Condor Project Computer Sciences Department University of Wisconsin-Madison A Scientist’s Introduction to Condor Barcelona, 2006

2 Agenda  Extended user’s tutorial  Advanced Uses of Condor Java programs DAGMan Stork MW Grid Computing  Case studies, and a discussion of your application‘s needs

3 Condor Job Universes Serial Jobs Vanilla Standard Grid Scheduler Local Java Parallel Jobs MPI PVM Parallel

4 Java assumptions  Java programs require a Java Virtual Machine (JVM)  Run time environment is specialized with respect to  libraries (class implementations)  I/O

5 Condor and Java  The Java universe identifies jobs such that Condor can set up the proper environment  Condor knows which machines have an installed JVM  Condor knows the location, version, and performance of the JVM on each machine  Condor understands about jar files  Provides more information about Java job completion than the JVM exit code  The program runs in a Java wrapper, allowing Condor to report Java exceptions

6 Java Universe Job Example Java Universe submit description file: Universe = java Executable = Main.class jar_files = MyLibrary.jar Input = infile Output = outfile Arguments = Main Queue

7 Java support % condor_status –java Name JavaVendor Ver State Actv LoadAv Mem abulafia.cs Sun Microsy 1.5.0_ Claimed Busy acme.cs.wis Sun Microsy 1.5.0_ Unclaimed Idle adelie01.cs Sun Microsy 1.5.0_ Claimed Busy adelie02.cs Sun Microsy 1.5.0_ Claimed Busy