM work?How does JIM work?

• Distinguishes grid level (global) scheduling (selection of a cluster to run) from local scheduling (distribution of the job within the cluster).

• Distinguishes structured jobs (where the details are known to Grid middleware) from unstructured jobs (where the whole job is mapped onto a single cluster).


Using JIM – Submitting a jobUsing JIM – Submitting a job

User creates a jdl file such as the example shown:

sam_dataset = jpmm08-1fileexecutable = retrieve.shinput_sandbox = /home_scotgrid/m/mlyon/test/testjobcpu-per-event = 1sjob_manager = samjob_type = sam_analysissam_universe = prdsam_experiment = cdflog = testjob.logoutput = testjob.outerror = testjob.errarguments = Download Output Yet?group = testinstances = 1


Using JIM – Submitting a jobUsing JIM – Submitting a job

• The job is submitted by typing:

samg submit testjobfile.jdf• The progress of the job can be viewed by selecting

the submission site from the list:

http://samgrid.fnal.gov:8080• Select the job from the list. Details of the job state

are displayed• Once the job has been completed the output may

be downloaded

http://samgrid.fnal.gov:8080/list_of_schedulers.php


Using JIM – Viewing MapUsing JIM – Viewing Map


Using JIM – Viewing submission sitesUsing JIM – Viewing submission sites


Using JIM – Viewing submitted jobsUsing JIM – Viewing submitted jobs


Using JIM – Downloading outputUsing JIM – Downloading output


What will JIM do once complete?What will JIM do once complete?

• Current functionality allows job submission and retrieval

• Next steps:– Making the web-download secure– User support and defect fixing through testing phase– Roll out of SAMGrid to all CDF sites with available

resources– Add more brokering criteria

• Directors review of Run II computing has recommended the expansion of SAM to be a lab-wide product


Deployment PlanDeployment Plan

Two plans running in parallel:• Testing JIM with non-trivial submissions:

– Large Monte Carlo Simulation– Reconstruction– Analysis

• JIM software installations:– Glasgow ScotGrid IBM and CDFG Dell cluster– Oxford Dell cluster– Liverpool Dell cluster– UCL Dell cluster– Wisconsin

In progress

CompletePlanned for October


Deployment PlanDeployment Plan

• Glasgow University has a complete installation of SAMGrid on both ScotGrid and the CDF cluster. This installation is being tested with Monte Carlo simulation.

• Oxford University will be installed in the first week of October.

• Other UK institutions and Wisconsin to follow


CreditsCredits

• Thanks to Gabriele Garzoglio and the JIM team at Fermilab for providing material for this presentation.

Documents

22 nd September 2003 JIM for CDF 1 JIM and SAMGrid for CDF Mòrag Burgon-Lyon University of Glasgow