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First Week

Before the students start reading any papers, especially the Globus paper Gaurang or Karan spend 45 minutes with the students

  • giving a high level overview of the Grids.
  • explaining the various globus components
  • terminology of grid sites / grid site layout / submit hosts etc
  • security in grid. certificates etc

Workflow Papers to Read

Globus and Condor Papers to Read

Second Week

Papers to Read

  • "Scheduling Data-Intensive Workflows onto Storage-Constrained Distributed Resources" Arun Ramakrishnan, Gurmeet Singh, Henan Zhao, Ewa Deelman, Rizos Sakellariou, Karan Vahi, Kent Blackburn , David Meyers and Michael Samidi. Seventh IEEE International Symposium on Cluster Computing and the Grid - CCGrid 2007
  • [ "Managing Large-Scale Scientific Workflows in Distributed Environments: Experiences and Challenges"|] Ewa Deelman, Yolanda Gil. Workflows in e-Science, e-Science 2006, Amsterdam, December 4-6, 2006

Setting up of credentials

  • Help the students set up their ssh keys so that they can log on to ISI machines from their laptops/ home computers

    Setting up of SSH Keys on ISI Linux boxes

  • log on to your linux box using action provided username and password
  • cd bin
  • Create the following symbolic links
    • ln -s /usr/bin/scp scp
    • ln -s /usr/bin/ssh-add ssh-add
    • ln -s /usr/bin/ssh-agent ssh-agent
    • ln -s /usr/bin/ssh-keygen ssh-keygen
    • ln -s /usr/bin/ssh-keyscan ssh-keyscan
  • Create your private keys
    • mkdir ~/.ssh
    • ssh-keygen -t dsa -C "user isi key" -b 2048 -f ~/.ssh/isi_dsa_2048
      Enter passphrase (empty for no passphrase): 
      Enter same passphrase again: 
      Your identification has been saved in /nfs/asd2/username/.ssh/id_dsa_2048.
      Your public key has been saved in /nfs/asd2/username/.ssh/
      The key fingerprint is:
      14:f9:31:1a:2d:e0:11:86:cd:3a:3d:9f:35:73:24:8c user isi key
      93.340u 0.070s 4:55.37 31.6%    0+0k 0+0io 363pf+0w
      Make sure that you enter a passphrase
  • Now you have a private key/public key pair generated.
  • Setup of account to use the generated ssh key to log on to other isi machines from your linux box
    • Machines running SSH Secure Server
      • cd ~/.ssh
      • ln -s id_dsa_2048 id_dsa
      • cat > authorized_keys2
      • ssh
      • It should ask for your passphrase key
    • Machines running Open SSH Server
      • mkdir ~/.ssh2
      • cd ~/.ssh2
      • ssh-keygen -e -f ~/.ssh/ >
      • create a text file named authorization with following content (use emacs or vi )
      • ssh
      • It should ask for your passphrase key

Help students to get grid certificates

Pegasus Tutorial

  • Gaurang or Karan spend half day with the new student to do a hands on pegasus tutorial
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