CMS Connect tutorial

Friday 17 Jun 2016, 10:00 → 15:00 US/Central

RaceTrack (WH7X) (FERMILAB)

Kenyi Paolo Hurtado Anampa (University of Notre Dame (US))

CMS Connect is a service designed to provide a Tier3-like environment for condor analysis jobs and enables users to submit to all resources available in the CMS Global Pool. It is a complementary service to CRAB 3:

• Use CRAB 3 for e.g  large scale datasets processing via cmsRun
• Use CMS Connect for user-defined scripts via condor for late-analysis non-cmsRun jobs like e.g: making histograms, plots, analyzing trees, etc.

For users, interacting with CMS Connect is similar to interacting with a private cluster or e.g the LPC CAF, the main difference is that jobs do not run on a local pool but are sent to Tier Resources available in the CMS Global Pool, hence it does not provide a shared-filesystem infrastructure or include your CERN/FNAL AFS Home area for example.

Requirements for this workshop:

• Please, make sure you have a valid CMS VO user certificate. Follow this guide if you don't.
• Register to CMS Connect: Registration Link
• Sign-up for this event

Topics in this tutorial include:

• HTCondor: Best Practices
  • Submission, file transfer, job matching and classAds, queue monitoring.
  • Troubleshooting tips.
  • CMSSW-related tips
    • Sandbox creation
    • Setting up the framework on the worker node
    • Transfering files via e.g XRootD, gfal-copy, etc.
• CMS Connect usage
  • Account creation, transferring proxy certificates 
  • Submitting to specific resources
  • Dashboard reporting
  • Stash

First Half of tutorial

Second half of Tutorial

10:00 → 10:25 Introduction to CMS Connect

What is CMS Connect?

Speaker: Kenyi Paolo Hurtado Anampa (University of Notre Dame (US))

Introduction.pdf

10:30 → 11:10 Introduction to HTCondor 1

How to run jobs with HTCondor and monitor it

Speaker: Kenyi Paolo Hurtado Anampa (University of Notre Dame (US))

HTCondor Part 1.pdf

11:20 → 12:00 Introduction to HTCondor 2

Specifying resources and matching requirements

Speaker: Kenyi Paolo Hurtado Anampa (University of Notre Dame (US))

HTCondor Part 2.pdf

12:00 → 13:00 Break for Lunch

13:00 → 13:20 CMSSW-related tips

Tips to consider while working with CMSSW and condor jobs

Speaker: Kenyi Paolo Hurtado Anampa (University of Notre Dame (US))

CMSSW_tips.pdf

13:30 → 15:00 CMS Connect

How to use CMS Connect

Speaker: Kenyi Paolo Hurtado Anampa (University of Notre Dame (US))

CMSConnect.pdf